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https://issues.apache.org/jira/browse/HDFS-8540?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14588182#comment-14588182
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Hudson commented on HDFS-8540:
------------------------------
FAILURE: Integrated in Hadoop-Mapreduce-trunk-Java8 #228 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Java8/228/])
HDFS-8540. Mover should exit with NO_MOVE_BLOCK if no block can be moved.
Contributed by surendra singh lilhore (szetszwo: rev
321940cf19375febe9660e96d905360cfcc15f5f)
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/mover/Mover.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/mover/TestStorageMover.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/mover/TestMover.java
Move HDFS-8540 to 2.8 in CHANGES.txt. (szetszwo: rev
1b6695a4c0d76fe18d6524cc1379bc1185708c6f)
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
> Mover should exit with NO_MOVE_BLOCK if no block can be moved
> -------------------------------------------------------------
>
> Key: HDFS-8540
> URL: https://issues.apache.org/jira/browse/HDFS-8540
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: balancer & mover
> Reporter: Tsz Wo Nicholas Sze
> Assignee: surendra singh lilhore
> Fix For: 2.8.0
>
> Attachments: HDFS-8540.patch, HDFS-8540_1.patch, HDFS-8540_2.patch,
> HDFS-8540_3.patch
>
>
> When there are files not satisfying their storage policy and no move is
> possible, Mover exits with SUCCESS. It should exit with NO_MOVE_BLOCK.
> The bug seems in the following code. When StorageTypeDiff is not empty and
> scheduleMoves4Block return false, it does not update hasRemaining. Also,
> there is no indication of "No block can be moved" for the entire iteration.
> {code}
> //Mover.processFile(..)
> if (!diff.removeOverlap(true)) {
> if (scheduleMoves4Block(diff, lb, ecSchema)) {
> hasRemaining |= (diff.existing.size() > 1 &&
> diff.expected.size() > 1);
> }
> }
> {code}
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