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From "Ted Yu (Assigned) (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HBASE-4936) Cached HRegionInterface connections crash when getting UnknownHost exceptions
Date Sun, 04 Dec 2011 04:28:39 GMT

     [ https://issues.apache.org/jira/browse/HBASE-4936?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ted Yu reassigned HBASE-4936:
-----------------------------

    Assignee: Andrei Dragomir
    
> 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.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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