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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-1062) Compactions at (re)start on a large table can overwhelm DFS
Date Sun, 14 Dec 2008 13:14:44 GMT

     [ https://issues.apache.org/jira/browse/HBASE-1062?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew Purtell updated HBASE-1062:
----------------------------------

    Summary: Compactions at (re)start on a large table can overwhelm DFS  (was: Compactions
at (re)start on a very large table can overwhelm DFS)

Edited description. 1000 region table is only large, not very large.

> Compactions at (re)start on a large table can overwhelm DFS
> -----------------------------------------------------------
>
>                 Key: HBASE-1062
>                 URL: https://issues.apache.org/jira/browse/HBASE-1062
>             Project: Hadoop HBase
>          Issue Type: Bug
>            Reporter: Andrew Purtell
>
> Given a large table, > 1000 regions for example, if a cluster restart is necessary,
the compactions undertaken by the regionservers when the master makes initial region assignments
can overwhelm DFS, leading to file errors and data loss. This condition is exacerbated if
write load was heavy before restart and so many regions want to split as soon as they are
opened. 

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