[ https://issues.apache.org/jira/browse/TEZ-3831?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16165375#comment-16165375
]
Kuhu Shukla edited comment on TEZ-3831 at 9/13/17 10:16 PM:
------------------------------------------------------------
Thank you [~jeagles] for reporting this and the patch.
+1 . LGTM.
was (Author: kshukla):
+1 . binding. LGTM.
> 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, TEZ-3831.001.patch
>
>
> 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)
|