[
https://issues.apache.org/jira/browse/TEZ-3831?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16165357#comment-16165357
]
Jonathan Eagles commented on TEZ-3831:
--------------------------------------
!https://issues.apache.org/jira/secure/attachment/12886965/Screen%20Shot%202017-09-13%20at%204.55.11%20PM.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)
