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Added/Updated functional\replication\test_shutdown_during_applying_segments_leads_to_crash.py. Checked on 5.0.0.623, 4.0.1.2692 - both on Windows and Linux. On linux test atually silently FAILS, without showing any error. Will be investigated later.
This commit is contained in:
zotov
parent
13531d503f
commit
fee7925d47
@ -8,486 +8,453 @@ DESCRIPTION:
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Bug initially was found during heavy test of replication performed by OLTP-EMUL, for FB 4.x
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(see letters to dimitr 13.09.2021; reply from dimitr, 18.09.2021 08:42 - all in mailbox: pz at ibase.ru).
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It *can* be reproduced without heavy/concurrent workload, but we have to operate with data that are written
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into database 'slowly'. Such data can be wide INDEXED column which has GUID-based values.
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It *can* be reproduced without heavy/concurrent workload, but one need to make data be written into replica
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database 'slowly'. First of all, we have to set/change (temporary) Forced Writes = _ON_ for replica DB.
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Further, on master DB we can create table with wide INDEXED column and insert GUID-based values there.
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On master we have FW = OFF thus data will be inserted quickly, but on applying of segments to replica DB
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will be extremely slow (more than 1..2 minutes).
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Test creates a table with 'wide' indexed field and adds data to it.
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Then we save current timestamp (with accuracy up to SECONDS, i.e. cut off milli- or microseconds) to variable.
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After this we start check replicationb.log for appearance of phrase 'Added <N> segment(s) to the processing queue'.
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After founding each such phrase we skip two lines above and parse timestamp when this occurred.
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If timestamp in log less than saved timestamp of our DML action then we go on to the next such phrase.
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Otherwise we can assume that replication BEGINS to apply just generated segment.
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At this point we save current timestamp and start to check replicationb.log for appearance of phrase
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'Added <N> segment(s) to the processing queue' - with requirement that this phrase has timestamp newer
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than just saved one (essentually, we are looking for LAST such phrase).
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See function wait_for_add_queue_in_replica() which does this parsing of replication.log.
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Because we operate with table which have very 'wide' index and, moreover, data in this index are GUID-generated
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text strings, we can safely assume that applying of segment will take at least 5...10 seconds (actually this
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can take done for 30...35 seconds).
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Since that point control is returned from func wait_for_add_queue_in_replica() to main code.
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We can be sure that replicating of segments will be performed very slow. In order to check ticket issue,
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we can now change replica DB to shutdown - and FB must not chash at this point.
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During this time we change replica mode to full shutdown and (immediately after that) return to online.
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NO message like 'error reading / writing from/to connection' must appear at this step.
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We also have to return FW state to 'OFF', so before shutting down this DB we change it FW attribute
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(see 'srv.database.set_write_mode(...)').
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NOTE: changing FW attribute causes error on 5.0.0.215 with messages:
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335544344 : I/O error during "WriteFile" operation for file "<db_repl_file.fdb>"
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335544737 : Error while trying to write to file
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- so we have to enclose it into try/except block (otherwise we will not see crash because of test terminating).
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After this, we have to wait for replica finish applying segment and when this occur we drop the table.
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When we further change DB replica state to full shutdown, FB 5.0.0.215 crashes (checked both of SS and CS).
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After returning DB to online ('srv.database.bring_online'), we will wait for all segments will be applied.
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If this occurs then we can conclude that test passes.
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Finally, we extract metadata for master and replica and compare them (see 'f_meta_diff').
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The only difference in metadata must be 'CREATE DATABASE' statement with different DB names - we suppress it,
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thus metadata difference must not be issued.
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################
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### N O T E ###
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################
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Test assumes that master and replica DB have been created beforehand.
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Also, it assumes that %FB_HOME%/replication.conf has been prepared with apropriate parameters for replication.
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Particularly, name of directories and databases must have info about checked FB major version and ServerMode.
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* verbose = true // in order to find out line with message that required segment was replicated
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* section for master database with specified parameters:
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journal_directory = "!fbt_repo!/tmp/fb-replication.!fb_major!.!server_mode!.journal"
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journal_archive_directory = "!fbt_repo!/tmp/fb-replication.!fb_major!.!server_mode!.archive"
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journal_archive_command = "copy $(pathname) $(archivepathname)"
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journal_archive_timeout = 10
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* section for replica database with specified parameter:
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journal_source_directory = "!fbt_repo!/tmp/fb-replication.!fb_major!.!server_mode!.archive"
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Master and replica databases must be created in "!fbt_repo! mp" directory and have names like these:
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'fbt-main.fb40.SS.fdb'; 'fbt-repl.fb40.SS.fdb'; - for FB 4.x ('SS' = Super; 'CS' = Classic)
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'fbt-main.fb50.SS.fdb'; 'fbt-repl.fb50.SS.fdb'; - for FB 5.x ('SS' = Super; 'CS' = Classic)
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NB: fixed numeric value ('40' or '50') must be used for any minor FB version (4.0; 4.0.1; 4.1; 5.0; 5.1 etc)
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Confirmed bug on 5.0.0.215: server crashed when segment was applied to replica and at the same time we issued
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'gfix -shut full -force 0 ...'. Regardless of that command, replica DB remained in NORMAL mode, not in shutdown.
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If this command was issued after this again - FB process hanged (gfix could not return control to OS).
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This is the same bug as described in the ticked (discussed with dimitr, letters 22.09.2021).
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These two databases must NOT be dropped in any of tests related to replication!
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They are created and dropped in the batch scenario which prepares FB instance to be checked for each ServerMode
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and make cleanup after it, i.e. when all tests will be completed.
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NB. Currently this task was implemented only in Windows batch, thus test has attribute platform = 'Windows'.
