Add TCP keepalive option for the metastore server
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Key: HIVE-1410
URL: https://issues.apache.org/jira/browse/HIVE-1410
Project: Hadoop Hive
Issue Type: New Feature
Components: Metastore
Affects Versions: 0.6.0
Reporter: Paul Yang
Assignee: Paul Yang
In production, we have noticed that the metastore server tends to accumulate
half-open TCP connections when it has been running for a long time. By
half-open, I am referring to idle connections where there is an established TCP
connection on the metastore server machine, but no corresponding connection on
the client machine. This could be the result of network disconnects or crashed
clients.
This patch will add an option to turn on TCP keepalive so that these half-open
connections will get cleaned up.
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