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Posted to mapreduce-issues@hadoop.apache.org by "Hadoop QA (Jira)" <ji...@apache.org> on 2019/09/03 05:51:00 UTC
[jira] [Commented] (MAPREDUCE-7017) Too many times of meaningless
invocation in TaskAttemptImpl#resolveHosts
[ https://issues.apache.org/jira/browse/MAPREDUCE-7017?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16921181#comment-16921181 ]
Hadoop QA commented on MAPREDUCE-7017:
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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 39s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} dupname {color} | {color:green} 0m 0s{color} | {color:green} No case conflicting files found. {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} 17m 57s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 29s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 26s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 36s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 12m 44s{color} | {color:green} branch has no errors when building and testing our client artifacts. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 25s{color} | {color:green} trunk passed {color} |
| {color:blue}0{color} | {color:blue} spotbugs {color} | {color:blue} 0m 56s{color} | {color:blue} Used deprecated FindBugs config; considering switching to SpotBugs. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 0m 53s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m 32s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 25s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 25s{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange} 0m 25s{color} | {color:orange} hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app: The patch generated 2 new + 263 unchanged - 0 fixed = 265 total (was 263) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 30s{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 1 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} shadedclient {color} | {color:green} 13m 11s{color} | {color:green} patch has no errors when building and testing our client artifacts. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 22s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 1m 0s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 10m 14s{color} | {color:red} hadoop-mapreduce-client-app in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 31s{color} | {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 62m 44s{color} | {color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.mapreduce.v2.app.job.impl.TestTaskAttempt |
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|| Subsystem || Report/Notes ||
| Docker | Client=19.03.1 Server=19.03.1 base: https://builds.apache.org/job/hadoop-multibranch/job/PR-309/9/artifact/out/Dockerfile |
| GITHUB PR | https://github.com/apache/hadoop/pull/309 |
| JIRA Issue | MAPREDUCE-7017 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient findbugs checkstyle |
| uname | Linux 71428b30152f 4.15.0-58-generic #64-Ubuntu SMP Tue Aug 6 11:12:41 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | personality/hadoop.sh |
| git revision | trunk / 915cbc9 |
| Default Java | 1.8.0_222 |
| checkstyle | https://builds.apache.org/job/hadoop-multibranch/job/PR-309/9/artifact/out/diff-checkstyle-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-app.txt |
| whitespace | https://builds.apache.org/job/hadoop-multibranch/job/PR-309/9/artifact/out/whitespace-eol.txt |
| unit | https://builds.apache.org/job/hadoop-multibranch/job/PR-309/9/artifact/out/patch-unit-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-app.txt |
| Test Results | https://builds.apache.org/job/hadoop-multibranch/job/PR-309/9/testReport/ |
| Max. process+thread count | 590 (vs. ulimit of 5500) |
| modules | C: hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app U: hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app |
| Console output | https://builds.apache.org/job/hadoop-multibranch/job/PR-309/9/console |
| versions | git=2.7.4 maven=3.3.9 findbugs=3.1.0-RC1 |
| Powered by | Apache Yetus 0.10.0 http://yetus.apache.org |
This message was automatically generated.
> Too many times of meaningless invocation in TaskAttemptImpl#resolveHosts
> ------------------------------------------------------------------------
>
> Key: MAPREDUCE-7017
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7017
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mr-am
> Affects Versions: 3.0.0-alpha4
> Reporter: jiayuhan-it
> Assignee: jiayuhan-it
> Priority: Major
> Attachments: MAPREDUCE-7017.001.patch
>
>
> MRAppMaster uses {{TaskAttemptImpl::resolveHosts}} to determine the dataLocalHosts for each task when the location of data split is IP, which will call a lot of times ( taskNum * dfsReplication) of function {{InetAddress::getByName}} and most of the funcition calls are redundant. When the job has a great number of tasks and the speed of DNS resolution is not fast enough, it will take a lot of time at this stage before the job running.
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