Ferenc Csaky created FLINK-29707:
------------------------------------
Summary: Fix possible comparator violation for "flink list"
Key: FLINK-29707
URL: https://issues.apache.org/jira/browse/FLINK-29707
Project: Flink
Issue Type: Bug
Components: Command Line Client
Affects Versions: 1.16.0
Reporter: Ferenc Csaky
For the {{list}} CLI option, the code that prints the jobs, there is a
{{startTimeComparator}} definition, which orders the jobs and it is done this
way:
{code:java}
Comparator<JobStatusMessage> startTimeComparator =
(o1, o2) -> (int) (o1.getStartTime() - o2.getStartTime());
{code}
In some rare situation this can lead to this:
{code:java}
2022-10-19 09:58:11,690 ERROR org.apache.flink.client.cli.CliFrontend
[] - Error while running the command.
java.lang.IllegalArgumentException: Comparison method violates its general
contract!
at java.util.TimSort.mergeLo(TimSort.java:777) ~[?:1.8.0_312]
at java.util.TimSort.mergeAt(TimSort.java:514) ~[?:1.8.0_312]
at java.util.TimSort.mergeForceCollapse(TimSort.java:457) ~[?:1.8.0_312]
at java.util.TimSort.sort(TimSort.java:254) ~[?:1.8.0_312]
at java.util.Arrays.sort(Arrays.java:1512) ~[?:1.8.0_312]
at java.util.ArrayList.sort(ArrayList.java:1464) ~[?:1.8.0_312]
at java.util.stream.SortedOps$RefSortingSink.end(SortedOps.java:392)
~[?:1.8.0_312]
at java.util.stream.Sink$ChainedReference.end(Sink.java:258)
~[?:1.8.0_312]
at java.util.stream.Sink$ChainedReference.end(Sink.java:258)
~[?:1.8.0_312]
at
java.util.stream.SortedOps$SizedRefSortingSink.end(SortedOps.java:363)
~[?:1.8.0_312]
at
java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:483)
~[?:1.8.0_312]
at
java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
~[?:1.8.0_312]
at
java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
~[?:1.8.0_312]
at
java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
~[?:1.8.0_312]
at
java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
~[?:1.8.0_312]
at
java.util.stream.ReferencePipeline.forEachOrdered(ReferencePipeline.java:490)
~[?:1.8.0_312]
at
org.apache.flink.client.cli.CliFrontend.printJobStatusMessages(CliFrontend.java:574)
{code}
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