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Temporary comment. For debug purpoces:
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1) find out SUFFIX of the name of FB service which is to be tested (e.g. 'DefaultInstance', '40SS' etc);
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2) copy file %fbt-repo%/tests/functional/tabloid/batches/setup-fb-for-replication.bat.txt
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to some place and rename it "*.bat";
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3) open this .bat in editor and asjust value of 'fbt_repo' variable;
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4) run: setup-fb-for-replication.bat [SUFFIX_OF_FB_SERVICE]
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where SUFFIX_OF_FB_SERVICE is ending part of FB service which you want to check:
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DefaultInstance ; 40ss ; 40cs ; 50ss ; 50cs etc
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5) batch 'setup-fb-for-replication.bat' will:
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* stop selected FB instance
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* create test databases (in !fbt_repo!/tmp);
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* prepare journal/archive sub-folders for replication (also in !fbt_repo!/tmp);
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* replace %fb_home%/replication.conf with apropriate
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* start selected FB instance
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6) run this test (FB instance will be already launched by setup-fb-for-replication.bat):
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%fpt_repo%/fbt-run2.bat dblevel-triggers-must-not-fire-on-replica.fbt 50ss, etc
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Confirmed bug on 5.0.0.215: server crashed when segment was applied to replica and at the same time we issued
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'gfix -shut full -force 0 ...'. Regardless of that command, replica DB remained in NORMAL mode, not in shutdown.
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If this command was issued after this again - FB process hanged (gfix could not return control to OS).
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This is the same bug as described in the ticked (discussed with dimitr, letters 22.09.2021).
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Checked on: 4.0.1.2613 (SS/CS); 5.0.0.219 (SS/CS)
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FBTEST: tests.functional.replication.shutdown_during_applying_segments_leads_to_crash
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NOTES:
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[27.08.2022] pzotov
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1. In case of any errors (somewhat_failed <> 0) test will re-create db_main and db_repl, and then perform all needed
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actions to resume replication (set 'replica' flag on db_repl, enabling publishing in db_main, remove all files
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from subdirectories <repl_journal> and <repl_archive> which must present in the same folder as <db_main>).
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2. Warning raises on Windows and Linux:
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../../../usr/local/lib/python3.9/site-packages/_pytest/config/__init__.py:1126
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/usr/local/lib/python3.9/site-packages/_pytest/config/__init__.py:1126:
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PytestAssertRewriteWarning: Module already imported so cannot be rewritten: __editable___firebird_qa_0_17_0_finder
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self._mark_plugins_for_rewrite(hook)
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The reason currently is unknown.
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3. Following message appears in the firebird.log during this test:
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3.1.[WINDOWS]
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I/O error during "WriteFile" operation for file "<db_replica_filename>"
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Error while trying to write to file
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3.2 [LINUX]
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I/O error during "write" operation for file "<db_replica_filename>"
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Error while trying to write to file
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Success
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4. ### ACHTUNG ###
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On linux test atually "silently" FAILS, without showing any error (but FB process is terminated!).
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Will be investigated later.
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Checked on 5.0.0.691, 4.0.1.2692 - both CS and SS. Both on Windows and Linux.
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"""
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import os
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import shutil
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import re
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from difflib import unified_diff
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from pathlib import Path
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import time
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from datetime import datetime
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from datetime import timedelta
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import pytest
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from firebird.qa import *
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from firebird.driver import connect, create_database, DbWriteMode, ReplicaMode, ShutdownMode,ShutdownMethod, OnlineMode
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from firebird.driver.types import DatabaseError
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# QA_GLOBALS -- dict, is defined in qa/plugin.py, obtain settings
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# from act.files_dir/'test_config.ini':
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repl_settings = QA_GLOBALS['replication']
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MAX_TIME_FOR_WAIT_SEGMENT_IN_LOG = int(repl_settings['max_time_for_wait_segment_in_log'])
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MAX_TIME_FOR_WAIT_ADDED_TO_QUEUE = int(repl_settings['max_time_for_wait_added_to_queue'])
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MAIN_DB_ALIAS = repl_settings['main_db_alias']
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REPL_DB_ALIAS = repl_settings['repl_db_alias']
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db_main = db_factory( filename = '#' + MAIN_DB_ALIAS, do_not_create = True, do_not_drop = True)
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db_repl = db_factory( filename = '#' + REPL_DB_ALIAS, do_not_create = True, do_not_drop = True)
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substitutions = [('Start removing objects in:.*', 'Start removing objects'),
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('Finish. Total objects removed: [1-9]\\d*', 'Finish. Total objects removed'),
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('.* CREATE DATABASE .*', ''), ('FMT_DESCR .*', 'FMT_DESCR'), ('[ \t]+', ' ')]
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('.* CREATE DATABASE .*', ''),
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('[\t ]+', ' '),
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('FOUND message about replicated segment N .*', 'FOUND message about replicated segment'),
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('FOUND message about segments added to queue after timestamp .*', 'FOUND message about segments added to queue after timestamp')
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]
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db = db_factory()
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act_db_main = python_act('db_main', substitutions=substitutions)
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act_db_repl = python_act('db_repl', substitutions=substitutions)
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act = python_act('db', substitutions=substitutions)
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#--------------------------------------------
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expected_stdout = """
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POINT-A FOUND message about segments added to queue after given timestamp.
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POINT-B Attributes force write, full shutdown, read-only replica
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POINT-1 FOUND message about replicated segment.
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Start removing objects
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Finish. Total objects removed
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POINT-2 FOUND message about replicated segment.
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"""
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def cleanup_folder(p):
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# Removed all files and subdirs in the folder <p>
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# Used for cleanup <repl_journal> and <repl_archive> when replication must be reset
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# in case when any error occurred during test execution.
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assert os.path.dirname(p) != p, f"@@@ ABEND @@@ CAN NOT operate in the file system root directory. Check your code!"
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for root, dirs, files in os.walk(p):
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for f in files:
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os.unlink(os.path.join(root, f))
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for d in dirs:
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shutil.rmtree(os.path.join(root, d))
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return len(os.listdir(p))
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#--------------------------------------------
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def wait_for_add_queue_in_replica( act_db_main: Action, max_allowed_time_for_wait, min_timestamp, prefix_msg = '' ):
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# <hostname> (replica) Tue Sep 21 20:24:57 2021
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# Database: ...
