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https://issues.apache.org/jira/browse/HADOOP-1870?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12526323
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Jim Kellerman commented on HADOOP-1870:
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Two build attempts failed on Hudson:
- The first build failed in TestDecommission (so no contrib tests were run).
- The second build failed in TestBatchUpdate
Neither of these tests are related to this change in any way. In the second
build pass, when the contrib tests were run, TestDFSAbort was successful (and
had failed previously in Hudson)
> [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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