[jira] [Created] (HIVE-20854) Sensible Defaults: Hive's Zookeeper heartbeat interval is 20 minutes, change to 2

["Gopal V (JIRA)" <ji...@apache.org>]

Gopal V created HIVE-20854:
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             Summary: Sensible Defaults: Hive's Zookeeper heartbeat interval is 20 minutes, change to 2
                 Key: HIVE-20854
                 URL: https://issues.apache.org/jira/browse/HIVE-20854
             Project: Hive
          Issue Type: Bug
            Reporter: Gopal V


{code}
    HIVE_ZOOKEEPER_SESSION_TIMEOUT("hive.zookeeper.session.timeout", "1200000ms",
        new TimeValidator(TimeUnit.MILLISECONDS),
        "ZooKeeper client's session timeout (in milliseconds). The client is disconnected, and as a result, all locks released, \n" +
        "if a heartbeat is not sent in the timeout."),
{code}

That's 1,200,000ms which is too long for all practical purposes - a 20 minute outage in case a node has a failure is too long.

That is too long for the JDBC load-balancing, LLAP failure tolerance and the lock manager expiry.

Change to 2 minutes, as a sensible default



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