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From "Eric Newton (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (ACCUMULO-1867) Split failed during conditional randomwalk test
Date Tue, 19 Nov 2013 14:47:21 GMT

     [ https://issues.apache.org/jira/browse/ACCUMULO-1867?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eric Newton resolved ACCUMULO-1867.
-----------------------------------

    Resolution: Fixed

> Split failed during conditional randomwalk test
> -----------------------------------------------
>
>                 Key: ACCUMULO-1867
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1867
>             Project: Accumulo
>          Issue Type: Bug
>            Reporter: Keith Turner
>            Assignee: Eric Newton
>            Priority: Blocker
>             Fix For: 1.6.0
>
>
> I left the conditional random walk test running overnight against 1.6.0-SNAPSHOT configured
to use two namenodes.   After running for a few hours   a client saw a split operating failand
I saw the following corresponding error message in the tserver logs.
> {noformat}
> 2013-11-08 12:31:59,227 [util.FileUtil] DEBUG: Too many indexes (33) to open at once
for null null, reducing in tmpDir = /accumulo-1.6/tmp/idxReduce_1116774712
> 2013-11-08 12:31:59,369 [thrift.ProcessFunction] ERROR: Internal error processing splitTablet
> java.lang.IllegalArgumentException: Wrong FS: hdfs://nn2:9001/accumulo-1.6/tables/2/t-0000ew3/F0000ex7.rf,
expected: hdfs://nn1:6093
>         at org.apache.hadoop.fs.FileSystem.checkPath(FileSystem.java:381)
>         at org.apache.hadoop.hdfs.DistributedFileSystem.getPathName(DistributedFileSystem.java:129)
>         at org.apache.hadoop.hdfs.DistributedFileSystem.open(DistributedFileSystem.java:154)
>         at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:427)
>         at org.apache.accumulo.core.file.blockfile.impl.CachableBlockFile$Reader.getBCFile(CachableBlockFile.java:256)
>         at org.apache.accumulo.core.file.blockfile.impl.CachableBlockFile$Reader.access$000(CachableBlockFile.java:143)
>         at org.apache.accumulo.core.file.blockfile.impl.CachableBlockFile$Reader$MetaBlockLoader.get(CachableBlockFile.java:212)
>         at org.apache.accumulo.core.file.blockfile.impl.CachableBlockFile$Reader.getBlock(CachableBlockFile.java:313)
>         at org.apache.accumulo.core.file.blockfile.impl.CachableBlockFile$Reader.getMetaBlock(CachableBlockFile.java:367)
>         at org.apache.accumulo.core.file.blockfile.impl.CachableBlockFile$Reader.getMetaBlock(CachableBlockFile.java:143)
>         at org.apache.accumulo.core.file.rfile.RFile$Reader.<init>(RFile.java:825)
>         at org.apache.accumulo.core.file.rfile.RFileOperations.openIndex(RFileOperations.java:63)
>         at org.apache.accumulo.core.file.DispatchingFileFactory.openIndex(FileOperations.java:66)
>         at org.apache.accumulo.server.util.FileUtil.reduceFiles(FileUtil.java:135)
>         at org.apache.accumulo.server.util.FileUtil.estimatePercentageLTE(FileUtil.java:207)
>         at org.apache.accumulo.tserver.Tablet.split(Tablet.java:3527)
>         at org.apache.accumulo.tserver.TabletServer.splitTablet(TabletServer.java:2648)
>         at org.apache.accumulo.tserver.TabletServer.access$1600(TabletServer.java:237)
>         at org.apache.accumulo.tserver.TabletServer$ThriftClientHandler.splitTablet(TabletServer.java:2095)
>         at sun.reflect.GeneratedMethodAccessor34.invoke(Unknown Source)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>         at org.apache.accumulo.trace.instrument.thrift.TraceWrap$1.invoke(TraceWrap.java:63)
>         at $Proxy10.splitTablet(Unknown Source)
>         at org.apache.accumulo.core.tabletserver.thrift.TabletClientService$Processor$splitTablet.getResult(TabletClientService.java:2531)
>         at org.apache.accumulo.core.tabletserver.thrift.TabletClientService$Processor$splitTablet.getResult(TabletClientService.java:2515)
>         at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:39)
>         at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:39)
>         at org.apache.accumulo.server.util.TServerUtils$TimedProcessor.process(TServerUtils.java:159)
>         at org.apache.thrift.server.AbstractNonblockingServer$FrameBuffer.invoke(AbstractNonblockingServer.java:478)
>         at org.apache.accumulo.server.util.TServerUtils$THsHaServer$Invocation.run(TServerUtils.java:214)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>         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:662)
> {noformat}
> nn1 is the default namenode.  The "Too many indexes" message may be important.  That
message indicates the split code entered special code that handles tablets w/ lots of files.



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