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https://issues.apache.org/jira/browse/YARN-9246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17360978#comment-17360978
 ] 

Hadoop QA commented on YARN-9246:
---------------------------------

| (/) *{color:green}+1 overall{color}* |
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|| Vote || Subsystem || Runtime ||  Logfile || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  1m 
11s{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:blue}0{color} | {color:blue} codespell {color} | {color:blue}  0m  
0s{color} |  | {color:blue} codespell was not available. {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} 32m 
25s{color} |  | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
39s{color} |  | {color:green} trunk passed with JDK 
Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
34s{color} |  | {color:green} trunk passed with JDK Private 
Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
29s{color} |  | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
35s{color} |  | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
29s{color} |  | {color:green} trunk passed with JDK 
Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
28s{color} |  | {color:green} trunk passed with JDK Private 
Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 {color} |
| {color:green}+1{color} | {color:green} spotbugs {color} | {color:green}  0m 
59s{color} |  | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
15m 45s{color} |  | {color:green} branch has no errors when building and 
testing our client artifacts. {color} |
| {color:orange}-0{color} | {color:orange} patch {color} | {color:orange} 16m  
7s{color} |  | {color:orange} Used diff version of patch file. Binary files and 
potentially other changes not applied. Please rebase and squash commits if 
necessary. {color} |
|| || || || {color:brown} Patch Compile Tests {color} || ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 
30s{color} |  | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
30s{color} |  | {color:green} the patch passed with JDK 
Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
30s{color} |  | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
24s{color} |  | {color:green} the patch passed with JDK Private 
Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
24s{color} |  | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} blanks {color} | {color:green}  0m  
0s{color} |  | {color:green} The patch has no blanks issues. {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  
0m 18s{color} | 
[/results-checkstyle-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-client.txt|https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3094/2/artifact/out/results-checkstyle-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-client.txt]
 | {color:orange} hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client: The patch 
generated 27 new + 0 unchanged - 0 fixed = 27 total (was 0) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
27s{color} |  | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
22s{color} |  | {color:green} the patch passed with JDK 
Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
19s{color} |  | {color:green} the patch passed with JDK Private 
Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 {color} |
| {color:green}+1{color} | {color:green} spotbugs {color} | {color:green}  0m 
59s{color} |  | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
14m 59s{color} |  | {color:green} patch has no errors when building and testing 
our client artifacts. {color} |
|| || || || {color:brown} Other Tests {color} || ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 27m 
54s{color} |  | {color:green} hadoop-yarn-client in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
38s{color} |  | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}102m 11s{color} | 
 | {color:black}{color} |
\\
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|| Subsystem || Report/Notes ||
| Docker | ClientAPI=1.41 ServerAPI=1.41 base: 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3094/2/artifact/out/Dockerfile
 |
| GITHUB PR | https://github.com/apache/hadoop/pull/3094 |
| JIRA Issue | YARN-9246 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite 
unit shadedclient spotbugs checkstyle codespell |
| uname | Linux 1a1c0444d675 4.15.0-65-generic #74-Ubuntu SMP Tue Sep 17 
17:06:04 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / 6b2a3fa3ccc969f643546f7e8e4e6116ac08c9fa |
| Default Java | Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 |
| Multi-JDK versions | 
/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04 
/usr/lib/jvm/java-8-openjdk-amd64:Private 
Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 |
|  Test Results | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3094/2/testReport/ |
| Max. process+thread count | 656 (vs. ulimit of 5500) |
| modules | C: hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client U: 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client |
| Console output | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3094/2/console |
| versions | git=2.25.1 maven=3.6.3 spotbugs=4.2.2 |
| Powered by | Apache Yetus 0.14.0-SNAPSHOT https://yetus.apache.org |


This message was automatically generated.



> NPE when executing a command yarn node -status or -states without additional 
> arguments
> --------------------------------------------------------------------------------------
>
>                 Key: YARN-9246
>                 URL: https://issues.apache.org/jira/browse/YARN-9246
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: client
>            Reporter: Masahiro Tanaka
>            Assignee: Masahiro Tanaka
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 3.3.0, 3.2.3
>
>         Attachments: YARN-9246.001.patch, YARN-9246.002.patch
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> yarn node command should not print NPE even if there are some missing 
> arguments.
> {code}
> ubuntu@ip-172-31-0-78:~/hadoop-3.3.0-SNAPSHOT$ ./bin/yarn node -states
> Missing argument for options
> usage: node
>  -all Works with -list to list all nodes.
>  -help Displays help for all commands.
>  -list List all running nodes. Supports optional use of
>  -states to filter nodes based on node state, all -all
>  to list all nodes, -showDetails to display more
>  details about each node.
>  -showDetails Works with -list to show more details about each node.
>  -states <States> Works with -list to filter nodes based on input
>  comma-separated list of node states. The valid node
>  state can be one of the following:
>  NEW,RUNNING,UNHEALTHY,DECOMMISSIONED,LOST,REBOOTED,DEC
>  OMMISSIONING,SHUTDOWN.
>  -status <NodeId> Prints the status report of the node.
> Exception in thread "main" java.lang.NullPointerException
>  at org.apache.hadoop.yarn.client.cli.YarnCLI.stop(YarnCLI.java:75)
>  at org.apache.hadoop.yarn.client.cli.NodeCLI.main(NodeCLI.java:63)
> ubuntu@ip-172-31-0-78:~/hadoop-3.3.0-SNAPSHOT$ ./bin/yarn node -status
> Missing argument for options
> usage: node
>  -all Works with -list to list all nodes.
>  -help Displays help for all commands.
>  -list List all running nodes. Supports optional use of
>  -states to filter nodes based on node state, all -all
>  to list all nodes, -showDetails to display more
>  details about each node.
>  -showDetails Works with -list to show more details about each node.
>  -states <States> Works with -list to filter nodes based on input
>  comma-separated list of node states. The valid node
>  state can be one of the following:
>  NEW,RUNNING,UNHEALTHY,DECOMMISSIONED,LOST,REBOOTED,DEC
>  OMMISSIONING,SHUTDOWN.
>  -status <NodeId> Prints the status report of the node.
> Exception in thread "main" java.lang.NullPointerException
>  at org.apache.hadoop.yarn.client.cli.YarnCLI.stop(YarnCLI.java:75)
>  at org.apache.hadoop.yarn.client.cli.NodeCLI.main(NodeCLI.java:63)
> ubuntu@ip-172-31-0-78:~/hadoop-3.3.0-SNAPSHOT$
> {code}



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