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From "Jim Kellerman (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-1960) [hbase] If a region server cannot talk to the master after several attempts, it should shut itself down
Date Tue, 02 Oct 2007 00:20:50 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-1960?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Jim Kellerman updated HADOOP-1960:

    Attachment: patch.txt

- New test

- Add getter that returns the HMaster object

- Add check for scanner == null before trying to close it

- Enclose test body in try catch block so that exceptions can be
  dumped to the console at the point in the test where they occur.

- If unable to communicate with the master for more than the lease
  timeout interval abort server.

- Add abort method
- If aborting,  ignores region server reports for 1 1/2 times lease period

> [hbase] If a region server cannot talk to the master after several attempts, it should
shut itself down
> -------------------------------------------------------------------------------------------------------
>                 Key: HADOOP-1960
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1960
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: contrib/hbase
>    Affects Versions: 0.15.0
>            Reporter: Jim Kellerman
>            Assignee: Jim Kellerman
>             Fix For: 0.15.0
>         Attachments: patch.txt
> If a region server cannot contact the master after a configurable number of tries, it
should shut itself down.
> If the region server cannot contact the master,
> - if the master is alive but the network is partitioned, the master will probably time
out the region server's lease and try to recover the server's log and reassign the regions
the server is serving.
> - if the master has died, and subsequently restarts, it will be reassigning regions anyway,
so the region server should stop serving the regions.

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