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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-2414) Enhance test suite to be able to specify distributed scenarios
Date Wed, 28 Apr 2010 06:36:32 GMT

     [ https://issues.apache.org/jira/browse/HBASE-2414?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

stack updated HBASE-2414:

    Attachment: testmaster-v14.txt

Attached patch should have sufficient vocabulary for writing tests that can repro recent rash
of issues.  It adds means of adding listeners to master events -- both before and after event
happens.  The before lets you put off the event.  it'll be requeued, added to the DelayQueue
(this happens currently in Master if an issue processing a RegionServerOperation, it gets
requeued to be tried again later).  The patch also adds to minihbasecluster simple means of
sending regionserver "events'.

Patch includes test that reproduces hbase-2428.  Let me add more unit tests for other issues.

> Enhance test suite to be able to specify distributed scenarios
> --------------------------------------------------------------
>                 Key: HBASE-2414
>                 URL: https://issues.apache.org/jira/browse/HBASE-2414
>             Project: Hadoop HBase
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 0.20.3
>            Reporter: Karthik Ranganathan
>            Assignee: stack
>            Priority: Blocker
>             Fix For: 0.20.5, 0.21.0
>         Attachments: directcluster.txt, master2.txt, testmaster-v11.patch, testmaster-v14.txt,
testmaster-v4.patch, testmaster-v5.patch, testmaster-v7.patch, testmaster-v8.patch
> We keep finding good cases that are reasonably hard to test, yet the test suite does
not encode these. 
> For example: 
> HBASE-2413 Master does not respect generation stamps, may result in meta getting permanently
> HBASE-2312 Possible data loss when RS goes into GC pause while rolling HLog
> I am sure there are many more such "scenarios" we should put into the unit tests. 

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