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Commit7c9e19c

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author
Amit Kapila
committed
During the split, set checksum on an empty hash index page.
On a split, we allocate a new splitpoint's worth of bucket pages whereinwe initialize the last page with zeros which is fine, but we forgot to setthe checksum for that last page.We decided to back-patch this fix till 10 because we don't have an easyway to test it in prior versions. Another reason is that the hash-indexcode is changed heavily in 10, so it is not advisable to push the fixwithout testing it in prior versions.Author: Amit KapilaReviewed-by: Yugo NagataBackpatch-through: 10Discussion:https://postgr.es/m/5d03686d-727c-dbf8-0064-bf8b97ffe850@2ndquadrant.com
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‎src/backend/access/hash/hashpage.c

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Original file line numberDiff line numberDiff line change
@@ -1038,6 +1038,7 @@ _hash_alloc_buckets(Relation rel, BlockNumber firstblock, uint32 nblocks)
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true);
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RelationOpenSmgr(rel);
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PageSetChecksumInplace(page,lastblock);
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smgrextend(rel->rd_smgr,MAIN_FORKNUM,lastblock,zerobuf.data, false);
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return true;

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