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https://issues.apache.org/jira/browse/FLINK-1561?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14324424#comment-14324424
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ASF GitHub Bot commented on FLINK-1561:
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Github user rmetzger commented on the pull request:
https://github.com/apache/flink/pull/412#issuecomment-74700668
+1
> Improve build server robustness by not reusing JVMs in integration tests
> ------------------------------------------------------------------------
>
> Key: FLINK-1561
> URL: https://issues.apache.org/jira/browse/FLINK-1561
> Project: Flink
> Issue Type: Improvement
> Components: Build System
> Affects Versions: 0.9
> Reporter: Stephan Ewen
> Assignee: Stephan Ewen
> Fix For: 0.9
>
>
> Right now, JVM forks are reused across unit and integration tests. While it
> makes a lot of sense for the very quick unit tests, the integration tests
> benefit less.
> We also see spurious JVM failures in the integration tests that are most
> likely related to JVM issues. An example is the trace below:
> {code}
> java.io.IOException: Cannot allocate memory
> at sun.nio.ch.FileDispatcherImpl.write0(Native Method)
> at sun.nio.ch.FileDispatcherImpl.write(FileDispatcherImpl.java:60)
> at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)
> at sun.nio.ch.IOUtil.write(IOUtil.java:65)
> at sun.nio.ch.FileChannelImpl.write(FileChannelImpl.java:205)
> at
> org.apache.flink.runtime.io.disk.iomanager.SegmentWriteRequest.write(AsynchronousFileIOChannel.java:270)
> at
> org.apache.flink.runtime.io.disk.iomanager.IOManagerAsync$WriterThread.run(IOManagerAsync.java:440)
> {code}
> I think we can improve reliability of Travis tests by not reusing forks for
> integration tests.
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