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https://issues.apache.org/jira/browse/YARN-8771?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16620469#comment-16620469
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Hadoop QA commented on YARN-8771:
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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
26s{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} 22m
9s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
50s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
40s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m
51s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green}
13m 16s{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} 1m
18s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
29s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m
45s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
41s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m
41s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
33s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m
44s{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}
12m 59s{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} 1m
19s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
27s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 73m
46s{color} | {color:green} hadoop-yarn-server-resourcemanager in the patch
passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
30s{color} | {color:green} The patch does not generate ASF License warnings.
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| {color:black}{color} | {color:black} {color} | {color:black}131m 20s{color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:4b8c2b1 |
| JIRA Issue | YARN-8771 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12940394/YARN-8771.004.patch |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall
mvnsite unit shadedclient findbugs checkstyle |
| uname | Linux 1ac8077cf8a5 3.13.0-153-generic #203-Ubuntu SMP Thu Jun 14
08:52:28 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / e435e12 |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_181 |
| findbugs | v3.1.0-RC1 |
| Test Results |
https://builds.apache.org/job/PreCommit-YARN-Build/21880/testReport/ |
| Max. process+thread count | 903 (vs. ulimit of 10000) |
| 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/21880/console |
| Powered by | Apache Yetus 0.8.0 http://yetus.apache.org |
This message was automatically generated.
> CapacityScheduler fails to unreserve when cluster resource contains empty
> resource type
> ---------------------------------------------------------------------------------------
>
> Key: YARN-8771
> URL: https://issues.apache.org/jira/browse/YARN-8771
> Project: Hadoop YARN
> Issue Type: Bug
> Components: capacityscheduler
> Affects Versions: 3.2.0
> Reporter: Tao Yang
> Assignee: Tao Yang
> Priority: Critical
> Attachments: YARN-8771.001.patch, YARN-8771.002.patch,
> YARN-8771.003.patch, YARN-8771.004.patch
>
>
> We found this problem when cluster is almost but not exhausted (93% used),
> scheduler kept allocating for an app but always fail to commit, this can
> blocking requests from other apps and parts of cluster resource can't be used.
> Reproduce this problem:
> (1) use DominantResourceCalculator
> (2) cluster resource has empty resource type, for example: gpu=0
> (3) scheduler allocates container for app1 who has reserved containers and
> whose queue limit or user limit reached(used + required > limit).
> Reference codes in RegularContainerAllocator#assignContainer:
> {code:java}
> // How much need to unreserve equals to:
> // max(required - headroom, amountNeedUnreserve)
> Resource headRoom = Resources.clone(currentResoureLimits.getHeadroom());
> Resource resourceNeedToUnReserve =
> Resources.max(rc, clusterResource,
> Resources.subtract(capability, headRoom),
> currentResoureLimits.getAmountNeededUnreserve());
> boolean needToUnreserve =
> Resources.greaterThan(rc, clusterResource,
> resourceNeedToUnReserve, Resources.none());
> {code}
> For example, resourceNeedToUnReserve can be <8GB, -6 cores, 0 gpu> when
> {{headRoom=<0GB, 8 vcores, 0 gpu>}} and {{capacity=<8GB, 2 vcores, 0 gpu>}},
> needToUnreserve which is the result of {{Resources#greaterThan}} will be
> {{false}}. This is not reasonable because required resource did exceed the
> headroom and unreserve is needed.
> After that, when reaching the unreserve process in
> RegularContainerAllocator#assignContainer, unreserve process will be skipped
> when shouldAllocOrReserveNewContainer is true (when required containers >
> reserved containers) and needToUnreserve is wrongly calculated to be false:
> {code:java}
> if (availableContainers > 0) {
> if (rmContainer == null && reservationsContinueLooking
> && node.getLabels().isEmpty()) {
> // unreserve process can be wrongly skipped when
> shouldAllocOrReserveNewContainer=true and needToUnreserve=false but required
> resource did exceed the headroom
> if (!shouldAllocOrReserveNewContainer || needToUnreserve) {
> ...
> }
> }
> }
> {code}
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