[jira] [Commented] (TEZ-3566) OOM because of too many DFSClient instances in TokenCache.obtainTokensForFileSystems

["TezQA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TEZ-3566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15801197#comment-15801197 ] 

TezQA commented on TEZ-3566:
----------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment
  http://issues.apache.org/jira/secure/attachment/12845772/TEZ-3566.02.patch
  against master revision c00c63c.

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new or modified test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version 3.0.1) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in .

Test results: https://builds.apache.org/job/PreCommit-TEZ-Build/2166//testReport/
Console output: https://builds.apache.org/job/PreCommit-TEZ-Build/2166//console

This message is automatically generated.

> OOM because of too many DFSClient instances in TokenCache.obtainTokensForFileSystems
> ------------------------------------------------------------------------------------
>
>                 Key: TEZ-3566
>                 URL: https://issues.apache.org/jira/browse/TEZ-3566
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Harish Jaiprakash
>            Assignee: Harish Jaiprakash
>         Attachments: TEZ-3566.01.patch, TEZ-3566.02.patch
>
>
> When FileSystem cache is disabled, invoking TokenCache.obtainTokensForFileSystems creates lot of FileSystem objects which are unique and stored in a hash set. This takes up lot of memory and causes OOM.



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