Eugene Koifman created HIVE-17231:
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Summary: ColumnizedDeleteEventRegistry.DeleteReaderValue
optimization
Key: HIVE-17231
URL: https://issues.apache.org/jira/browse/HIVE-17231
Project: Hive
Issue Type: Sub-task
Components: Transactions
Reporter: Eugene Koifman
For unbucketed tables DeleteReaderValue will currently return all delete
events. Once we trust that
the N in bucketN for "base" spit is reliable, all delete events not
matching N can be skipped.
This is useful to protect against extreme cases where someone runs an
update/delete on a partition that matches 10 billion rows thus generates very
many delete events.
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