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tx1: update table t ... where id = 1
tx2: update table t ... where id = 1
If tx2's is in WAIT mode, it will wait for end of tx1 forever and this wait can't be breaked nor using DELETE FROM MON$xxx, nor using fb_cancel_operation.
The improvement is to make lock manager able to break such endless waitings.
Test Details: Currently implemented only for running on Windows => Replaced subprocess.call with shell=True with Popen. Should work both on Linux and Windows.
Test Details: Replaced subprocess.call with shell=True with Popen. Should work both on Linux and Windows. => Fully reimplemented 10.01.2020. Details can be seen in .fbt. Problems with 4.0 CS detected, sent letter to dimitr et al.
Submitted by: @hvlad
Jira_subtask_outward CORE3331
Relate to CORE4004
Consider following example :
tx1: update table t ... where id = 1
tx2: update table t ... where id = 1
If tx2's is in WAIT mode, it will wait for end of tx1 forever and this wait can't be breaked nor using DELETE FROM MON$xxx, nor using fb_cancel_operation.
The improvement is to make lock manager able to break such endless waitings.
Commits: f760ee4 12ada43 b2b911f
====== Test Details ======
Fully reimplemented 10.01.2020. Details can be seen in .fbt. Problems with 4.0 CS detected, sent letter to dimitr et al.
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