Peter Varga created HIVE-23725:
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Summary: ValidTxnManager snapshot outdating causing partial reads
in merge inserst
Key: HIVE-23725
URL: https://issues.apache.org/jira/browse/HIVE-23725
Project: Hive
Issue Type: Bug
Reporter: Peter Varga
Assignee: Peter Varga
When the ValidTxnManager invalidates the snapshot during merge insert and
starts to read committed transactions that were not committed when the query
compilation happened, it can cause partial read problems if the committed
transaction created new partition in the source or target table.
The solution should be not only fix the snapshot but also recompile the query
and acquire the locks again
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