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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-14412) HostsFileReader#getHostDetails is very expensive on large clusters
Date Fri, 12 May 2017 01:35:04 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14412?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16007494#comment-16007494
] 

Hadoop QA commented on HADOOP-14412:
------------------------------------

| (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 26s{color} | {color:blue}
Docker mode activated. {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:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  1m 32s{color} | {color:blue}
Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 14m  1s{color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 17m  6s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  1m 57s{color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m 55s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 44s{color}
| {color:green} trunk passed {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  1m 31s{color} | {color:red}
hadoop-common-project/hadoop-common in trunk has 19 extant Findbugs warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 24s{color} |
{color:green} trunk passed {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 16s{color} | {color:blue}
Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 21s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 15m 29s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 15m 29s{color} | {color:green}
the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  3m  3s{color}
| {color:orange} root: The patch generated 7 new + 26 unchanged - 2 fixed = 33 total (was
28) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  2m 10s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 52s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m  0s{color}
| {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  3m  1s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 26s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  9m  5s{color} | {color:green}
hadoop-common in the patch passed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 44m 21s{color} | {color:red}
hadoop-yarn-server-resourcemanager in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 44s{color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black}148m  3s{color} | {color:black}
{color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.yarn.server.resourcemanager.scheduler.capacity.TestIncreaseAllocationExpirer
|
|   | hadoop.yarn.server.resourcemanager.TestRMRestart |
| Timed out junit tests | org.apache.hadoop.yarn.server.resourcemanager.TestSubmitApplicationWithRMHA
|
|   | org.apache.hadoop.yarn.server.resourcemanager.TestKillApplicationWithRMHA |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:14b5c93 |
| JIRA Issue | HADOOP-14412 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12867664/HADOOP-14412.001.patch
|
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  unit  findbugs
 checkstyle  |
| uname | Linux fce2e2c3b875 3.13.0-116-generic #163-Ubuntu SMP Fri Mar 31 14:13:22 UTC 2017
x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 0d5c8ed |
| Default Java | 1.8.0_121 |
| findbugs | v3.1.0-RC1 |
| findbugs | https://builds.apache.org/job/PreCommit-HADOOP-Build/12297/artifact/patchprocess/branch-findbugs-hadoop-common-project_hadoop-common-warnings.html
|
| checkstyle | https://builds.apache.org/job/PreCommit-HADOOP-Build/12297/artifact/patchprocess/diff-checkstyle-root.txt
|
| unit | https://builds.apache.org/job/PreCommit-HADOOP-Build/12297/artifact/patchprocess/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
|
|  Test Results | https://builds.apache.org/job/PreCommit-HADOOP-Build/12297/testReport/ |
| modules | C: hadoop-common-project/hadoop-common hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
U: . |
| Console output | https://builds.apache.org/job/PreCommit-HADOOP-Build/12297/console |
| Powered by | Apache Yetus 0.5.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> HostsFileReader#getHostDetails is very expensive on large clusters
> ------------------------------------------------------------------
>
>                 Key: HADOOP-14412
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14412
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: util
>    Affects Versions: 2.8.0
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>         Attachments: HADOOP-14412.001.patch
>
>
> After upgrading one of our large clusters to 2.8 we noticed many IPC server threads of
the resourcemanager spending time in NodesListManager#isValidNode which in turn was calling
HostsFileReader#getHostDetails.  The latter is creating complete copies of the include and
exclude sets for every node heartbeat, and these sets are not small due to the size of the
cluster.  These copies are causing multiple resizes of the underlying HashSets being filled
and creating lots of garbage.



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