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https://issues.apache.org/jira/browse/FLINK-2504?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14747333#comment-14747333
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Stephan Ewen commented on FLINK-2504:
-------------------------------------
The occasional "Cannot allocate memory" means that the VM or container has not
enough RAM to do the I/O operation due to Java needing off-heap memory for that.
We could try to reduce the heap size of the JVM, leaving more memory unused.
Otherwise, we cannot influence this...
> ExternalSortLargeRecordsITCase.testSortWithLongAndShortRecordsMixed failed
> spuriously
> -------------------------------------------------------------------------------------
>
> Key: FLINK-2504
> URL: https://issues.apache.org/jira/browse/FLINK-2504
> Project: Flink
> Issue Type: Bug
> Reporter: Till Rohrmann
> Priority: Critical
> Labels: test-stability
>
> The test
> {{ExternalSortLargeRecordsITCase.testSortWithLongAndShortRecordsMixed}}
> failed in one of my Travis builds:
> https://travis-ci.org/tillrohrmann/flink/jobs/74881883
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