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

["Ashutosh Chauhan (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-20854?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16856134#comment-16856134 ] 

Ashutosh Chauhan commented on HIVE-20854:
-----------------------------------------

This one needs to be pushed in.

> 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
>            Assignee: Gopal V
>            Priority: Major
>         Attachments: HIVE-20854.1.patch, HIVE-20854.2.patch
>
>
> {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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