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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6199) Change PENDING_OPEN scope from pre-rpc open to OPENING to just post-rpc open to OPENING
Date Tue, 12 Jun 2012 01:02:43 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13293240#comment-13293240

Hadoop QA commented on HBASE-6199:

-1 overall.  Here are the results of testing the latest attachment 
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    +1 hadoop2.0.  The patch compiles against the hadoop 2.0 profile.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    -1 findbugs.  The patch appears to introduce 5 new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit

     -1 core tests.  The patch failed these unit tests:

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/2135//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/2135//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/2135//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-server.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/2135//console

This message is automatically generated.
> Change PENDING_OPEN scope from pre-rpc open to OPENING to just post-rpc open to OPENING
> ---------------------------------------------------------------------------------------
>                 Key: HBASE-6199
>                 URL: https://issues.apache.org/jira/browse/HBASE-6199
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: stack
>            Assignee: stack
>         Attachments: 6199v4.txt, pending_open.txt, pending_open2.txt, pending_open3.txt
> PENDING_OPEN currently is a murky state.  Its a master in-memory state with no corresponding
znode state that sits between OFFLINE and OPENING states.
> The OFFLINE state is set by the master when it goes to open a region.  OPENING is set
by the regionserver after its assumed control of a region and is moving it through the OPENING
process.  PENDING_OPEN currently spans the open rpc invocation.  This state is in place pre-open-rpc-invocation,
during open-rpc-invocation, and post-rpc-invocation until we get the OPENING callback. That
PENDING_OPEN covers this many different conditions effectively makes it unactionable.
> This issue proposes PENDING_OPEN only be in place post-rpc-invocation.  Now its meaning
is clear as the space between rpc-open-invocation and our receiving the callback which sets
RegionState to OPENING.  PENDING_OPEN becomes actionable too in that if a regionserver dies
post rpc-open-invocation, we know that we can reassign the region.
> See https://issues.apache.org/jira/browse/HBASE-6060?focusedCommentId=13292646&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13292646
for more discussion.

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