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https://issues.apache.org/jira/browse/HDFS-15120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17045916#comment-17045916
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Hudson commented on HDFS-15120:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #17999 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/17999/])
HDFS-15120. Refresh BlockPlacementPolicy at runtime. Contributed by
(ayushsaxena: rev 209630472a3216c9f13bcffa62b553f9fb7675ca)
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/tools/TestDFSAdmin.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNode.java
* (add)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestRefreshBlockPlacementPolicy.java
> Refresh BlockPlacementPolicy at runtime.
> ----------------------------------------
>
> Key: HDFS-15120
> URL: https://issues.apache.org/jira/browse/HDFS-15120
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Jinglun
> Assignee: Jinglun
> Priority: Major
> Fix For: 3.3.0
>
> Attachments: HDFS-15120.001.patch, HDFS-15120.002.patch,
> HDFS-15120.003.patch, HDFS-15120.004.patch, HDFS-15120.005.patch,
> HDFS-15120.006.patch, HDFS-15120.007.1.patch, HDFS-15120.007.patch,
> HDFS-15120.008.patch
>
>
> Now if we want to switch BlockPlacementPolicies we need to restart the
> NameNode. It would be convenient if we can switch it at runtime. For example
> we can switch between AvailableSpaceBlockPlacementPolicy and
> BlockPlacementPolicyDefault as needed.
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