[jira] Updated: (HIVE-410) Heartbeating for streaming jobs should not depend on stdout

["Ashish Thusoo (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-410?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ashish Thusoo updated HIVE-410:
-------------------------------

    Attachment: patch-410.txt

The fix is quite simple. I have not been able to add a test case yet as I need miniMR for that. If this goes in before miniMR stuff, I will add a test case in a separate JIRA.


> Heartbeating for streaming jobs should not depend on stdout
> -----------------------------------------------------------
>
>                 Key: HIVE-410
>                 URL: https://issues.apache.org/jira/browse/HIVE-410
>             Project: Hadoop Hive
>          Issue Type: Bug
>            Reporter: Venky Iyer
>            Assignee: Ashish Thusoo
>            Priority: Blocker
>         Attachments: patch-410.txt
>
>
> jobs that require iterative processing may take longer than 10 mins to produce rows. This shouldn't be cause to kill the job. Producing keepalive dummy rows to stdout is bad if the data has to go into a Hive table or other Hive steps.
> If we adopt the solution of using stderr to indicate heartbeats, can that be combined with streaming counters (http://hadoop.apache.org/core/docs/current/streaming.html#How+do+I+update+counters+in+streaming+applications%3F )? Also, will limitations on size of stderr break this?

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