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# Added 3 segment(s) to the processing queue
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# -:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-
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def check_pattern_in_log( log_lines, pattern, min_timestamp, prefix_msg = '' ):
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found_required_message = False
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for i,r in enumerate(log_lines):
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if pattern.search(r):
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if i>=2 and log_lines[i-2]:
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# a = r.replace('(',' ').split()
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a = log_lines[i-2].split()
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if len(a)>=4:
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# s='replica_host_name (slave) Sun May 30 17:46:43 2021'
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# s.split()[-5:] ==> ['Sun', 'May', '30', '17:46:43', '2021']
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# ' '.join( ...) ==> 'Sun May 30 17:46:43 2021'
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dts = ' '.join( log_lines[i-2].split()[-5:] )
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segment_timestamp = datetime.strptime( dts, '%a %b %d %H:%M:%S %Y')
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if segment_timestamp >= min_timestamp:
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print( (prefix_msg + ' ' if prefix_msg else '') + f'FOUND message about segments added to queue after timestamp {min_timestamp}: {segment_timestamp}')
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found_required_message = True
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break
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return found_required_message
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# -:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-
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replication_log = act_db_main.home_dir / 'replication.log'
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replold_lines = []
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with open(replication_log, 'r') as f:
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replold_lines = f.readlines()
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# VERBOSE: Added 5 segment(s) to the processing queue
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segments_to_queue_pattern=re.compile( 'VERBOSE:\\s+added\\s+\\d+\\s+segment.*to.*queue', re.IGNORECASE)
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# 08.09.2021: replication content can already contain phrase which we are looking for.
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# Because of this, it is crucial to check OLD content of replication log before loop.
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# Also, segments_to_queue_pattern must NOT start from '\\+' because it can occur only for diff_data (within loop):
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#
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found_required_message = check_pattern_in_log( replold_lines, segments_to_queue_pattern, min_timestamp, prefix_msg )
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if not found_required_message:
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for i in range(0,max_allowed_time_for_wait):
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time.sleep(1)
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# Get content of fb_home replication.log _after_ isql finish:
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with open(replication_log, 'r') as f:
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diff_data = unified_diff(
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replold_lines,
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f.readlines()
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)
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found_required_message = check_pattern_in_log( list(diff_data), segments_to_queue_pattern, min_timestamp, prefix_msg )
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if found_required_message:
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break
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if not found_required_message:
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print(f'UNEXPECTED RESULT: no message about segments added to queue after {min_timestamp}.')
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#--------------------------------------------
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def wait_for_data_in_replica( act_db_main: Action, max_allowed_time_for_wait, prefix_msg = '' ):
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replication_log = act_db_main.home_dir / 'replication.log'
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replold_lines = []
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with open(replication_log, 'r') as f:
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replold_lines = f.readlines()
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with act_db_main.db.connect(no_db_triggers = True) as con:
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with con.cursor() as cur:
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cur.execute("select rdb$get_context('SYSTEM','REPLICATION_SEQUENCE') from rdb$database")
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last_generated_repl_segment = cur.fetchone()[0]
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# VERBOSE: Segment 1 (2582 bytes) is replicated in 1 second(s), deleting the file
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# VERBOSE: Segment 2 (200 bytes) is replicated in 82 ms, deleting the file
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p_successfully_replicated = re.compile( f'\\+\\s+verbose:\\s+segment\\s+{last_generated_repl_segment}\\s+\\(\\d+\\s+bytes\\)\\s+is\\s+replicated.*deleting', re.IGNORECASE)
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# VERBOSE: Segment 16 replication failure at offset 33628
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p_replication_failure = re.compile('segment\\s+\\d+\\s+replication\\s+failure', re.IGNORECASE)
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found_required_message = False
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found_replfail_message = False
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found_common_error_msg = False
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for i in range(0,max_allowed_time_for_wait):
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time.sleep(1)
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# Get content of fb_home replication.log _after_ isql finish:
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with open(replication_log, 'r') as f:
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diff_data = unified_diff(
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replold_lines,
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f.readlines()
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)
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for k,d in enumerate(diff_data):
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if p_successfully_replicated.search(d):
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# We FOUND phrase "VERBOSE: Segment <last_generated_repl_segment> ... is replicated ..." in the replication log.
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# This is expected success, break!
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print( (prefix_msg + ' ' if prefix_msg else '') + f'FOUND message about replicated segment N {last_generated_repl_segment}.' )
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found_required_message = True
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break
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if p_replication_failure.search(d):
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print( (prefix_msg + ' ' if prefix_msg else '') + '@@@ SEGMENT REPLICATION FAILURE @@@ ' + d )
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found_replfail_message = True
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break
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if 'ERROR:' in d:
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print( (prefix_msg + ' ' if prefix_msg else '') + '@@@ REPLICATION ERROR @@@ ' + d )
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found_common_error_msg = True
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break
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if found_required_message or found_replfail_message or found_common_error_msg:
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break
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if not found_required_message:
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print(f'UNEXPECTED RESULT: no message about replicating segment N {last_generated_repl_segment} for {max_allowed_time_for_wait} seconds.')
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#--------------------------------------------
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@pytest.mark.skip('FIXME: Not IMPLEMENTED')
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@pytest.mark.version('>=4.0.1')
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@pytest.mark.platform('Windows')
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def test_1(act: Action):
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pytest.fail("Not IMPLEMENTED")
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def test_1(act_db_main: Action, act_db_repl: Action, capsys):
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# test_script_1
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#---
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#
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# import os
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# import subprocess
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# import re
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# import difflib
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# import shutil
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# import time
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# from datetime import datetime
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# from datetime import timedelta
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#
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#
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# os.environ["ISC_USER"] = user_name
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# os.environ["ISC_PASSWORD"] = user_password
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#
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# # NB: with default values of 'apply_idle_timeout' and 'apply_error_timeout' (10 and 60 s)
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# # total time of this test is about 130...132s.
