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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-776) Master not reassigning .META. from failed/failing regionserver
Date Sat, 26 Jul 2008 02:31:31 GMT

    [ https://issues.apache.org/jira/browse/HBASE-776?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12617115#action_12617115
] 

Andrew Purtell commented on HBASE-776:
--------------------------------------

Is 200-500 requests for META per second is normal? The client code is reusing the same HTable
object and is just using table.commit(BatchUpdate) to insert data imported from a Postgres
DB. 

> Master not reassigning .META. from failed/failing regionserver
> --------------------------------------------------------------
>
>                 Key: HBASE-776
>                 URL: https://issues.apache.org/jira/browse/HBASE-776
>             Project: Hadoop HBase
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 0.2.0
>         Environment: CentOS x86_64, JDK 1.6, Hadoop 0.17.1, HBase 0.2.0, r679585, Fri
Jul 25 16:47:26 UTC 2008
>            Reporter: Andrew Purtell
>         Attachments: hbase-hadoop-master-sjdc-atr-dc-1.log, hbase-hadoop-regionserver-sjdc-atr-dc-13.log,
master_gui.png
>
>
> In our environment sometimes the regionserver carrying META is also assigned to the 'content'
table, into which objects retrieved from Internet crawling is stored. For unclear reason the
regionserver occasionally goes "deaf" (seperate issue) and when this happens META is no longer
available. The master then never reassigns META, so the whole cluster is down from this point
and does not recover. Logs attached.

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