[
https://issues.apache.org/jira/browse/ACCUMULO-2082?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13855802#comment-13855802
]
Josh Elser edited comment on ACCUMULO-2082 at 12/23/13 7:29 PM:
----------------------------------------------------------------
Looking over this, it's not obvious to me yet what's happening here. My first
hunch was that there was another compaction that tried to run over an
overlapping set of files for the given Tablet. I've ruled that out, however,
because of the check against the {{majorCompactionInProgress}} member of
{{Tablet}}. It doesn't appear possible to run multiple compactions over the
same Tablet (even if the compaction files are disjoint).
was (Author: elserj):
Looking over this, it's not obvious to me yet what's happening here. My first
hunch was that there was another compaction that tried to run over an
overlapping set of files for the given Tablet. I've ruled that out, however,
because of the check against the {{majocCompactionInProgress} member of
{{Tablet}}. It doesn't appear possible to run multiple compactions over the
same Tablet (even if the compaction files are disjoint).
> Major compacting files not empty
> --------------------------------
>
> Key: ACCUMULO-2082
> URL: https://issues.apache.org/jira/browse/ACCUMULO-2082
> Project: Accumulo
> Issue Type: Bug
> Reporter: Josh Elser
>
> Saw this during a randomwalk:
> {noformat}
> MajC Failed, message = Major compacting files not empty
> [hdfs://nameservice/accumulo/tables/p/t-0001pfx/C0001qir.rf,
> hdfs://nameservice/accumulo/tables/p/t-0001pfx/C0001qip.rf,
> hdfs://nameservice/accumulo/tables/p/b-0001qh4/I0001qh5.rf,
> hdfs://nameservice/accumulo/tables/p/b-0001qgt/I0001qgv.rf,
> hdfs://nameservice/accumulo/tables/p/b-0001qg5/I0001qg6.rf,
> hdfs://nameservice/accumulo/tables/p/b-0001qem/I0001qeo.rf,
> hdfs://nameservice/accumulo/tables/p/b-0001qgj/I0001qgk.rf,
> hdfs://nameservice/accumulo/tables/p/t-0001pfx/C0001qis.rf,
> hdfs://nameservice/accumulo/tables/p/b-0001qga/I0001qgb.rf,
> hdfs://nameservice/accumulo/tables/p/t-0001pfx/A0001pg9.rf]
> java.lang.IllegalStateException: Major compacting files not empty
> [hdfs://nameservice/accumulo/tables/p/t-0001pfx/C0001qir.rf,
> hdfs://nameservice/accumulo/tables/p/t-0001pfx/C0001qip.rf,
> hdfs://nameservice/accumulo/tables/p/b-0001qh4/I0001qh5.rf,
> hdfs://nameservice/accumulo/tables/p/b-0001qgt/I0001qgv.rf,
> hdfs://nameservice/accumulo/tables/p/b-0001qg5/I0001qg6.rf,
> hdfs://nameservice/accumulo/tables/p/b-0001qem/I0001qeo.rf,
> hdfs://nameservice/accumulo/tables/p/b-0001qgj/I0001qgk.rf,
> hdfs://nameservice/accumulo/tables/p/t-0001pfx/C0001qis.rf,
> hdfs://nameservice/accumulo/tables/p/b-0001qga/I0001qgb.rf,
> hdfs://nameservice/accumulo/tables/p/t-0001pfx/A0001pg9.rf]
> at
> org.apache.accumulo.tserver.Tablet$DatafileManager.reserveMajorCompactingFiles(Tablet.java:933)
> at
> org.apache.accumulo.tserver.Tablet._majorCompact(Tablet.java:3187)
> at
> org.apache.accumulo.tserver.Tablet.majorCompact(Tablet.java:3371)
> at
> org.apache.accumulo.tserver.Tablet.access$4700(Tablet.java:168)
> at
> org.apache.accumulo.tserver.Tablet$CompactionRunner.run(Tablet.java:2849)
> at
> org.apache.accumulo.trace.instrument.TraceRunnable.run(TraceRunnable.java:47)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at
> org.apache.accumulo.trace.instrument.TraceRunnable.run(TraceRunnable.java:47)
> at
> org.apache.accumulo.core.util.LoggingRunnable.run(LoggingRunnable.java:34)
> at java.lang.Thread.run(Thread.java:744)
> {noformat}
> I don't actually know if it's a problem. A first read over that section of
> the code wasn't obvious to me one way or the other.
--
This message was sent by Atlassian JIRA
(v6.1.5#6160)
