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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11015) Enforce timeout in balancer
Date Fri, 21 Oct 2016 14:22:58 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11015?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15595232#comment-15595232
] 

Hadoop QA commented on HDFS-11015:
----------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 15s{color} | {color:blue}
Docker mode activated. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  1s{color} |
{color:green} The patch does not contain any @author tags. {color} |
| {color:red}-1{color} | {color:red} test4tests {color} | {color:red}  0m  0s{color} | {color:red}
The patch doesn't appear to include any new or modified tests. Please justify why no new tests
are needed for this patch. Also please list what manual steps were performed to verify this
patch. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  6m 39s{color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 44s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 30s{color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 51s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 12s{color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  1m 45s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 40s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 54s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 48s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 48s{color} | {color:green}
the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  0m 29s{color}
| {color:orange} hadoop-hdfs-project/hadoop-hdfs: The patch generated 4 new + 477 unchanged
- 1 fixed = 481 total (was 478) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 55s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 10s{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 2 line(s) that end in whitespace. Use git apply --whitespace=fix <<patch_file>>.
Refer https://git-scm.com/docs/git-apply {color} |
| {color:green}+1{color} | {color:green} xml {color} | {color:green}  0m  1s{color} | {color:green}
The patch has no ill-formed XML file. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  2m  3s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 39s{color} |
{color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 65m  0s{color} | {color:red}
hadoop-hdfs in the patch failed. {color} |
| {color:red}-1{color} | {color:red} asflicense {color} | {color:red}  0m 19s{color} | {color:red}
The patch generated 2 ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 84m 10s{color} | {color:black}
{color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.hdfs.server.balancer.TestBalancerWithHANameNodes |
|   | hadoop.hdfs.server.balancer.TestBalancerWithMultipleNameNodes |
|   | hadoop.hdfs.server.blockmanagement.TestBlockTokenWithDFS |
|   | hadoop.hdfs.server.datanode.TestDataNodeLifeline |
|   | hadoop.hdfs.server.balancer.TestBalancer |
|   | hadoop.hdfs.server.balancer.TestBalancerWithSaslDataTransfer |
|   | hadoop.hdfs.server.balancer.TestBalancerWithEncryptedTransfer |
|   | hadoop.hdfs.server.blockmanagement.TestBlockTokenWithDFSStriped |
|   | hadoop.hdfs.server.balancer.TestBalancerWithNodeGroup |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:9560f25 |
| JIRA Issue | HDFS-11015 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12834648/HDFS-11015-2.patch
|
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  unit  findbugs
 checkstyle  xml  |
| uname | Linux 2e64e560c25d 3.13.0-92-generic #139-Ubuntu SMP Tue Jun 28 20:42:26 UTC 2016
x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 754cb4e |
| Default Java | 1.8.0_101 |
| findbugs | v3.0.0 |
| checkstyle | https://builds.apache.org/job/PreCommit-HDFS-Build/17251/artifact/patchprocess/diff-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt
|
| whitespace | https://builds.apache.org/job/PreCommit-HDFS-Build/17251/artifact/patchprocess/whitespace-eol.txt
|
| unit | https://builds.apache.org/job/PreCommit-HDFS-Build/17251/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt
|
|  Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/17251/testReport/ |
| asflicense | https://builds.apache.org/job/PreCommit-HDFS-Build/17251/artifact/patchprocess/patch-asflicense-problems.txt
|
| modules | C: hadoop-hdfs-project/hadoop-hdfs U: hadoop-hdfs-project/hadoop-hdfs |
| Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/17251/console |
| Powered by | Apache Yetus 0.4.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> Enforce timeout in balancer
> ---------------------------
>
>                 Key: HDFS-11015
>                 URL: https://issues.apache.org/jira/browse/HDFS-11015
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Kihwal Lee
>            Assignee: Kihwal Lee
>         Attachments: HDFS-11015-1.patch, HDFS-11015-2.patch, balancer.png
>
>
> 1) Hung node detection: HDFS-6247 has removed the socket read timeout while adding the
periodic response for slow block moves. However, the removal of the long timeout wasn't necessary.
 The timeout is still useful for avoiding hung nodes and does not abort slow moves.
> 2) Enforcing the iteration limit:The 20 minute iteration limit is supposed to be enforced,
but it is not. An iteration can easily stretch to 30 to 40 minutes with a long tail. Because
of the long tails, the balancer throughput does not reach its full potential.
> 3) Slow move detection: For improved throughput, imposing block move timeout is sometimes
necessary.  We have seen an iteration taking over 2 hours because of one slow block move.
 This is mainly for catching exceptionally slow moves.  Even if the balancer stops waiting,
the move will continue and finish.
> In order to not undo what  HDFS-6247 tried to achieve, it should be possible to configure
off 3).



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