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From "Keith Turner (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (ACCUMULO-893) splitting and hold time are interacting badly
Date Thu, 14 Mar 2013 20:52:12 GMT

     [ https://issues.apache.org/jira/browse/ACCUMULO-893?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Keith Turner resolved ACCUMULO-893.
-----------------------------------

    Resolution: Duplicate

Asked Eric about this, he think it may have been caused by ACCUMULO-1062
                
> splitting and hold time are interacting badly
> ---------------------------------------------
>
>                 Key: ACCUMULO-893
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-893
>             Project: Accumulo
>          Issue Type: Bug
>          Components: tserver
>    Affects Versions: 1.4.2
>            Reporter: Eric Newton
>            Assignee: Keith Turner
>             Fix For: 1.5.0
>
>
> Testing on a medium sized cluster using the continuous ingest test.
> I pre-split the table and started ingest.  I got tired of waiting for the tablets to
split again so I lowered the split threshold to 100M.
> The tablet servers started minor compaction in preparation for the split; memory became
held.. and then nothing would happen until this error came up:
> {noformat}
> 2012-12-06 12:57:02,025 [thrift.TabletClientService$Processor] ERROR: tserver:r01n16
Internal error processing closeUpdate
> org.apache.accumulo.server.tabletserver.HoldTimeoutException: Commits are held
>         at org.apache.accumulo.server.tabletserver.TabletServerResourceManager.waitUntilCommitsAreEnabled(TabletServerResourceManager.java:386)
>         at org.apache.accumulo.server.tabletserver.TabletServer$ThriftClientHandler.flush(TabletServer.java:1469)
>         at org.apache.accumulo.server.tabletserver.TabletServer$ThriftClientHandler.closeUpdate(TabletServer.java:1610)
>         at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>         at org.apache.accumulo.cloudtrace.instrument.thrift.TraceWrap$1.invoke(TraceWrap.java:59)
>         at $Proxy2.closeUpdate(Unknown Source)
>         at org.apache.accumulo.core.tabletserver.thrift.TabletClientService$Processor$closeUpdate.process(TabletClientService.java:2338)
>         at org.apache.accumulo.core.tabletserver.thrift.TabletClientService$Processor.process(TabletClientService.java:2037)
>         at org.apache.accumulo.server.util.TServerUtils$TimedProcessor.process(TServerUtils.java:154)
>         at org.apache.thrift.server.TNonblockingServer$FrameBuffer.invoke(TNonblockingServer.java:631)
>         at org.apache.accumulo.server.util.TServerUtils$THsHaServer$Invocation.run(TServerUtils.java:202)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>         at org.apache.accumulo.core.util.LoggingRunnable.run(LoggingRunnable.java:34)
>         at java.lang.Thread.run(Thread.java:662)
> {noformat}
> The tservers appeared to make no progress on splitting until I stopped the ingesters.

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