Re: Hash index corruption and CLOG lookup errors from checkpoint races

Fri, 06 Nov 2026 08:21:23 -0800 

Hi Vignesh,

Thanks for the test and for trying the backport.

How did I miss your MultiXact case..... 0005 take care of it.

For the back branches I attached two versions of 0003. The one for 16
to 18 uses PageSetChecksumInplace(). The one for 14 and 15 also uses
rd_node.

I can send back-branch versions of 0005 once the master version looks
fine to people. 0001 to 0004 have no code changes.

Thanks,
Shihao

Attachment: v3-0003-Extend-hash-index-before-WAL-logging-new-bucket-page.patch
Description: Binary data

Attachment: v3-0001-Advance-oldestXid-before-truncating-CLOG.patch
Description: Binary data

Attachment: v3-0005-Advance-oldestMulti-before-WAL-logging-MultiXact-tru.patch
Description: Binary data

Attachment: v3-0002-Add-test-for-a-checkpoint-that-starts-during-CLOG-tr.patch
Description: Binary data

Attachment: v3-0004-Add-test-for-a-checkpoint-that-starts-during-hash-bu.patch
Description: Binary data

Attachment: v3-0006-Add-test-for-a-checkpoint-that-starts-during-MultiXa.patch
Description: Binary data

Attachment: v3-0003-REL_16-18-hash-extend-before-wal.patch.nocfbot
Description: Binary data

Attachment: v3-0003-REL_14-15-hash-extend-before-wal.patch.nocfbot
Description: Binary data

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