saveBRM on failover runs before the dbroot is exchanged. this could lead to saveBRM being run before the brm_saves_journal file exists on the new primary module on a OAM parent failure and could lead to load_brm hanging.
Reproduce by setting up multi-node glusterfs installation and perform large table import. After import completes kill PM1 and wait for PM2 to take over primary roll will see save_brm command run first then dbroot1 moved to PM2 and then load_brm called in logging.
Fix is to first move dbroot1 then run saveBRM this should allow load_brm to run successfully.
Part of this fix was reverted with other failover changes in MCOL-3842. This all was merged into 1.2.6 and 1.4.4 And will have been retested by MCOL-3842. Moving to test for 1.2.6 if necessary.
Ben Thompson (Inactive)
added a comment - - edited Part of this fix was reverted with other failover changes in MCOL-3842 . This all was merged into 1.2.6 and 1.4.4 And will have been retested by MCOL-3842 . Moving to test for 1.2.6 if necessary.
This was all merged in 1.2.6 with MCOL-3842 - Restesting of that MCOL in 1.2 should be sufficient for closing this if already completed.
Ben Thompson (Inactive)
added a comment - This was all merged in 1.2.6 with MCOL-3842 - Restesting of that MCOL in 1.2 should be sufficient for closing this if already completed.
Failover (PM1 to PM2) after a 10g lineitem import worked fine.
According to the debug.log on PM2, save_brm is still being executed first, then dbroot moved.
Daniel Lee (Inactive)
added a comment - Build tested: 1.4.4-1 (Jenkins 20200601)
Failover (PM1 to PM2) after a 10g lineitem import worked fine.
According to the debug.log on PM2, save_brm is still being executed first, then dbroot moved.
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Ben Thompson (Inactive)
Ben Thompson (Inactive)
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Bug
Critical
Looks ok. This will need to get into develop, and develop-1.
{2,4}also.