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https://issues.apache.org/jira/browse/HDFS-13136?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16373531#comment-16373531
 ] 

genericqa commented on HDFS-13136:
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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 
23s{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 3 new or modified test 
files. {color} |
|| || || || {color:brown} branch-3.0 Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 20m 
55s{color} | {color:green} branch-3.0 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
54s{color} | {color:green} branch-3.0 passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
45s{color} | {color:green} branch-3.0 passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m  
4s{color} | {color:green} branch-3.0 passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
11m 38s{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 
54s{color} | {color:green} branch-3.0 passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
56s{color} | {color:green} branch-3.0 passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 
58s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
50s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
50s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
39s{color} | {color:green} hadoop-hdfs-project/hadoop-hdfs: The patch generated 
0 new + 306 unchanged - 4 fixed = 306 total (was 310) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
55s{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} 
10m 57s{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 
59s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
52s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 89m 32s{color} 
| {color:red} hadoop-hdfs in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
24s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}145m 21s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.hdfs.server.namenode.TestAuditLoggerWithCommands |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:20ca677 |
| JIRA Issue | HDFS-13136 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12911600/HDFS-13136-branch-3.0.001.patch
 |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  
unit  shadedclient  findbugs  checkstyle  |
| uname | Linux e19160d6a097 3.13.0-139-generic #188-Ubuntu SMP Tue Jan 9 
14:43:09 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | branch-3.0 / c2bbe22 |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_151 |
| findbugs | v3.1.0-RC1 |
| unit | 
https://builds.apache.org/job/PreCommit-HDFS-Build/23153/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HDFS-Build/23153/testReport/ |
| Max. process+thread count | 3853 (vs. ulimit of 10000) |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U: 
hadoop-hdfs-project/hadoop-hdfs |
| Console output | 
https://builds.apache.org/job/PreCommit-HDFS-Build/23153/console |
| Powered by | Apache Yetus 0.8.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> Avoid taking FSN lock while doing group member lookup for FSD permission check
> ------------------------------------------------------------------------------
>
>                 Key: HDFS-13136
>                 URL: https://issues.apache.org/jira/browse/HDFS-13136
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>            Reporter: Xiaoyu Yao
>            Assignee: Xiaoyu Yao
>            Priority: Major
>         Attachments: HDFS-13136-branch-3.0.001.patch, HDFS-13136.001.patch, 
> HDFS-13136.002.patch
>
>
> Namenode has FSN lock and FSD lock. Most of the namenode operations need to 
> take FSN lock first and then FSD lock.  The permission check is done via 
> FSPermissionChecker at FSD layer assuming FSN lock is taken. 
> The FSPermissionChecker constructor invokes callerUgi.getGroups() that can 
> take seconds sometimes. There are external cache scheme such SSSD and 
> internal cache scheme for group lookup. However, the delay could still occur 
> during cache refresh, which causes severe FSN lock contentions and 
> unresponsive namenode issues.
> Checking the current code, we found that getBlockLocations(..) did it right 
> but some methods such as getFileInfo(..), getContentSummary(..) did it wrong. 
> This ticket is open to ensure the group lookup for permission checker is 
> outside the FSN lock.  
>  



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