[Swift-devel] fatal coaster error

[Glen Hocky]

Does anyone know what this error signifies? it happens after many
successful completed tasks, as you will see, and causes the whole swift run
to die. This is on Midway with
*Swift trunk swift-r6095 cog-r3524*
*
*
Thanks,
Glen

Progress:  time: Fri, 14 Dec 2012 17:11:29 +0000  Selecting site:476
 Submitted:361  Active:138  Checking status:1  Finished successfully:2096
CoasterService fatal error:
Exception caught in block processor
java.lang.IllegalArgumentException: Comparison method violates its general
contract!
        at java.util.TimSort.mergeLo(TimSort.java:747)
        at java.util.TimSort.mergeAt(TimSort.java:483)
        at java.util.TimSort.mergeCollapse(TimSort.java:410)
        at java.util.TimSort.sort(TimSort.java:214)
        at java.util.TimSort.sort(TimSort.java:173)
        at java.util.Arrays.sort(Arrays.java:659)
        at java.util.Collections.sort(Collections.java:217)
        at
org.globus.cog.abstraction.coaster.service.job.manager.BlockQueueProcessor.removeIdleBlocks(BlockQueueProcessor.java:436)
        at
org.globus.cog.abstraction.coaster.service.job.manager.BlockQueueProcessor.updatePlan(BlockQueueProcessor.java:728)
        at
org.globus.cog.abstraction.coaster.service.job.manager.BlockQueueProcessor.run(BlockQueueProcessor.java:139)
Exception caught in block processor
java.lang.IllegalArgumentException: Comparison method violates its general
contract!
        at java.util.TimSort.mergeLo(TimSort.java:747)
        at java.util.TimSort.mergeAt(TimSort.java:483)
        at java.util.TimSort.mergeCollapse(TimSort.java:410)
        at java.util.TimSort.sort(TimSort.java:214)
        at java.util.TimSort.sort(TimSort.java:173)
        at java.util.Arrays.sort(Arrays.java:659)
        at java.util.Collections.sort(Collections.java:217)
        at
org.globus.cog.abstraction.coaster.service.job.manager.BlockQueueProcessor.removeIdleBlocks(BlockQueueProcessor.java:436)
        at
org.globus.cog.abstraction.coaster.service.job.manager.BlockQueueProcessor.updatePlan(BlockQueueProcessor.java:728)
        at
org.globus.cog.abstraction.coaster.service.job.manager.BlockQueueProcessor.run(BlockQueueProcessor.java:139)
Progress:  time: Fri, 14 Dec 2012 17:11:31 +0000  Selecting site:475
 Submitted:361  Active:138  Finished successfully:2097  Failed but can
retry:1
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