You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@tez.apache.org by "Jonathan Eagles (JIRA)" <ji...@apache.org> on 2017/09/13 21:57:00 UTC

[jira] [Updated] (TEZ-3831) Reduce Unordered memory needed for storing empty completed events

     [ https://issues.apache.org/jira/browse/TEZ-3831?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Eagles updated TEZ-3831:
---------------------------------
    Attachment: Screen Shot 2017-09-13 at 4.55.11 PM.png

> Reduce Unordered memory needed for storing empty completed events
> -----------------------------------------------------------------
>
>                 Key: TEZ-3831
>                 URL: https://issues.apache.org/jira/browse/TEZ-3831
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Jonathan Eagles
>            Assignee: Jonathan Eagles
>         Attachments: Screen Shot 2017-09-13 at 4.55.11 PM.png
>
>
> the completedInputs blocking queue is used to store inputs for the UnorderedKVReader to consume. With Auto-reduce parallelism enabled and nearly all empty inputs, the reader can't prune the empty events from the blocking queue fast enough to keep up. In my scenario, an OOM occurred. 



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)