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# #####################################
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# MAX_TIME_FOR_WAIT_SEGMENT_IN_LOG = 135
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# MAX_TIME_FOR_WAIT_ADDED_TO_QUEUE = 135
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# #####################################
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#
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# svc = fdb.services.connect(host='localhost', user=user_name, password=user_password)
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# FB_HOME = svc.get_home_directory()
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# svc.close()
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#
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# engine = db_conn.engine_version # 4.0; 4.1; 5.0 etc -- type float
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# fb_major = 'fb' + str(engine)[:1] + '0' # 'fb40'; 'fb50'
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#
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# cur = db_conn.cursor()
|
||||
# cur.execute("select rdb$config_value from rdb$config where upper(rdb$config_name) = upper('ServerMode')")
|
||||
# server_mode = 'XX'
|
||||
# for r in cur:
|
||||
# if r[0] == 'Super':
|
||||
# server_mode = 'SS'
|
||||
# elif r[0] == 'SuperClassic':
|
||||
# server_mode = 'SC'
|
||||
# elif r[0] == 'Classic':
|
||||
# server_mode = 'CS'
|
||||
# cur.close()
|
||||
#
|
||||
# # 'fbt-main.fb50.ss.fdb' etc:
|
||||
# db_main = os.path.join( context['temp_directory'], 'fbt-main.' + fb_major + '.' + server_mode + '.fdb' )
|
||||
# db_repl = db_main.replace( 'fbt-main.', 'fbt-repl.')
|
||||
#
|
||||
# # Folders for journalling and archieving segments.
|
||||
# repl_journal_dir = os.path.join( context['temp_directory'], 'fb-replication.' + fb_major + '.' + server_mode + '.journal' )
|
||||
# repl_archive_dir = os.path.join( context['temp_directory'], 'fb-replication.' + fb_major + '.' + server_mode + '.archive' )
|
||||
#
|
||||
# runProgram('gfix', ['-w', 'async', 'localhost:' + db_main])
|
||||
#
|
||||
# db_conn.close()
|
||||
#
|
||||
# #--------------------------------------------
|
||||
#
|
||||
# def flush_and_close( file_handle ):
|
||||
# # https://docs.python.org/2/library/os.html#os.fsync
|
||||
# # If you're starting with a Python file object f,
|
||||
# # first do f.flush(), and
|
||||
# # then do os.fsync(f.fileno()), to ensure that all internal buffers associated with f are written to disk.
|
||||
# global os
|
||||
#
|
||||
# file_handle.flush()
|
||||
# if file_handle.mode not in ('r', 'rb') and file_handle.name != os.devnull:
|
||||
# # otherwise: "OSError: [Errno 9] Bad file descriptor"!
|
||||
# os.fsync(file_handle.fileno())
|
||||
# file_handle.close()
|
||||
#
|
||||
# #--------------------------------------------
|
||||
#
|
||||
# def cleanup( f_names_list ):
|
||||
# global os
|
||||
# for i in range(len( f_names_list )):
|
||||
# if type(f_names_list[i]) == file:
|
||||
# del_name = f_names_list[i].name
|
||||
# elif type(f_names_list[i]) == str:
|
||||
# del_name = f_names_list[i]
|
||||
# else:
|
||||
# print('Unrecognized type of element:', f_names_list[i], ' - can not be treated as file.')
|
||||
# del_name = None
|
||||
#
|
||||
# if del_name and os.path.isfile( del_name ):
|
||||
# os.remove( del_name )
|
||||
#
|
||||
# #--------------------------------------------
|
||||
#
|
||||
# def wait_for_data_in_replica( fb_home, max_allowed_time_for_wait, db_main, prefix_msg = '' ):
|
||||
# global re
|
||||
# global difflib
|
||||
# global time
|
||||
#
|
||||
# # -:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-
|
||||
# def check_pattern_in_log( log_lines, pattern, prefix_msg = '' ):
|
||||
# found_required_message = False
|
||||
# for d in log_lines:
|
||||
# if pattern.search(d):
|
||||
# print( (prefix_msg + ' ' if prefix_msg else '') + 'FOUND message about replicated segment.' )
|
||||
# found_required_message = True
|
||||
# break
|
||||
# return found_required_message
|
||||
# # -:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-
|
||||
#
|
||||
# replold_lines = []
|
||||
# with open( os.path.join(fb_home,'replication.log'), 'r') as f:
|
||||
# replold_lines = f.readlines()
|
||||
#
|
||||
# con = fdb.connect( dsn = 'localhost:' + db_main, no_db_triggers = 1)
|
||||
# cur = con.cursor()
|
||||
# cur.execute("select rdb$get_context('SYSTEM','REPLICATION_SEQUENCE') from rdb$database")
|
||||
# for r in cur:
|
||||
# last_generated_repl_segment = r[0]
|
||||
# cur.close()
|
||||
# con.close()
|
||||
#
|
||||
# # VERBOSE: Segment 1 (2582 bytes) is replicated in 1 second(s), deleting the file
|
||||
# segment_replicated_pattern=re.compile( 'verbose:\\s+segment\\s+%(last_generated_repl_segment)s\\s+\\(\\d+\\s+bytes\\)\\s+is\\s+replicated.*deleting' % locals(), re.IGNORECASE)
|
||||
#
|
||||
# # 08.09.2021: replication content can remain unchanged if there was no user-defined object in DB that must be dropped!
|
||||
# # Because of this, it is crucial to check OLD content of replication log before loop.
|
||||
# # Also, segment_replicated_pattern must NOT start from '\\+' because it can occur only for diff_data (within loop):
|
||||
# #
|
||||
# found_required_message = check_pattern_in_log( replold_lines, segment_replicated_pattern, prefix_msg )
|
||||
#
|
||||
# if not found_required_message:
|
||||
#
|
||||
# for i in range(0,max_allowed_time_for_wait):
|
||||
# time.sleep(1)
|
||||
#
|
||||
# # Get content of fb_home replication.log _after_ isql finish:
|
||||
# f_repllog_new = open( os.path.join(fb_home,'replication.log'), 'r')
|
||||
# diff_data = difflib.unified_diff(
|
||||
# replold_lines,
|
||||
# f_repllog_new.readlines()
|
||||
# )
|
||||
# f_repllog_new.close()
|
||||
#
|
||||
# found_required_message = check_pattern_in_log( diff_data, segment_replicated_pattern, prefix_msg )
|
||||
# if found_required_message:
|
||||
# break
|
||||
#
|
||||
# if not found_required_message:
|
||||
# print('UNEXPECTED RESULT: no message about replicated segment No. %d for %d seconds.' % (int(last_generated_repl_segment), max_allowed_time_for_wait) )
