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From "Jonathan Gray (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HBASE-3282) Need to retain DeadServers to ensure we don't allow previously expired RS instances to rejoin cluster
Date Mon, 29 Nov 2010 21:05:11 GMT

     [ https://issues.apache.org/jira/browse/HBASE-3282?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jonathan Gray resolved HBASE-3282.
----------------------------------

      Resolution: Fixed
    Hadoop Flags: [Reviewed]

Committed to branch and trunk after verifying unit tests pass.  Thanks for review stack.

> Need to retain DeadServers to ensure we don't allow previously expired RS instances to
rejoin cluster
> -----------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-3282
>                 URL: https://issues.apache.org/jira/browse/HBASE-3282
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 0.90.0
>            Reporter: Jonathan Gray
>            Assignee: Jonathan Gray
>             Fix For: 0.90.0, 0.92.0
>
>         Attachments: HBASE-3282-v4.patch
>
>
> Currently we clear a server from the deadserver set once we finish processing it's shutdown.
 However, certain circumstances (network partitions, race conditions) could lead to the RS
not doing a check-in until after the shutdown has been processed.  As-is, this RS will now
be let back in to the cluster rather than rejected with YouAreDeadException.
> We should hang on to the dead servers so we always reject them.
> One concern is that the set will grow indefinitely.  One recommendation by stack is to
use SoftReferences.

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