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From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HDFS-6934) Move checksum computation off the hot path when writing to RAM disk
Date Fri, 26 Sep 2014 15:37:34 GMT

     [ https://issues.apache.org/jira/browse/HDFS-6934?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsz Wo Nicholas Sze reassigned HDFS-6934:
-----------------------------------------

    Assignee: Tsz Wo Nicholas Sze

> Move checksum computation off the hot path when writing to RAM disk
> -------------------------------------------------------------------
>
>                 Key: HDFS-6934
>                 URL: https://issues.apache.org/jira/browse/HDFS-6934
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode
>         Environment: Since local RAM is considered reliable we can avoid writing checksums
on the hot path when replicas are being written to a local RAM disk.
> The checksum can be computed by the lazy writer when moving replicas to disk.
>            Reporter: Arpit Agarwal
>            Assignee: Tsz Wo Nicholas Sze
>




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