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Merge pull request #7666 from red-soft-ru/5_0_drop_table_fix
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Fix #7664: DROP TABLE executed for a table with big records may lead to "wrong page type" or "end of file" error
This commit is contained in:
Vlad Khorsun 2023-07-07 14:22:01 +03:00
parent 04a246c5c3
commit c867663df1
2 changed files with 20 additions and 10 deletions
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27
src/jrd/dpm.epp
View File

@ -2299,6 +2299,8 @@ void DPM_update( thread_db* tdbb, record_param* rpb, PageStack* stack, const jrd
Database* dbb = tdbb->getDatabase();
CHECK_DBB(dbb);
rpb->rpb_flags &= ~(rpb_fragment | rpb_incomplete | rpb_large | rpb_chained | rpb_gc_active | rpb_long_tranum);
#ifdef VIO_DEBUG
jrd_rel* relation = rpb->rpb_relation;
VIO_trace(DEBUG_WRITES,
@ -2561,20 +2563,31 @@ static void delete_tail(thread_db* tdbb, rhdf* header, const USHORT page_space,
if (!(header->rhdf_flags & rhd_blob))
{
USHORT flags = header->rhdf_flags;
ULONG page_number = header->rhdf_f_page;
while (true)
fb_assert(flags & rhd_incomplete);
while (flags & rhd_incomplete)
{
window.win_page = page_number;
data_page* dpage = (data_page*) CCH_FETCH(tdbb, &window, LCK_read, pag_data);
header = (rhdf*) ((UCHAR *) dpage + dpage->dpg_rpt[0].dpg_offset);
const USHORT flags = header->rhdf_flags;
page_number = header->rhdf_f_page;
CCH_RELEASE_TAIL(tdbb, &window);
PAG_release_page(tdbb, window.win_page, ZERO_PAGE_NUMBER);
if (dpage->dpg_header.pag_flags & dpg_orphan &&
dpage->dpg_header.pag_flags & dpg_full &&
dpage->dpg_count == 1)
{
header = (rhdf*) ((UCHAR *) dpage + dpage->dpg_rpt[0].dpg_offset);
flags = header->rhdf_flags;
page_number = header->rhdf_f_page;
if (!(flags & rhd_incomplete))
CCH_RELEASE_TAIL(tdbb, &window);
PAG_release_page(tdbb, window.win_page, ZERO_PAGE_NUMBER);
}
else
{
fb_assert(false);
break;
}
}
return;
}

3
src/jrd/vio.cpp
View File

@ -666,8 +666,6 @@ void VIO_backout(thread_db* tdbb, record_param* rpb, const jrd_tra* transaction)
else
{
// There is cleanup to be done. Bring the old version forward first
rpb->rpb_flags &= ~(rpb_fragment | rpb_incomplete | rpb_chained | rpb_gc_active | rpb_long_tranum);
DPM_update(tdbb, rpb, 0, transaction);
delete_tail(tdbb, &temp2, rpb->rpb_page, 0, 0);
}
@ -6061,7 +6059,6 @@ static void replace_record(thread_db* tdbb,
#endif
record_param temp = *rpb;
rpb->rpb_flags &= ~(rpb_fragment | rpb_incomplete | rpb_chained | rpb_gc_active | rpb_long_tranum);
DPM_update(tdbb, rpb, stack, transaction);
delete_tail(tdbb, &temp, rpb->rpb_page, 0, 0);