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https://issues.apache.org/jira/browse/HDFS-9036?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14742073#comment-14742073
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Hudson commented on HDFS-9036:
------------------------------
SUCCESS: Integrated in Hadoop-Yarn-trunk #1115 (See
[https://builds.apache.org/job/Hadoop-Yarn-trunk/1115/])
HDFS-9036. In BlockPlacementPolicyWithNodeGroup#chooseLocalStorage , random
node is selected eventhough fallbackToLocalRack is true. (Contributed by
J.Andreina) (vinayakumarb: rev c7156503856e24faf844c5c647157b310d8b537f)
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestReplicationPolicyWithNodeGroup.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockPlacementPolicyWithNodeGroup.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
> In BlockPlacementPolicyWithNodeGroup#chooseLocalStorage , random node is
> selected eventhough fallbackToLocalRack is true.
> -------------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-9036
> URL: https://issues.apache.org/jira/browse/HDFS-9036
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: J.Andreina
> Assignee: J.Andreina
> Fix For: 2.8.0
>
> Attachments: HDFS-9036.1.patch, HDFS-9036.2.patch
>
>
> For example in below clusterMap
> Writer = "/d2/r4/n8" which does not have local node.
> Available nodes rack = {"/d2/r4/n7","/d1/r1/n1","/d1/r2/n3","/d2/r3/n6"}
> Current hierarchy in choosing node for first local storage replica is
> 1. Choose local machine (Not available)
> 2. Choose Local node group machine (Not available)
> 3. choose random
> *But instead of choosing random , should choose localrack node first(if
> fallbackToLocalRack is true, in example it is "/d2/r4/n7" ) else should go
> for radom node*
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