|
||||
#
|
||||
#
|
||||
# #--------------------------------------------
|
||||
#
|
||||
# def wait_for_add_queue_in_replica( fb_home, max_allowed_time_for_wait, min_timestamp, prefix_msg = '' ):
|
||||
#
|
||||
# global re
|
||||
# global difflib
|
||||
# global time
|
||||
# global datetime
|
||||
#
|
||||
# # <hostname> (replica) Tue Sep 21 20:24:57 2021
|
||||
# # Database: ...
|
||||
# # Added 3 segment(s) to the processing queue
|
||||
#
|
||||
# # -:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-
|
||||
# def check_pattern_in_log( log_lines, pattern, min_timestamp, prefix_msg = '' ):
|
||||
# found_required_message = False
|
||||
# for i,r in enumerate(log_lines):
|
||||
# if pattern.search(r):
|
||||
# if i>=2 and log_lines[i-2]:
|
||||
# # a = r.replace('(',' ').split()
|
||||
# a = log_lines[i-2].split()
|
||||
# if len(a)>=4:
|
||||
# # s='replica_host_name (slave) Sun May 30 17:46:43 2021'
|
||||
# # s.split()[-5:] ==> ['Sun', 'May', '30', '17:46:43', '2021']
|
||||
# # ' '.join( ...) ==> 'Sun May 30 17:46:43 2021'
|
||||
# dts = ' '.join( log_lines[i-2].split()[-5:] )
|
||||
# segment_timestamp = datetime.strptime( dts, '%a %b %d %H:%M:%S %Y')
|
||||
# if segment_timestamp >= min_timestamp:
|
||||
# print( (prefix_msg + ' ' if prefix_msg else '') + 'FOUND message about segments added to queue after given timestamp.') #, 'segment_timestamp=%s' % segment_timestamp, '; min_timestamp=%s' % min_timestamp )
|
||||
# found_required_message = True
|
||||
# break
|
||||
# return found_required_message
|
||||
#
|
||||
# # -:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-
|
||||
#
|
||||
# replold_lines = []
|
||||
# with open( os.path.join(fb_home,'replication.log'), 'r') as f:
|
||||
# replold_lines = f.readlines()
|
||||
#
|
||||
#
|
||||
# segments_to_queue_pattern=re.compile( 'verbose:\\s+added\\s+\\d+\\s+segment.*to.*queue', re.IGNORECASE)
|
||||
#
|
||||
# # 08.09.2021: replication content can remain unchanged if there was no user-defined object in DB that must be dropped!
|
||||
# # Because of this, it is crucial to check OLD content of replication log before loop.
|
||||
# # Also, segments_to_queue_pattern must NOT start from '\\+' because it can occur only for diff_data (within loop):
|
||||
# #
|
||||
# found_required_message = check_pattern_in_log( replold_lines, segments_to_queue_pattern, min_timestamp, prefix_msg )
|
||||
#
|
||||
# if not found_required_message:
|
||||
#
|
||||
# for i in range(0,max_allowed_time_for_wait):
|
||||
# time.sleep(1)
|
||||
#
|
||||
# # Get content of fb_home replication.log _after_ isql finish:
|
||||
# f_repllog_new = open( os.path.join(fb_home,'replication.log'), 'r')
|
||||
# diff_data = difflib.unified_diff(
|
||||
# replold_lines,
|
||||
# f_repllog_new.readlines()
|
||||
# )
|
||||
# f_repllog_new.close()
|
||||
#
|
||||
# found_required_message = check_pattern_in_log( list(diff_data), segments_to_queue_pattern, min_timestamp, prefix_msg )
|
||||
# if found_required_message:
|
||||
# break
|
||||
#
|
||||
# if not found_required_message:
|
||||
# print('UNEXPECTED RESULT: no message about segments added to queue after %s.' % min_timestamp)
|
||||
#
|
||||
# #--------------------------------------------
|
||||
#
|
||||
# sql_ddl = ''' set bail on;
|
||||
# recreate table test(s varchar(700), constraint test_s_unq unique(s));
|
||||
# commit;
|
||||
#
|
||||
# set term ^;
|
||||
# execute block as
|
||||
# declare fld_len int;
|
||||
# declare n int;
|
||||
# begin
|
||||
# select ff.rdb$field_length
|
||||
# from rdb$relation_fields rf
|
||||
# join rdb$fields ff on rf.rdb$field_source = ff.rdb$field_name
|
||||
# where upper(rf.rdb$relation_name) = upper('test') and upper(rf.rdb$field_name) = upper('s')
|
||||
# into fld_len;
|
||||
#
|
||||
#
|
||||
# n = 10000;
|
||||
# while (n > 0) do
|
||||
# begin
|
||||
# insert into test(s) values( lpad('', :fld_len, uuid_to_char(gen_uuid())) );
|
||||
# n = n - 1;
|
||||
# end
|
||||
#
|
||||
# end
|
||||
# ^
|
||||
# set term ;^
|
||||
# commit;
|
||||
# ''' % locals()
|
||||
#
|
||||
#
|
||||
# f_sql_chk = open( os.path.join(context['temp_directory'],'tmp_gh_6975_init.sql'), 'w')
|
||||
# f_sql_chk.write(sql_ddl)
|
||||
# flush_and_close( f_sql_chk )
|
||||
#
|
||||
# f_sql_log = open( ''.join( (os.path.splitext(f_sql_chk.name)[0], '.log' ) ), 'w')
|
||||
# f_sql_err = open( ''.join( (os.path.splitext(f_sql_chk.name)[0], '.err' ) ), 'w')
|
||||
# subprocess.call( [ context['isql_path'], 'localhost:' + db_main, '-i', f_sql_chk.name ], stdout = f_sql_log, stderr = f_sql_err)
|
||||
# flush_and_close( f_sql_log )
|
||||
# flush_and_close( f_sql_err )
|
||||
#
|
||||
# last_generated_repl_segment = 0
|
||||
#
|
||||
# with open(f_sql_err.name,'r') as f:
|
||||
# for line in f:
|
||||
