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https://issues.apache.org/jira/browse/YARN-6959?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16118022#comment-16118022
]
Hadoop QA commented on YARN-6959:
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| (/) *{color:green}+1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m
18s{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: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:brown} trunk Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 14m
35s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
35s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
31s{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} findbugs {color} | {color:green} 0m
59s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
22s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m
33s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
31s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m
31s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
27s{color} | {color:green}
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager:
The patch generated 0 new + 390 unchanged - 4 fixed = 390 total (was 394)
{color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m
34s{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} 1m
7s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
19s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 43m
33s{color} | {color:green} hadoop-yarn-server-resourcemanager in the patch
passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
16s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 66m 32s{color} |
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Image:yetus/hadoop:14b5c93 |
| JIRA Issue | YARN-6959 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12880793/YARN-6959.005.patch |
| Optional Tests | asflicense compile javac javadoc mvninstall mvnsite
unit findbugs checkstyle |
| uname | Linux d4cc7d8b7fe4 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 / 55a181f |
| Default Java | 1.8.0_131 |
| findbugs | v3.1.0-RC1 |
| Test Results |
https://builds.apache.org/job/PreCommit-YARN-Build/16768/testReport/ |
| modules | C:
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
U:
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
|
| Console output |
https://builds.apache.org/job/PreCommit-YARN-Build/16768/console |
| Powered by | Apache Yetus 0.6.0-SNAPSHOT http://yetus.apache.org |
This message was automatically generated.
> RM may allocate wrong AM Container for new attempt
> --------------------------------------------------
>
> Key: YARN-6959
> URL: https://issues.apache.org/jira/browse/YARN-6959
> Project: Hadoop YARN
> Issue Type: Bug
> Components: capacity scheduler, fairscheduler, scheduler
> Affects Versions: 2.7.1
> Reporter: Yuqi Wang
> Assignee: Yuqi Wang
> Labels: patch
> Fix For: 2.7.1, 3.0.0-alpha4
>
> Attachments: YARN-6959.001.patch, YARN-6959.002.patch,
> YARN-6959.003.patch, YARN-6959.004.patch, YARN-6959.005.patch,
> YARN-6959-branch-2.7.001.patch
>
>
> *Issue Summary:*
> Previous attempt ResourceRequest may be recorded into current attempt
> ResourceRequests. These mis-recorded ResourceRequests may confuse AM
> Container Request and Allocation for current attempt.
> *Issue Pipeline:*
> {code:java}
> // Executing precondition check for the incoming attempt id.
> ApplicationMasterService.allocate() ->
> scheduler.allocate(attemptId, ask, ...) ->
> // Previous precondition check for the attempt id may be outdated here,
> // i.e. the currentAttempt may not be the corresponding attempt of the
> attemptId.
> // Such as the attempt id is corresponding to the previous attempt.
> currentAttempt = scheduler.getApplicationAttempt(attemptId) ->
> // Previous attempt ResourceRequest may be recorded into current attempt
> ResourceRequests
> currentAttempt.updateResourceRequests(ask) ->
> // RM may allocate wrong AM Container for the current attempt, because its
> ResourceRequests
> // may come from previous attempt which can be any ResourceRequests previous
> AM asked
> // and there is not matching logic for the original AM Container
> ResourceRequest and
> // the returned amContainerAllocation below.
> AMContainerAllocatedTransition.transition(...) ->
> amContainerAllocation = scheduler.allocate(currentAttemptId, ...)
> {code}
> *Patch Correctness:*
> Because after this Patch, RM will definitely record ResourceRequests from
> different attempt into different objects of
> SchedulerApplicationAttempt.AppSchedulingInfo.
> So, even if RM still record ResourceRequests from old attempt at any time,
> these ResourceRequests will be recorded in old AppSchedulingInfo object which
> will not impact current attempt's resource requests and allocation.
> *Concerns:*
> The getApplicationAttempt function in AbstractYarnScheduler is so confusing,
> we should better rename it to getCurrentApplicationAttempt. And reconsider
> whether there are any other bugs related to getApplicationAttempt.
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