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https://issues.apache.org/jira/browse/HDFS-8204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14512761#comment-14512761
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Hadoop QA commented on HDFS-8204:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch | 14m 37s | Pre-patch trunk compilation is
healthy. |
| {color:green}+1{color} | @author | 0m 0s | The patch does not contain any
@author tags. |
| {color:green}+1{color} | tests included | 0m 0s | The patch appears to
include 1 new or modified test files. |
| {color:green}+1{color} | whitespace | 0m 0s | The patch has no lines that
end in whitespace. |
| {color:green}+1{color} | javac | 7m 30s | There were no new javac warning
messages. |
| {color:green}+1{color} | javadoc | 9m 37s | There were no new javadoc
warning messages. |
| {color:green}+1{color} | release audit | 0m 22s | The applied patch does
not increase the total number of release audit warnings. |
| {color:red}-1{color} | checkstyle | 5m 20s | The applied patch generated 1
additional checkstyle issues. |
| {color:green}+1{color} | install | 1m 31s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse | 0m 32s | The patch built with
eclipse:eclipse. |
| {color:green}+1{color} | findbugs | 3m 4s | The patch does not introduce
any new Findbugs (version 2.0.3) warnings. |
| {color:green}+1{color} | native | 3m 13s | Pre-build of native portion |
| {color:red}-1{color} | hdfs tests | 162m 27s | Tests failed in hadoop-hdfs. |
| | | 208m 16s | |
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|| Reason || Tests ||
| Failed unit tests | hadoop.hdfs.server.mover.TestMover |
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|| Subsystem || Report/Notes ||
| Patch URL |
http://issues.apache.org/jira/secure/attachment/12728130/HDFS-8204.002.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / a00e001 |
| checkstyle |
https://builds.apache.org/job/PreCommit-HDFS-Build/10394/artifact/patchprocess/checkstyle-result-diff.txt
|
| hadoop-hdfs test log |
https://builds.apache.org/job/PreCommit-HDFS-Build/10394/artifact/patchprocess/testrun_hadoop-hdfs.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HDFS-Build/10394/testReport/ |
| Console output |
https://builds.apache.org/job/PreCommit-HDFS-Build/10394/console |
This message was automatically generated.
> Mover/Balancer should not schedule two replicas to the same DN
> --------------------------------------------------------------
>
> Key: HDFS-8204
> URL: https://issues.apache.org/jira/browse/HDFS-8204
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: balancer & mover
> Reporter: Walter Su
> Assignee: Walter Su
> Attachments: HDFS-8204.001.patch, HDFS-8204.002.patch
>
>
> Balancer moves blocks between Datanode(Ver. <2.6 ).
> Balancer moves blocks between StorageGroups ( introduced by HDFS-6584) , in
> the new version(Ver. >=2.6) .
> function
> {code}
> class DBlock extends Locations<StorageGroup>
> DBlock.isLocatedOn(StorageGroup loc)
> {code}
> is flawed, may causes 2 replicas ends in same node after running balance.
> For example:
> We have 2 nodes. Each node has two storages.
> We have (DN0, SSD), (DN0, DISK), (DN1, SSD), (DN1, DISK).
> We have a block with ONE_SSD storage policy.
> The block has 2 replicas. They are in (DN0,SSD) and (DN1,DISK).
> Replica in (DN0,SSD) should not be moved to (DN1,SSD) after running Balancer.
> Otherwise DN1 has 2 replicas.
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