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From "Junping Du (JIRA)" <j...@apache.org>
Subject [jira] [Moved] (HDFS-3498) Make ReplicaPlacementPolicyDefault extensible for reuse code in subclass
Date Mon, 04 Jun 2012 18:10:23 GMT

     [ https://issues.apache.org/jira/browse/HDFS-3498?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Junping Du moved HADOOP-8471 to HDFS-3498:
------------------------------------------

          Component/s:     (was: ha)
                           (was: io)
                       data-node
    Affects Version/s:     (was: 2.0.0-alpha)
                           (was: 1.0.0)
                       1.0.0
                       2.0.0-alpha
                  Key: HDFS-3498  (was: HADOOP-8471)
              Project: Hadoop HDFS  (was: Hadoop Common)
    
> Make ReplicaPlacementPolicyDefault extensible for reuse code in subclass
> ------------------------------------------------------------------------
>
>                 Key: HDFS-3498
>                 URL: https://issues.apache.org/jira/browse/HDFS-3498
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: data-node
>    Affects Versions: 2.0.0-alpha, 1.0.0
>            Reporter: Junping Du
>            Assignee: Junping Du
>         Attachments: Hadoop-8471-BlockPlacementDefault-extensible.patch
>
>
> ReplicaPlacementPolicy is already a pluggable component in Hadoop. A user specified ReplicaPlacementPolicy
can be specified in the hdfs-site.xml configuration under the key "dfs.block.replicator.classname".
However, to make it possible to reuse code in ReplicaPlacementPolicyDefault a few of its methods
were changed from private to protected. ReplicaPlacementPolicy and BlockPlacementPolicyDefault
are currently annotated with @InterfaceAudience.Private.

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