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From "John Vines (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (ACCUMULO-2266) TServer should ensure wal settings are valid for underlying FS
Date Tue, 28 Jan 2014 22:51:34 GMT

     [ https://issues.apache.org/jira/browse/ACCUMULO-2266?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

John Vines reassigned ACCUMULO-2266:
------------------------------------

    Assignee: John Vines

> TServer should ensure wal settings are valid for underlying FS
> --------------------------------------------------------------
>
>                 Key: ACCUMULO-2266
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-2266
>             Project: Accumulo
>          Issue Type: Bug
>          Components: tserver
>    Affects Versions: 1.5.0
>            Reporter: Sean Busbey
>            Assignee: John Vines
>            Priority: Critical
>             Fix For: 1.5.1, 1.6.0
>
>
> ACCUMULO-2264 revealed a problem in how the tserver handles conflicts between its settings
and the restrictions of the underlying fs.
> In the case of ACCUMULO-2264, if the tserver is configured with a wal block size less
than that allowed by HDFS the tserver sits in an infinite loop.
> The tserver should probably be checking for the minimum blocksize (the property is dfs.namenode.fs-limits.min-block-size)
and then either issuing a WARN/ERROR to the client and using the minimum or failing loudly
and refusing to start. I favor the latter.



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