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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1870) [hbase] Parameters for TestDFSAbort too aggressive
Date Tue, 11 Sep 2007 01:08:29 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1870?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12526322
] 

Hadoop QA commented on HADOOP-1870:
-----------------------------------

-1, build or testing failed

2 attempts failed to build and test the latest attachment http://issues.apache.org/jira/secure/attachment/12365507/patch.txt
against trunk revision r574389.

Test results:   http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/727/testReport/
Console output: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/727/console

Please note that this message is automatically generated and may represent a problem with
the automation system and not the patch.

> [hbase] Parameters for TestDFSAbort too aggressive
> --------------------------------------------------
>
>                 Key: HADOOP-1870
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1870
>             Project: Hadoop
>          Issue Type: Bug
>          Components: contrib/hbase
>    Affects Versions: 0.15.0
>            Reporter: Jim Kellerman
>            Assignee: Jim Kellerman
>             Fix For: 0.15.0
>
>         Attachments: patch.txt
>
>
> The parameter settings for client retries both at the Hadoop IPC level and at the HBase
client level seem to aggressive. Even though lucene.zones.apache.org is a quad CPU machine,
it routinely displays a load average of ~8. It runs much slower than any of our test machines:
Core 2 duo MacBook Pro (running Linux or MacOs), Dual dual-core opterons (Linux),  Core 2
(Windows) and even a PentiumM (Windows).
> Consequently, tests that run just fine in the environments listed above sometimes fail
on lucene.zones. 
> It is unclear if this is due to thread scheduling differences between Solaris and Linux/Windows
or in the respective JVM's.
> To make some tests run reliably in the Hudson build environment, we sometimes have to
increase retries and timeouts, which we set aggressively so that the tests will run faster.
> If that is what it takes to prevent Hudson build failures, then so be it. The tests may
take longer to run, but if that is the tradeoff to achieve reliability, then so be it.

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