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https://issues.apache.org/jira/browse/ACCUMULO-271?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Keith Turner resolved ACCUMULO-271.
-----------------------------------
Resolution: Fixed
Assignee: Keith Turner
> WholeRowIterator may call hasTop on unseeked source
> ---------------------------------------------------
>
> Key: ACCUMULO-271
> URL: https://issues.apache.org/jira/browse/ACCUMULO-271
> Project: Accumulo
> Issue Type: Bug
> Reporter: Keith Turner
> Assignee: Keith Turner
> Fix For: 1.4.0
>
>
> A random walker failed while running the security test against 1.4. Saw the
> following :
> {noformat}
> 05 21:11:02,632 [randomwalk.Framework] ERROR: Error during random walk
> java.lang.Exception: Error running node Security.xml
> .
> .
> .
> Caused by: org.apache.thrift.TApplicationException: Internal error processing
> waitForTableOperation
> at
> org.apache.thrift.TApplicationException.read(TApplicationException.java:108)
> at
> org.apache.accumulo.core.master.thrift.MasterClientService$Client.recv_waitForTableOperation(MasterClientService.java:684)
> at
> org.apache.accumulo.core.master.thrift.MasterClientService$Client.waitForTableOperation(MasterClientService.java:665)
> .
> .
> .
> {noformat}
> Looked in the master log around that time and saw the following :
> {noformat}
> 05 21:11:02,560 [fate.Fate] WARN : Failed to execute Repo,
> tid=07a6674a2cad866e
> java.lang.RuntimeException:
> org.apache.accumulo.core.client.impl.AccumuloServerException: Error on server
> xxx.xxx.xxx.xxx:9997
> at
> org.apache.accumulo.core.client.impl.TabletServerBatchReaderIterator.hasNext(TabletServerBatchReaderIterator.java:188)
> at
> org.apache.accumulo.server.master.state.MetaDataTableScanner.hasNext(MetaDataTableScanner.java:93)
> at
> org.apache.accumulo.server.master.tableOps.CleanUp.isReady(DeleteTable.java:94)
> {noformat}
> Went to that tablet server and saw the following :
> {noformat}
> 05 21:11:02,523 [tabletserver.TabletServer] WARN : exception while doing
> multi-scan
> java.lang.IllegalStateException: never been seeked
> at
> org.apache.accumulo.core.iterators.WrappingIterator.hasTop(WrappingIterator.java:71)
> at
> org.apache.accumulo.core.iterators.user.VersioningIterator.hasTop(VersioningIterator.java:81)
> at
> org.apache.accumulo.core.iterators.user.WholeRowIterator.hasTop(WholeRowIterator.java:207)
> at
> org.apache.accumulo.server.master.state.TabletStateChangeIterator.consume(TabletStateChangeIterator.java:113)
> at
> org.apache.accumulo.core.iterators.SkippingIterator.seek(SkippingIterator.java:38)
> at
> org.apache.accumulo.core.iterators.system.SourceSwitchingIterator.readNext(SourceSwitchingIterator.java:118)
> at
> org.apache.accumulo.core.iterators.system.SourceSwitchingIterator.next(SourceSwitchingIterator.java:105)
> at
> org.apache.accumulo.server.tabletserver.Tablet.lookup(Tablet.java:1622)
> at
> org.apache.accumulo.server.tabletserver.Tablet.lookup(Tablet.java:1706)
> {noformat}
> Looking at the code I think the WholeRowIterator may call hasTop on its
> source iterator w/o seeking it sometimes. This is because its seek function
> may return w/o seeking the source iterator.
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