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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-10132) LLAP: Tez heartbeats are delayed by ~500+ ms due to Hadoop IPC client
Date Wed, 18 Nov 2015 02:16:11 GMT

    [ https://issues.apache.org/jira/browse/HIVE-10132?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15010044#comment-15010044
] 

Sergey Shelukhin commented on HIVE-10132:
-----------------------------------------

[~gopalv] do we still need this now that HADOOP-11772 is resolved?

> LLAP: Tez heartbeats are delayed by ~500+ ms due to Hadoop IPC client
> ---------------------------------------------------------------------
>
>                 Key: HIVE-10132
>                 URL: https://issues.apache.org/jira/browse/HIVE-10132
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Gopal V
>            Assignee: Siddharth Seth
>         Attachments: HIVE-10132.NOT.A.patch
>
>
> HADOOP-11772 has a clearer bug report of the core issue inside hadoop-common.
> Due to the delayed heartbeats reaching the AM, the reducers are losing up-to a couple
of seconds for a 60ms (x10 parallel) mapper + 300ms reducer instead of finishing the query
in under a second.



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