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https://issues.apache.org/jira/browse/MAPREDUCE-6436?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15057236#comment-15057236
]
Hadoop QA commented on MAPREDUCE-6436:
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| (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 0s
{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: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} 7m
28s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 15s
{color} | {color:green} trunk passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 18s
{color} | {color:green} trunk passed with JDK v1.7.0_91 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
9s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 24s
{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
14s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 0m
34s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 13s
{color} | {color:green} trunk passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 16s
{color} | {color:green} trunk passed with JDK v1.7.0_91 {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m
21s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 15s
{color} | {color:green} the patch passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 15s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 18s
{color} | {color:green} the patch passed with JDK v1.7.0_91 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 18s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
8s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 24s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
13s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m
0s {color} | {color:green} Patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 0m
42s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 12s
{color} | {color:green} the patch passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 16s
{color} | {color:green} the patch passed with JDK v1.7.0_91 {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 5m 32s {color}
| {color:red} hadoop-mapreduce-client-hs in the patch failed with JDK
v1.8.0_66. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 5m 58s
{color} | {color:green} hadoop-mapreduce-client-hs in the patch passed with JDK
v1.7.0_91. {color} |
| {color:red}-1{color} | {color:red} asflicense {color} | {color:red} 0m 20s
{color} | {color:red} Patch generated 14 ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 25m 38s {color}
| {color:black} {color} |
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|| Reason || Tests ||
| JDK v1.8.0_66 Failed junit tests |
hadoop.mapreduce.v2.hs.TestHistoryFileManager |
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|| Subsystem || Report/Notes ||
| Docker | Image:yetus/hadoop:0ca8df7 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12777649/MAPREDUCE-6436.4.patch
|
| JIRA Issue | MAPREDUCE-6436 |
| Optional Tests | asflicense compile javac javadoc mvninstall mvnsite
unit findbugs checkstyle |
| uname | Linux ca50a68ad968 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 | /testptch/hadoop/patchprocess/precommit/personality/provided.sh
|
| git revision | trunk / d8a4542 |
| findbugs | v3.0.0 |
| unit |
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/6208/artifact/patchprocess/patch-unit-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-hs-jdk1.8.0_66.txt
|
| unit test logs |
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/6208/artifact/patchprocess/patch-unit-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-hs-jdk1.8.0_66.txt
|
| JDK v1.7.0_91 Test Results |
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/6208/testReport/ |
| asflicense |
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/6208/artifact/patchprocess/patch-asflicense-problems.txt
|
| modules | C:
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs U:
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs |
| Max memory used | 75MB |
| Powered by | Apache Yetus 0.2.0-SNAPSHOT http://yetus.apache.org |
| Console output |
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/6208/console |
This message was automatically generated.
> JobHistory cache issue
> ----------------------
>
> Key: MAPREDUCE-6436
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6436
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Ryu Kobayashi
> Assignee: Kai Sasaki
> Attachments: MAPREDUCE-6436.1.patch, MAPREDUCE-6436.2.patch,
> MAPREDUCE-6436.3.patch, MAPREDUCE-6436.4.patch, stacktrace1.txt,
> stacktrace2.txt, stacktrace3.txt
>
>
> Problem:
> HistoryFileManager.addIfAbsent produces large amount of logs if number of
> cached entries whose age is less than mapreduce.jobhistory.max-age-ms becomes
> larger than mapreduce.jobhistory.joblist.cache.size by far.
> Example:
> For example, if the cache contains 50000 entries in total and 10,000 entries
> newer than mapreduce.jobhistory.max-age-ms where
> mapreduce.jobhistory.joblist.cache.size is 20000,
> HistoryFileManager.addIfAbsent
> method produces 50000 - 20000 = 30000 lines of "Waiting to remove <key> from
> JobListCache because it is not in done yet" message.
> It will attach a stacktrace.
> Impact:
> In addition to large disk consumption, this issue blocks JobHistory.getJob
> long time and slows job execution down significantly because getJob is called
> by RPC such as HistoryClientService.HSClientProtocolHandler.getJobReport.
> This impact happens because HistoryFileManager.UserLogDir.scanIfNeeded
> eventually calls HistoryFileManager.addIfAbsent in a synchronized block. When
> multiple threads call scanIfNeeded simultaneously, one of them acquires lock
> and the other threads are blocked until the first thread completes
> long-running
> HistoryFileManager.addIfAbsent call.
> Solution:
> * Reduce amount of logs so that HistoryFileManager.addIfAbsent doesn't take
> too long time.
> * Good to have if possible: HistoryFileManager.UserLogDir.scanIfNeeded skips
> scanning if another thread is already scanning. This changes semantics of
> some HistoryFileManager methods (such as getAllFileInfo and getFileInfo)
> because scanIfNeeded keep outdated state.
> * Good to have if possible: Make scanIfNeeded asynchronous so that RPC calls
> are
> not blocked by a loop at scale of tens of thousands.
>
> This patch implemented the first item.
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