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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-4465) Optimize datanode ReplicasMap and ReplicaInfo
Date Thu, 04 Jul 2013 06:00:23 GMT

     [ https://issues.apache.org/jira/browse/HDFS-4465?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aaron T. Myers updated HDFS-4465:
---------------------------------

       Resolution: Fixed
    Fix Version/s: 2.1.0-beta
     Hadoop Flags: Reviewed
           Status: Resolved  (was: Patch Available)

I've just committed this to trunk and branch-2.

Suresh, I see all of branch-2.1-beta, branch-2.1.0-alpha, and branch-2.1.0-beta. Would you
mind merging this commit to whichever of those branches you think is appropriate? Thanks a
lot.
                
> Optimize datanode ReplicasMap and ReplicaInfo
> ---------------------------------------------
>
>                 Key: HDFS-4465
>                 URL: https://issues.apache.org/jira/browse/HDFS-4465
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>    Affects Versions: 2.0.5-alpha
>            Reporter: Suresh Srinivas
>            Assignee: Aaron T. Myers
>             Fix For: 2.1.0-beta
>
>         Attachments: dn-memory-improvements.patch, HDFS-4465.patch, HDFS-4465.patch,
HDFS-4465.patch
>
>
> In Hadoop a lot of optimization has been done in namenode data structures to be memory
efficient. Similar optimizations are necessary for Datanode process. With the growth in storage
per datanode and number of blocks hosted on datanode, this jira intends to optimize long lived
ReplicasMap and ReplicaInfo objects.

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