hadoop-yarn-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1183) MiniYARNCluster shutdown takes several minutes intermittently
Date Thu, 12 Sep 2013 15:38:54 GMT

    [ https://issues.apache.org/jira/browse/YARN-1183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13765538#comment-13765538
] 

Karthik Kambatla commented on YARN-1183:
----------------------------------------

Patch looks mostly good. Few comments:
# The ConcurrentHashMap should be initialized with a smaller value for concurrencyLevel (2?),
and may be initialCapacity too.
# For the keys in the map, we should probably use ApplicationID instead of trackingUrl as
the trackingUrl can change by the time the app completes.
# Rename waitAppMastersToFinish to waitForAppMastersToFinish?
                
> MiniYARNCluster shutdown takes several minutes intermittently
> -------------------------------------------------------------
>
>                 Key: YARN-1183
>                 URL: https://issues.apache.org/jira/browse/YARN-1183
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Andrey Klochkov
>         Attachments: YARN-1183.patch
>
>
> As described in MAPREDUCE-5501 sometimes M/R tests leave MRAppMaster java processes living
for several minutes after successful completion of the corresponding test. There is a concurrency
issue in MiniYARNCluster shutdown logic which leads to this. Sometimes RM stops before an
app master sends it's last report, and then the app master keeps retrying for >6 minutes.
In some cases it leads to failures in subsequent tests, and it affects performance of tests
as app masters eat resources.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message