# print('UNEXPECTED STDERR in initial SQL: ' + line)
|
||||
# MAX_TIME_FOR_WAIT_SEGMENT_IN_LOG = 0
|
||||
#
|
||||
# if MAX_TIME_FOR_WAIT_SEGMENT_IN_LOG: # ==> initial SQL script finished w/o errors
|
||||
#
|
||||
#
|
||||
# ##################################
|
||||
# ### A.C.H.T.U.N.G ###
|
||||
# ### do NOT use datetime.now() ###
|
||||
# ### because of missed accuracy ###
|
||||
# ### of timestamps in repl.log ###
|
||||
# ### (it is HH:MM:SS only) ###
|
||||
# ##################################
|
||||
# current_date_with_hhmmss = datetime.today().replace(microsecond=0)
|
||||
#
|
||||
#
|
||||
# ##############################################################################
|
||||
# ### W A I T F O R S E G M E N T S A D D E D T O Q U E U E ###
|
||||
# ##############################################################################
|
||||
# wait_for_add_queue_in_replica( FB_HOME, MAX_TIME_FOR_WAIT_ADDED_TO_QUEUE, current_date_with_hhmmss, 'POINT-A' )
|
||||
#
|
||||
# # This led to crash and appearance of message:
|
||||
# # "Fatal lock manager error: invalid lock id (0), errno: 0" in firebird.log:
|
||||
# #
|
||||
# runProgram('gfix', ['-shut', 'full', '-force', '0', 'localhost:' + db_repl])
|
||||
#
|
||||
# f_repl_hdr_log=open( os.path.join(context['temp_directory'],'db_repl_hdr.log'), 'w')
|
||||
# subprocess.call( [context['gstat_path'], db_repl, '-h'], stdout=f_repl_hdr_log, stderr=subprocess.STDOUT )
|
||||
# flush_and_close( f_repl_hdr_log )
|
||||
#
|
||||
# with open(f_repl_hdr_log.name,'r') as f:
|
||||
# for line in f:
|
||||
# if 'Attributes' in line:
|
||||
# print('POINT-B ' + line.strip())
|
||||
#
|
||||
#
|
||||
# # This (issuing 'gfix -shu ...' second time) led FB process to hang!
|
||||
# # runProgram('gfix', ['-shut', 'full', '-force', '0', 'localhost:' + db_repl])
|
||||
#
|
||||
# runProgram('gfix', ['-online', 'localhost:' + db_repl])
|
||||
#
|
||||
#
|
||||
# ##############################################################################
|
||||
# ### W A I T U N T I L R E P L I C A B E C O M E S A C T U A L ###
|
||||
# ##############################################################################
|
||||
# wait_for_data_in_replica( FB_HOME, MAX_TIME_FOR_WAIT_SEGMENT_IN_LOG, db_main, 'POINT-1' )
|
||||
#
|
||||
# # return initial state of master DB:
|
||||
# # remove all DB objects (tables, views, ...):
|
||||
# # --------------------------------------------
|
||||
# sql_clean_ddl = os.path.join(context['files_location'],'drop-all-db-objects.sql')
|
||||
#
|
||||
# f_clean_log=open( os.path.join(context['temp_directory'],'drop-all-db-objects-gh_6975.log'), 'w')
|
||||
# f_clean_err=open( ''.join( ( os.path.splitext(f_clean_log.name)[0], '.err') ), 'w')
|
||||
# subprocess.call( [context['isql_path'], 'localhost:' + db_main, '-q', '-nod', '-i', sql_clean_ddl], stdout=f_clean_log, stderr=f_clean_err )
|
||||
# flush_and_close(f_clean_log)
|
||||
# flush_and_close(f_clean_err)
|
||||
#
|
||||
# with open(f_clean_err.name,'r') as f:
|
||||
# for line in f:
|
||||
# print('UNEXPECTED STDERR in cleanup SQL: ' + line)
|
||||
# MAX_TIME_FOR_WAIT_SEGMENT_IN_LOG = 0
|
||||
#
|
||||
# with open(f_clean_log.name,'r') as f:
|
||||
# for line in f:
|
||||
# # show number of dropped objects
|
||||
# print(line)
|
||||
#
|
||||
# if MAX_TIME_FOR_WAIT_SEGMENT_IN_LOG: # ==> previous SQL script finished w/o errors
|
||||
#
|
||||
# ##############################################################################
|
||||
# ### W A I T U N T I L R E P L I C A B E C O M E S A C T U A L ###
|
||||
# ##############################################################################
|
||||
# wait_for_data_in_replica( FB_HOME, MAX_TIME_FOR_WAIT_SEGMENT_IN_LOG, db_main, 'POINT-2' )
|
||||
#
|
||||
# f_main_meta_sql=open( os.path.join(context['temp_directory'],'db_main_meta_gh_6975.sql'), 'w')
|
||||
# subprocess.call( [context['isql_path'], 'localhost:' + db_main, '-q', '-nod', '-ch', 'utf8', '-x'], stdout=f_main_meta_sql, stderr=subprocess.STDOUT )
|
||||
# flush_and_close( f_main_meta_sql )
|
||||
#
|
||||
# f_repl_meta_sql=open( os.path.join(context['temp_directory'],'db_repl_meta_gh_6975.sql'), 'w')
|
||||
# subprocess.call( [context['isql_path'], 'localhost:' + db_repl, '-q', '-nod', '-ch', 'utf8', '-x'], stdout=f_repl_meta_sql, stderr=subprocess.STDOUT )
|
||||
# flush_and_close( f_repl_meta_sql )
|
||||
#
|
||||
# db_main_meta=open(f_main_meta_sql.name, 'r')
|
||||
# db_repl_meta=open(f_repl_meta_sql.name, 'r')
|
||||
#
|
||||
# diffmeta = ''.join(difflib.unified_diff(
|
||||
# db_main_meta.readlines(),
|
||||
# db_repl_meta.readlines()
|
||||
# ))
|
||||
# db_main_meta.close()
|
||||
# db_repl_meta.close()
|
||||
#
|
||||
# f_meta_diff=open( os.path.join(context['temp_directory'],'db_meta_diff_gh_6975.txt'), 'w', buffering = 0)
|
