Eugene Koifman created HIVE-11965:
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Summary: add heartbeat count for each lock/transaction
Key: HIVE-11965
URL: https://issues.apache.org/jira/browse/HIVE-11965
Project: Hive
Issue Type: Bug
Components: Transactions
Affects Versions: 0.14.0
Reporter: Eugene Koifman
Assignee: Eugene Koifman
We should add a HEARTBEAT_COUNT column to HIVE_LOCKS and TXNS tables so that
queries that update LAST_HEARTBEAT also set HEARTBEAT_COUNT=HEARTBEAT_COUNT + 1.
This should only be set on explicit heartbeat call, not ones resulting from
commits, etc.
This has low overhead but allows us to detect clients that heartbeat more often
than is necessary thus creating useless extra load on metastore.
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