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https://issues.apache.org/jira/browse/HBASE-3666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13008117#comment-13008117
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Todd Lipcon commented on HBASE-3666:
------------------------------------
checkOpen in this case is on the HRegionServer, not the region, so I think it's
only on shutdown
> TestScannerTimeout fails occasionally
> -------------------------------------
>
> Key: HBASE-3666
> URL: https://issues.apache.org/jira/browse/HBASE-3666
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.90.1
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Fix For: 0.90.2
>
> Attachments: hbase-3666.txt
>
>
> If I loop TestScannerTimeout, it eventually fails with:
> org.apache.hadoop.hbase.regionserver.LeaseException:
> org.apache.hadoop.hbase.regionserver.LeaseException: lease
> '-4526340287831625207' does not exist
> at
> org.apache.hadoop.hbase.regionserver.Leases.cancelLease(Leases.java:209)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.next(HRegionServer.java:1816)
> ...
> at
> org.apache.hadoop.hbase.client.ScannerCallable.call(ScannerCallable.java:83)
> at
> org.apache.hadoop.hbase.client.ScannerCallable.call(ScannerCallable.java:38)
> at
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getRegionServerWithRetries(HConnectionManager.java:1003)
> at
> org.apache.hadoop.hbase.client.HTable$ClientScanner.next(HTable.java:1103)
> at
> org.apache.hadoop.hbase.client.HTable$ClientScanner.next(HTable.java:1175)
> at
> org.apache.hadoop.hbase.client.TestScannerTimeout.test2772(TestScannerTimeout.java:133)
> I think the issue is a race where at the top of the function, the scanner
> does exist, but by the time it gets to cancelLease, it has timed out.
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