[hbase] Parameters for TestDFSAbort too aggressive
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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
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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