||||
# f_meta_diff.write(diffmeta)
|
||||
# flush_and_close( f_meta_diff )
|
||||
#
|
||||
# # Following must issue only TWO rows:
|
||||
# # UNEXPECTED METADATA DIFF.: -/* CREATE DATABASE 'localhost:[db_main]' ... */
|
||||
# # UNEXPECTED METADATA DIFF.: -/* CREATE DATABASE 'localhost:[db_repl]' ... */
|
||||
# # Only thes lines will be suppressed further (see subst. section):
|
||||
# with open(f_meta_diff.name, 'r') as f:
|
||||
# for line in f:
|
||||
# if line[:1] in ('-', '+') and line[:3] not in ('---','+++'):
|
||||
# print('UNEXPECTED METADATA DIFF.: ' + line)
|
||||
#
|
||||
# runProgram('gfix', ['-w', 'sync', 'localhost:' + db_main])
|
||||
#
|
||||
# ######################
|
||||
# ### A C H T U N G ###
|
||||
# ######################
|
||||
# # MANDATORY, OTHERWISE REPLICATION GETS STUCK ON SECOND RUN OF THIS TEST
|
||||
# # WITH 'ERROR: Record format with length 68 is not found for table TEST':
|
||||
# runProgram('gfix', ['-sweep', 'localhost:' + db_repl])
|
||||
# runProgram('gfix', ['-sweep', 'localhost:' + db_main])
|
||||
# #######################
|
||||
#
|
||||
# # cleanup:
|
||||
# ##########
|
||||
# #cleanup( (f_sql_chk, f_sql_log, f_sql_err,f_clean_log,f_clean_err,f_main_meta_sql,f_repl_meta_sql,f_meta_diff) )
|
||||
#
|
||||
#---
|
||||
#assert '' == capsys.readouterr().out
|
||||
|
||||
###################
|
||||
somewhat_failed = 1
|
||||
###################
|
||||
try:
|
||||
|
||||
N_ROWS = 30000
|
||||
FLD_WIDTH = 700
|
||||
|
||||
# N_ROWS = 30'000:
|
||||
# FW = ON ==>
|
||||
# Added 2 segment(s) to the processing queue
|
||||
# Segment 1 (16783004 bytes) is replicated in 1 minute(s), preserving the file due to 1 active transaction(s) (oldest: 10 in segment 1)
|
||||
# Segment 2 (4667696 bytes) is replicated in 55 second(s), deleting the file
|
||||
# FW = OFF ==>
|
||||
# Segment 1 (16783004 bytes) is replicated in 1 second(s), preserving the file due to 1 active transaction(s) (oldest: 10 in segment 1)
|
||||
# Segment 2 (4667696 bytes) is replicated in 374 ms, deleting the file
|
||||
|
||||
act_db_main.db.set_async_write()
|
||||
act_db_repl.db.set_sync_write()
|
||||
assert '' == capsys.readouterr().out
|
||||
|
||||
current_date_with_hhmmss = datetime.today().replace(microsecond=0) # datetime.datetime(2022, 8, 26, 22, 54, 33) etc
|
||||
|
||||
sql_init = f'''
|
||||
set bail on;
|
||||
recreate table test(s varchar({FLD_WIDTH}), constraint test_s_unq unique(s));
|
||||
commit;
|
||||
|
||||
set term ^;
|
||||
execute block as
|
||||
declare fld_len int;
|
||||
declare n int;
|
||||
begin
|
||||
select ff.rdb$field_length
|
||||
from rdb$relation_fields rf
|
||||
join rdb$fields ff on rf.rdb$field_source = ff.rdb$field_name
|
||||
where upper(rf.rdb$relation_name) = upper('test') and upper(rf.rdb$field_name) = upper('s')
|
||||
into fld_len;
|
||||
|
||||
|
||||
n = {N_ROWS};
|
||||
while (n > 0) do
|
||||
begin
|
||||
insert into test(s) values( lpad('', :fld_len, uuid_to_char(gen_uuid())) );
|
||||
n = n - 1;
|
||||
end
|
||||
|
||||
end
|
||||
^
|
||||
set term ;^
|
||||
commit;
|
||||
'''
|
||||
|
||||
act_db_main.expected_stderr = ''
|
||||
act_db_main.isql(switches=['-q'], input = sql_init)
|
||||
assert act_db_main.clean_stderr == act_db_main.clean_expected_stderr
|
||||
act_db_main.reset()
|
||||
|
||||
act_db_main.expected_stdout = f'POINT-1 FOUND message about segments added to queue after timestamp {current_date_with_hhmmss}'
|
||||
##############################################################################
|
||||
### W A I T F O R S E G M E N T S A D D E D T O Q U E U E ###
|
||||
##############################################################################
|
||||
wait_for_add_queue_in_replica( act_db_main, MAX_TIME_FOR_WAIT_ADDED_TO_QUEUE, current_date_with_hhmmss, 'POINT-1' )
|
||||
|
||||
act_db_main.stdout = capsys.readouterr().out
|
||||
assert act_db_main.clean_stdout == act_db_main.clean_expected_stdout
|
||||
act_db_main.reset()
|
||||
|
||||
time.sleep(1)
|
||||
|
||||
with act_db_repl.connect_server() as srv:
|
||||
|
||||
try:
|
||||
# 5.0.0.215:
|
||||
# 335544344 : I/O error during "WriteFile" operation for file "<db_repl_file.fdb>"
|
||||
# 335544737 : Error while trying to write to file
|
||||
srv.database.set_write_mode(database=act_db_repl.db.db_path
|
||||
, mode=DbWriteMode.ASYNC
|
||||
)
|
||||
except:
|
||||
pass
|
||||
|
||||
#try:
|
||||
# 5.0.0.215:
|
||||
# FB crashes here, replication archive folder can not be cleaned:
|
||||
# PermissionError: [WinError 32] ...: '<repl_arc_sub_dir>/<dbmain>.journal-NNN'
|
||||
srv.database.shutdown(
|
||||
database=act_db_repl.db.db_path
|
||||
,mode=ShutdownMode.FULL
|
||||
,method=ShutdownMethod.FORCED
|
||||
,timeout=0
|
||||
)
|
||||
|
||||
