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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-9969) Unreasonable memory requirements to complete examples/batch/WordCount
Date Fri, 03 Aug 2018 07:15:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-9969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16567862#comment-16567862
] 

ASF GitHub Bot commented on FLINK-9969:
---------------------------------------

tillrohrmann commented on a change in pull request #6479: [FLINK-9969][batch] Dispose InMemorySorters
created by the UnilateralSortMerger
URL: https://github.com/apache/flink/pull/6479#discussion_r207459523
 
 

 ##########
 File path: flink-runtime/src/test/java/org/apache/flink/runtime/operators/sort/CombiningUnilateralSortMergerITCase.java
 ##########
 @@ -47,9 +37,20 @@
 import org.apache.flink.runtime.util.ReusingKeyGroupedIterator;
 import org.apache.flink.util.Collector;
 import org.apache.flink.util.MutableObjectIterator;
+import org.apache.flink.util.TestLogger;
+
 import org.junit.After;
+import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Hashtable;
+import java.util.Iterator;
+import java.util.NoSuchElementException;
 
 
 Review comment:
   You're right it's unrelated. I will remove it from the commit.

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> Unreasonable memory requirements to complete examples/batch/WordCount
> ---------------------------------------------------------------------
>
>                 Key: FLINK-9969
>                 URL: https://issues.apache.org/jira/browse/FLINK-9969
>             Project: Flink
>          Issue Type: Bug
>          Components: ResourceManager
>    Affects Versions: 1.5.0, 1.5.1, 1.5.2, 1.6.0
>            Reporter: Piotr Nowojski
>            Assignee: Till Rohrmann
>            Priority: Blocker
>              Labels: pull-request-available
>             Fix For: 1.5.3, 1.6.0
>
>         Attachments: yarn_logs
>
>
> setup on AWS EMR:
>  * 5 worker nodes (m4.4xlarge nodes) 
>  * 1 master node (m4.large)
> following command fails with out of memory errors:
> {noformat}
> export HADOOP_CLASSPATH=`hadoop classpath`
> ./bin/flink run -m yarn-cluster -p 20 -yn 5 -ys 4 -ytm 16000 examples/batch/WordCount.jar{noformat}
> Only increasing memory over 17.2GB example completes. At the same time after disabling
flip6 following command succeeds:
> {noformat}
> export HADOOP_CLASSPATH=`hadoop classpath`
> ./bin/flink run -m yarn-cluster -p 20 -yn 5 -ys 4 -ytm 1000 examples/batch/WordCount.jar{noformat}



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