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https://issues.apache.org/jira/browse/YARN-7320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16202911#comment-16202911
]
Hadoop QA commented on YARN-7320:
---------------------------------
| (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
23s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {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: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:brown} trunk Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 13m
54s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
26s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
16s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m
28s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green}
9m 21s{color} | {color:green} branch has no errors when building and testing
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 0m
59s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
21s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m
26s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
22s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m
22s{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}
0m 13s{color} | {color:orange}
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common:
The patch generated 1 new + 27 unchanged - 1 fixed = 28 total (was 28) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m
25s{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} shadedclient {color} | {color:green}
10m 1s{color} | {color:green} patch has no errors when building and testing
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 0m
58s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
18s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 2m
3s{color} | {color:green} hadoop-yarn-server-common in the patch passed.
{color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
19s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 41m 49s{color} |
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Image:yetus/hadoop:3d04c00 |
| JIRA Issue | YARN-7320 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12891862/YARN-7320.02.patch |
| Optional Tests | asflicense compile javac javadoc mvninstall mvnsite
unit shadedclient findbugs checkstyle |
| uname | Linux 67bf0dbfeeff 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 / e46d5bb |
| Default Java | 1.8.0_144 |
| findbugs | v3.1.0-RC1 |
| checkstyle |
https://builds.apache.org/job/PreCommit-YARN-Build/17904/artifact/patchprocess/diff-checkstyle-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-common.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-YARN-Build/17904/testReport/ |
| modules | C:
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common U:
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common |
| Console output |
https://builds.apache.org/job/PreCommit-YARN-Build/17904/console |
| Powered by | Apache Yetus 0.6.0-SNAPSHOT http://yetus.apache.org |
This message was automatically generated.
> Duplicate LiteralByteStrings in
> SystemCredentialsForAppsProto.credentialsForApp_
> --------------------------------------------------------------------------------
>
> Key: YARN-7320
> URL: https://issues.apache.org/jira/browse/YARN-7320
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: Misha Dmitriev
> Assignee: Misha Dmitriev
> Attachments: YARN-7320.01.patch, YARN-7320.02.patch
>
>
> Using jxray (www.jxray.com) I've analyzed several heap dumps from YARN
> Resource Manager running in a big cluster. The tool uncovered several sources
> of memory waste. One problem, which results in wasting more than a quarter of
> all memory, is a large number of duplicate {{LiteralByteString}} objects
> coming from the following reference chain:
> {code}
> 1,011,810K (26.9%): byte[]: 5416705 / 100% dup arrays (22108 unique)
> ↖com.google.protobuf.LiteralByteString.bytes
> ↖org.apache.hadoop.yarn.proto.YarnServerCommonServiceProtos$.credentialsForApp_
> ↖{j.u.ArrayList}
> ↖j.u.Collections$UnmodifiableRandomAccessList.c
> ↖org.apache.hadoop.yarn.proto.YarnServerCommonServiceProtos$NodeHeartbeatResponseProto.systemCredentialsForApps_
> ↖org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.NodeHeartbeatResponsePBImpl.proto
> ↖org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeImpl.latestNodeHeartBeatResponse
> ↖org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSSchedulerNode.rmNode
> ...
> {code}
> That is, collectively reference chains that look as above hold in memory 5.4
> million {{LiteralByteString}} objects, but only ~22 thousand of these objects
> are unique. Deduplicating these objects, e.g. using a Google Object Interner
> instance, would save ~1GB of memory.
> It looks like the main place where the above {{LiteralByteString}}s are
> created and attached to the {{SystemCredentialsForAppsProto}} objects is in
> {{NodeHeartbeatResponsePBImpl.java}}, method
> {{addSystemCredentialsToProto()}}. Probably adding a call to an interner
> there will fix the problem. wi
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