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https://issues.apache.org/jira/browse/HDFS-15255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17105496#comment-17105496
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Hudson commented on HDFS-15255:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #18238 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/18238/])
HDFS-15255. Consider StorageType when (sodonnell: rev
29dddb8a14e52681bca8168d29431083c9f32c4a)
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSInputStream.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/MockNamenode.java
* (edit)
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/NetworkTopology.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestDatanodeManager.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/CacheManager.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/LocatedBlock.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeManager.java
* (edit) hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
> Consider StorageType when DatanodeManager#sortLocatedBlock()
> ------------------------------------------------------------
>
> Key: HDFS-15255
> URL: https://issues.apache.org/jira/browse/HDFS-15255
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Lisheng Sun
> Assignee: Lisheng Sun
> Priority: Major
> Fix For: 3.4.0
>
> Attachments: HDFS-15255-findbugs-test.001.patch,
> HDFS-15255.001.patch, HDFS-15255.002.patch, HDFS-15255.003.patch,
> HDFS-15255.004.patch, HDFS-15255.005.patch, HDFS-15255.006.patch,
> HDFS-15255.007.patch, HDFS-15255.008.patch, HDFS-15255.009.patch,
> HDFS-15255.010.patch, experiment-find-bugs.001.patch
>
>
> When only one replica of a block is SDD, the others are HDD.
> When the client reads the data, the current logic is that it considers the
> distance between the client and the dn. I think it should also consider the
> StorageType of the replica. Priority to return fast StorageType node when the
> distance is same.
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