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https://issues.apache.org/jira/browse/HBASE-5974?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14141121#comment-14141121
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Hudson commented on HBASE-5974:
-------------------------------
FAILURE: Integrated in HBase-0.94 #1413 (See
[https://builds.apache.org/job/HBase-0.94/1413/])
HBASE-11957 Backport to 0.94 HBASE-5974 Scanner retry behavior with RPC timeout
on next() seems incorrect. (Liu Shaohui original patch by Anoop Sam John)
(larsh: rev 8f9faabf579c02476acb791c145f34baf49ac8f5)
* src/main/java/org/apache/hadoop/hbase/regionserver/RegionScannerHolder.java
* src/test/java/org/apache/hadoop/hbase/client/TestClientScannerRPCTimeout.java
* src/main/java/org/apache/hadoop/hbase/util/JVMClusterUtil.java
* src/main/java/org/apache/hadoop/hbase/client/ClientScanner.java
* src/main/java/org/apache/hadoop/hbase/client/ScannerCallable.java
* src/main/java/org/apache/hadoop/hbase/ipc/HRegionInterface.java
* src/main/java/org/apache/hadoop/hbase/CallSequenceOutOfOrderException.java
* src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
> Scanner retry behavior with RPC timeout on next() seems incorrect
> -----------------------------------------------------------------
>
> Key: HBASE-5974
> URL: https://issues.apache.org/jira/browse/HBASE-5974
> Project: HBase
> Issue Type: Bug
> Components: Client, regionserver
> Affects Versions: 0.90.7, 0.92.1, 0.94.0, 0.95.2
> Reporter: Todd Lipcon
> Assignee: Anoop Sam John
> Priority: Critical
> Fix For: 0.95.0
>
> Attachments: 5974_94-V4.patch, 5974_trunk-V2.patch,
> 5974_trunk-V3.patch, 5974_trunk.patch, HBASE-5974_0.94.patch,
> HBASE-5974_94-V2.patch, HBASE-5974_94-V3.patch
>
>
> I'm seeing the following behavior:
> - set RPC timeout to a short value
> - call next() for some batch of rows, big enough so the client times out
> before the result is returned
> - the HConnectionManager stuff will retry the next() call to the same server.
> At this point, one of two things can happen: 1) the previous next() call will
> still be processing, in which case you get a LeaseException, because it was
> removed from the map during the processing, or 2) the next() call will
> succeed but skip the prior batch of rows.
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