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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7502) TestScannerTimeout fails on snapshot branch
Date Sun, 06 Jan 2013 21:42:12 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7502?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13545503#comment-13545503
] 

Lars Hofhansl commented on HBASE-7502:
--------------------------------------

test3686a also fails occasionally in 0.94 and trunk. I just increased the scanning timeout
to 15000 (from 10000)... But the race you mention might have been the cause there too.
                
> TestScannerTimeout fails on snapshot branch
> -------------------------------------------
>
>                 Key: HBASE-7502
>                 URL: https://issues.apache.org/jira/browse/HBASE-7502
>             Project: HBase
>          Issue Type: Bug
>          Components: test
>    Affects Versions: hbase-7290
>            Reporter: Himanshu Vashishtha
>            Assignee: Himanshu Vashishtha
>             Fix For: hbase-7290
>
>         Attachments: HBASE-7502-v1.patch
>
>
> TestScannerTimeout#test3686a fails consistently on snapshot branch. This is because there
is an increase in the number of watches on the rs znode and its deletion takes more time now.
The repercussion is that when test3686a starts, it ensures that there are two regionservers
and it counts the aborted regionserver as a live one. While processing, it kills one of its
server, and also the znode of the previously aborted server expires. Overall effect is there
are no regionservers now, and client hangs.
> {code}
> Error Message
> test timed out after 300000 milliseconds
> Stacktrace
> java.lang.Exception: test timed out after 300000 milliseconds
> at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.close(HConnectionManager.java:1769)
> at org.apache.hadoop.hbase.client.HTable.close(HTable.java:961)
> at org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:180)
> at org.apache.hadoop.hbase.client.MetaScanner.access$000(MetaScanner.java:54)
> at org.apache.hadoop.hbase.client.MetaScanner$1.connect(MetaScanner.java:133)
> at org.apache.hadoop.hbase.client.MetaScanner$1.connect(MetaScanner.java:130)
> at org.apache.hadoop.hbase.client.HConnectionManager.execute(HConnectionManager.java:360)
> {code}

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