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https://issues.apache.org/jira/browse/HBASE-7904?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13619229#comment-13619229
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stack commented on HBASE-7904:
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bq. Do you happen to know what this incompatibility was (and against which
version) ?
[~sseth]
No. This issue started out as an incompability issue (see original [~ted_yu]
comments at head of issue) and then ended w/ some configuration manipulations
that seem gratiuitous. I ask the author what fixed the issue and I get that
they "think" the config. manipulations are all that is necessary. I have spent
a bunch of time trying to follow what is going on here, but gave up, and +1'd
it as a means of putting the issue behind us since the patch seemed relatively
harmless.
bq. As an example, can TestTableMapReduce run in parallel with
TestHFileOutputFormat ?, or can multiple tests within TestTableMapReduce run in
parallel, or something else.
Yes, hbase tests can be run in parallel: e.g. TestTableMapReduce and
TestHFileOutputFormat run at same time. Our surefire runs our test suite by
firing off N JVMs each running a distinct, long-running test.
What we do not do is set up a mini mr cluster and then run many unit tests
against.
bq. I exchanged a few emails with Nicolas who was the author of
CompoundConfiguration.
[~ted_yu] And you say nothing in here about it? Why do it in private? They
call it open source for a reason.
Suggest we revert this patch. Seems broke that CPs see another config. because
"Chane to HRegion to not use a 'CompoundConfiguration' when talking to HDFS,
due to the inability to change the RPC engine with CompoundConfiguration.
(Causes several *SecureLoad tests to hang)" according to
https://issues.apache.org/jira/browse/YARN-449 (a conclusion that is absent
here).
> Make mapreduce jobs pass based on 2.0.4-alpha
> ---------------------------------------------
>
> Key: HBASE-7904
> URL: https://issues.apache.org/jira/browse/HBASE-7904
> Project: HBase
> Issue Type: Task
> Reporter: Ted Yu
> Assignee: Ted Yu
> Priority: Critical
> Fix For: 0.95.0, 0.98.0
>
> Attachments: 7904-addendum.txt, 7904.txt, 7904-v2-hadoop-2.0.txt,
> 7904-v2.txt, 7904-v4-hadoop-2.0.txt, 7904-v4.txt, 7904-v4.txt,
> 7904-v5-hadoop-2.0.txt, 7904-v5.txt, 7904-v6-hadoop-2.0.txt,
> 7904-v7-hadoop-2.0.txt, 7904-v8-hadoop-2.0.txt, 7904-v8.txt,
> 7904-v9-hadoop-2.0.txt, 7904-v9.txt, hbase-7904-v3.txt
>
>
> 2.0.3-alpha has been released.
> We should upgrade the dependency.
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