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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4936) Cached HRegionInterface connections crash when getting UnknownHost exceptions
Date Sun, 04 Dec 2011 09:11:39 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4936?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13162321#comment-13162321
] 

Hadoop QA commented on HBASE-4936:
----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12506023/HBASE-4936-v2.patch
  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 javadoc.  The javadoc tool appears to have generated -160 warning messages.

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

    -1 findbugs.  The patch appears to introduce 71 new Findbugs (version 1.3.9) warnings.

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

     -1 core tests.  The patch failed these unit tests:
                       org.apache.hadoop.hbase.client.TestAdmin
                  org.apache.hadoop.hbase.replication.TestReplication
                  org.apache.hadoop.hbase.client.TestInstantSchemaChange

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/440//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/440//artifact/trunk/patchprocess/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/440//console

This message is automatically generated.
                
> Cached HRegionInterface connections crash when getting UnknownHost exceptions
> -----------------------------------------------------------------------------
>
>                 Key: HBASE-4936
>                 URL: https://issues.apache.org/jira/browse/HBASE-4936
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 0.92.0
>            Reporter: Andrei Dragomir
>            Assignee: Andrei Dragomir
>         Attachments: HBASE-4936-v2.patch, HBASE-4936.patch
>
>
> This isssue is unlikely to come up in a cluster test case. However, for development,
the following thing happens: 
> 1. Start the HBase cluster locally, on network A (DNS A, etc)
> 2. The region locations are cached using the hostname (mycomputer.company.com, 211.x.y.z
- real ip)
> 3. Change network location (go home)
> 4. Start the HBase cluster locally. My hostname / ips are not different (mycomputer,
192.168.0.130 - new ip)
> If the region locations have been cached using the hostname, there is an UnknownHostException
in CatalogTracker.getCachedConnection(ServerName sn), uncaught in the catch statements. The
server will crash constantly. 
> The error should be caught and not rethrown, so that the cached connection expires normally.


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