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https://issues.apache.org/jira/browse/HDFS-6677?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14140362#comment-14140362
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Hudson commented on HDFS-6677:
------------------------------
SUCCESS: Integrated in Hadoop-Yarn-trunk #685 (See
[https://builds.apache.org/job/Hadoop-Yarn-trunk/685/])
HDFS-6677. Change INodeFile and FSImage to support storage policy ID.
(szetszwo: rev 6f41baa6233dad92865af23ec6b7a89733c11ddd)
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFSPermissionChecker.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/FSImageFormatPBSnapshot.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/CreateEditsLog.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeFileAttributes.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImageFormatPBINode.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImageSerialization.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestEditLog.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeFile.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImageFormat.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestINodeFile.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/proto/fsimage.proto
> Archival Storage: Change INodeFile and FSImage to support storage policy
> ------------------------------------------------------------------------
>
> Key: HDFS-6677
> URL: https://issues.apache.org/jira/browse/HDFS-6677
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Reporter: Tsz Wo Nicholas Sze
> Assignee: Tsz Wo Nicholas Sze
> Fix For: Archival Storage (HDFS-6584)
>
> Attachments: h6677_20140714.patch
>
>
> Policy ID will be stored in INodeFile header with 4 bits which can support 16
> different storage policies. The number of bits for replication will be
> reduced from 16 bits to 12 bits which is still able to support up to 4095
> replicas. The number of bits for block size remains 48 bits. The memory
> usage of INodeFile remains unchanged.
> The storage policy IDs assigned to Hot, Warm and Cold policies are
> respectively 12, 8 and 4. These numbers are chosen with gaps so that future
> policies can be added in-between.
> We should make a corresponding change in FSImage.
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