[jira] Updated: (HIVE-1410) Add TCP keepalive option for the metastore server

["Paul Yang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-1410?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Paul Yang updated HIVE-1410:
----------------------------

    Attachment: HIVE-1410.1.patch

No unit test for this one, but I ran 2 metastore servers, one with and one without this patch to verify that the one with the patch did not accumulate half-open connections.

> Add TCP keepalive option for the metastore server
> -------------------------------------------------
>
>                 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
>         Attachments: HIVE-1410.1.patch
>
>
> 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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