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From "Kumar Ravi (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8192) Fix unit test failures with IBM's JDK
Date Mon, 26 Mar 2012 15:24:28 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13238473#comment-13238473

Kumar Ravi commented on HADOOP-8192:

 I think it would be extremely useful to understand if CombineFileInputFormat's getSplits()
is working as designed -- Should the method  exit out of the loop as soon as all blocks are
accounted for. If so, the next question is - Is this is a testcase scenario issue? --  In
a production environment are there scenarios where a Datanode will contain all the blocks
in a cluster?

 We would like to make sure that we are not fixing a non-existent problem to pass a test case,
and inadvertently break the split functionality when it is working without issues. If this
just happens to be a behavior issue between two JVMs for a given scenario then it might be
more prudent to create separate test paths for each JVM. 

> Fix unit test failures with IBM's JDK
> -------------------------------------
>                 Key: HADOOP-8192
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8192
>             Project: Hadoop Common
>          Issue Type: Bug
>         Environment: java version "1.6.0"
> Java(TM) SE Runtime Environment (build pxi3260sr10-20111208_01(SR10))
> IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Linux x86-32 jvmxi3260sr10-20111207_96808
(JIT enabled, AOT enabled)
> J9VM - 20111207_096808
> JIT  - r9_20111107_21307ifx1
> GC   - 20110519_AA)
> JCL  - 20111104_02
>            Reporter: Devaraj Das
> Some tests fail with IBM's JDK. They are org.apache.hadoop.mapred.lib.TestCombineFileInputFormat,
org.apache.hadoop.mapreduce.lib.input.TestCombineFileInputFormat, org.apache.hadoop.streaming.TestStreamingBadRecords,
org.apache.hadoop.mapred.TestCapacityScheduler. This jira is to track fixing these.

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