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https://issues.apache.org/jira/browse/HDFS-9381?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15015174#comment-15015174
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Hadoop QA commented on HDFS-9381:
---------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 7m 20s 
{color} | {color:blue} docker + precommit patch detected. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green} 0m 0s 
{color} | {color:green} The patch does not contain any @author tags. {color} |
| {color:green}+1{color} | {color:green} test4tests {color} | {color:green} 0m 
0s {color} | {color:green} The patch appears to include 1 new or modified test 
files. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 8m 
43s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 49s 
{color} | {color:green} trunk passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 49s 
{color} | {color:green} trunk passed with JDK v1.7.0_85 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 
17s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 58s 
{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 
16s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m 
10s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 18s 
{color} | {color:green} trunk passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 2m 4s 
{color} | {color:green} trunk passed with JDK v1.7.0_85 {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m 
56s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 50s 
{color} | {color:green} the patch passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 50s 
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 49s 
{color} | {color:green} the patch passed with JDK v1.7.0_85 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 49s 
{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 0m 20s 
{color} | {color:red} Patch generated 4 new checkstyle issues in 
hadoop-hdfs-project/hadoop-hdfs (total was 169, now 172). {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m 3s 
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 
15s {color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red} 0m 0s 
{color} | {color:red} The patch has 5 line(s) that end in whitespace. Use git 
apply --whitespace=fix. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m 
21s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 15s 
{color} | {color:green} the patch passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 55s 
{color} | {color:green} the patch passed with JDK v1.7.0_85 {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 65m 41s {color} 
| {color:red} hadoop-hdfs in the patch failed with JDK v1.8.0_66. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 59m 15s {color} 
| {color:red} hadoop-hdfs in the patch failed with JDK v1.7.0_85. {color} |
| {color:red}-1{color} | {color:red} asflicense {color} | {color:red} 0m 22s 
{color} | {color:red} Patch generated 58 ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 162m 39s {color} 
| {color:black} {color} |
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|| Reason || Tests ||
| JDK v1.8.0_66 Failed junit tests | 
hadoop.hdfs.server.namenode.ha.TestSeveralNameNodes |
|   | hadoop.hdfs.TestDistributedFileSystem |
|   | hadoop.hdfs.server.namenode.TestFavoredNodesEndToEnd |
|   | hadoop.hdfs.server.namenode.ha.TestPipelinesFailover |
|   | hadoop.hdfs.qjournal.client.TestQJMWithFaults |
| JDK v1.7.0_85 Failed junit tests | 
hadoop.hdfs.TestReadStripedFileWithDecoding |
|   | hadoop.hdfs.TestDFSStripedOutputStreamWithFailure050 |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:date2015-11-20 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12773413/HDFS-9381.01.patch |
| JIRA Issue | HDFS-9381 |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  
unit  findbugs  checkstyle  |
| uname | Linux 8e2927e16a9a 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed 
Sep 3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | 
/home/jenkins/jenkins-slave/workspace/PreCommit-HDFS-Build@2/patchprocess/apache-yetus-3f4279a/precommit/personality/hadoop.sh
 |
| git revision | trunk / 4539131 |
| findbugs | v3.0.0 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-HDFS-Build/13572/artifact/patchprocess/diff-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt
 |
| whitespace | 
https://builds.apache.org/job/PreCommit-HDFS-Build/13572/artifact/patchprocess/whitespace-eol.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HDFS-Build/13572/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.8.0_66.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HDFS-Build/13572/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.7.0_85.txt
 |
| unit test logs |  
https://builds.apache.org/job/PreCommit-HDFS-Build/13572/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.8.0_66.txt
 
https://builds.apache.org/job/PreCommit-HDFS-Build/13572/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.7.0_85.txt
 |
| JDK v1.7.0_85  Test Results | 
https://builds.apache.org/job/PreCommit-HDFS-Build/13572/testReport/ |
| asflicense | 
https://builds.apache.org/job/PreCommit-HDFS-Build/13572/artifact/patchprocess/patch-asflicense-problems.txt
 |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U: 
hadoop-hdfs-project/hadoop-hdfs |
| Max memory used | 77MB |
| Powered by | Apache Yetus   http://yetus.apache.org |
| Console output | 
https://builds.apache.org/job/PreCommit-HDFS-Build/13572/console |


This message was automatically generated.



> When same block came for replication for Striped mode, we can move that block 
> to PendingReplications
> ----------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-9381
>                 URL: https://issues.apache.org/jira/browse/HDFS-9381
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: erasure-coding, namenode
>    Affects Versions: 3.0.0
>            Reporter: Uma Maheswara Rao G
>            Assignee: Uma Maheswara Rao G
>         Attachments: HDFS-9381.00.patch, HDFS-9381.01.patch
>
>
> Currently I noticed that we are just returning null if block already exists 
> in pendingReplications in replication flow for striped blocks.
> {code}
> if (block.isStriped()) {
>       if (pendingNum > 0) {
>         // Wait the previous recovery to finish.
>         return null;
>       }
> {code}
>  Here if we just return null and if neededReplications contains only fewer 
> blocks(basically by default if less than numliveNodes*2), then same blocks 
> can be picked again from neededReplications from next loop as we are not 
> removing element from neededReplications. Since this replication process need 
> to take fsnamesystmem lock and do, we may spend some time unnecessarily in 
> every loop. 
> So my suggestion/improvement is:
>  Instead of just returning null, how about incrementing pendingReplications 
> for this block and remove from neededReplications? and also another point to 
> consider here is, to add into pendingReplications, generally we need target 
> and it is nothing but to which node we issued replication command. Later when 
> after replication success and DN reported it, block will be removed from 
> pendingReplications from NN addBlock. 
>  So since this is newly picked block from neededReplications, we would not 
> have selected target yet. So which target to be passed to pendingReplications 
> if we add this block? One Option I am thinking is, how about just passing 
> srcNode itself as target for this special condition? So, anyway if the block 
> is really missed, srcNode will not report it. So this block will not be 
> removed from pending replications, so that when it is timed out, it will be 
> considered for replication again and that time it will find actual target to 
> replicate while processing as part of regular replication flow.



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