# Without crash replication here will be resumed, but DB_REPL now has FW = OFF, and segments
|
||||
# will be replicated very fast after this:
|
||||
srv.database.bring_online(
|
||||
database=act_db_repl.db.db_path
|
||||
,mode=OnlineMode.NORMAL
|
||||
)
|
||||
|
||||
assert '' == capsys.readouterr().out
|
||||
|
||||
act_db_main.expected_stdout = 'POINT-2 FOUND message about replicated segment'
|
||||
##############################################################################
|
||||
### W A I T U N T I L R E P L I C A B E C O M E S A C T U A L ###
|
||||
##############################################################################
|
||||
wait_for_data_in_replica( act_db_main, MAX_TIME_FOR_WAIT_SEGMENT_IN_LOG, 'POINT-2' )
|
||||
|
||||
act_db_main.stdout = capsys.readouterr().out
|
||||
assert act_db_main.clean_stdout == act_db_main.clean_expected_stdout
|
||||
act_db_main.reset()
|
||||
|
||||
|
||||
#---------------------------------------------------
|
||||
|
||||
# return initial state of master DB:
|
||||
# remove all DB objects (tables, views, ...):
|
||||
#
|
||||
db_main_meta, db_repl_meta = '', ''
|
||||
for a in (act_db_main,act_db_repl):
|
||||
if a == act_db_main:
|
||||
sql_clean = (a.files_dir / 'drop-all-db-objects.sql').read_text()
|
||||
a.expected_stdout = """
|
||||
Start removing objects
|
||||
Finish. Total objects removed
|
||||
"""
|
||||
a.isql(switches=['-q', '-nod'], input = sql_clean, combine_output = True)
|
||||
assert a.clean_stdout == a.clean_expected_stdout
|
||||
a.reset()
|
||||
|
||||
|
||||
a.expected_stdout = 'POINT-3 FOUND message about replicated segment'
|
||||
##############################################################################
|
||||
### W A I T U N T I L R E P L I C A B E C O M E S A C T U A L ###
|
||||
##############################################################################
|
||||
wait_for_data_in_replica( a, MAX_TIME_FOR_WAIT_SEGMENT_IN_LOG, 'POINT-3' )
|
||||
|
||||
a.stdout = capsys.readouterr().out
|
||||
assert a.clean_stdout == a.clean_expected_stdout
|
||||
a.reset()
|
||||
|
||||
db_main_meta = a.extract_meta(charset = 'utf8', io_enc = 'utf8')
|
||||
else:
|
||||
db_repl_meta = a.extract_meta(charset = 'utf8', io_enc = 'utf8')
|
||||
|
||||
######################
|
||||
### A C H T U N G ###
|
||||
######################
|
||||
# MANDATORY, OTHERWISE REPLICATION GETS STUCK ON SECOND RUN OF THIS TEST
|
||||
# WITH 'ERROR: Record format with length NN is not found for table TEST':
|
||||
a.gfix(switches=['-sweep', a.db.dsn])
|
||||
|
||||
|
||||
# Final point: metadata must become equal:
|
||||
#
|
||||
diff_meta = ''.join(unified_diff( \
|
||||
[x for x in db_main_meta.splitlines() if 'CREATE DATABASE' not in x],
|
||||
[x for x in db_repl_meta.splitlines() if 'CREATE DATABASE' not in x])
|
||||
)
|
||||
assert diff_meta == ''
|
||||
|
||||
|
||||
###################
|
||||
somewhat_failed = 0
|
||||
###################
|
||||
|
||||
except Exception as e:
|
||||
print(e.__str__())
|
||||
|
||||
finally:
|
||||
if somewhat_failed:
|
||||
# If any previous assert failed, we have to RECREATE both master and slave databases.
|
||||
# Otherwise further execution of this test or other replication-related tests most likely will fail.
|
||||
for a in (act_db_main,act_db_repl):
|
||||
d = a.db.db_path
|
||||
a.db.drop()
|
||||
dbx = create_database(str(d), user = a.db.user)
|
||||
dbx.close()
|
||||
with a.connect_server() as srv:
|
||||
srv.database.set_write_mode(database = d, mode=DbWriteMode.ASYNC)
|
||||
srv.database.set_sweep_interval(database = d, interval = 0)
|
||||
if a == act_db_repl:
|
||||
srv.database.set_replica_mode(database = d, mode = ReplicaMode.READ_ONLY)
|
||||
else:
|
||||
with a.db.connect() as con:
|
||||
# !! IT IS ASSUMED THAT REPLICATION FOLDERS ARE IN THE SAME DIR AS <DB_MAIN> !!
|
||||
# DO NOT use 'a.db.db_path' for ALIASED database!
|
||||
# Its '.parent' property will be '.' rather than full path.
|
||||
# Use only con.info.name for that:
|
||||
repl_root_path = Path(con.info.name).parent
|
||||
repl_jrn_sub_dir = repl_settings['journal_sub_dir']
|
||||
repl_arc_sub_dir = repl_settings['archive_sub_dir']
|
||||
|
||||
# Clean folders repl_journal and repl_archive (remove all files from there):
|
||||
for p in (repl_jrn_sub_dir,repl_arc_sub_dir):
|
||||
# PermissionError: [WinError 32] ...: '<repl_arc_sub_dir>/<dbmain>.journal-000000001'
|
||||
assert cleanup_folder(repl_root_path / p) == 0, f"Directory {str(p)} remains non-empty."
|
||||
|
||||
con.execute_immediate('alter database enable publication')
|
||||
con.execute_immediate('alter database include all to publication')
|
||||
con.commit()
|
||||
assert '' == capsys.readouterr().out
|
||||
|
||||
Loading…
Reference in New Issue
Block a user