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Posted to issues@hbase.apache.org by "Hudson (JIRA)" <ji...@apache.org> on 2012/11/04 18:32:17 UTC
[jira] [Commented] (HBASE-5974) Scanner retry behavior with RPC
timeout on next() seems incorrect
[ https://issues.apache.org/jira/browse/HBASE-5974?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13490229#comment-13490229 ]
Hudson commented on HBASE-5974:
-------------------------------
Integrated in HBase-TRUNK-on-Hadoop-2.0.0 #248 (See [https://builds.apache.org/job/HBase-TRUNK-on-Hadoop-2.0.0/248/])
HBASE-7070 Scanner may retry forever after HBASE-5974 (Revision 1405107)
Result = FAILURE
stack :
Files :
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/client/ClientScanner.java
* /hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestClientScannerRPCTimeout.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, 0.96.0
> Reporter: Todd Lipcon
> Assignee: Anoop Sam John
> Priority: Critical
> Fix For: 0.96.0
>
> Attachments: 5974_94-V4.patch, 5974_trunk.patch, 5974_trunk-V2.patch, 5974_trunk-V3.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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