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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-15976) NameNode Performance degradation When Single LdapServer become a bottleneck in Ldap-based mapping module
Date Wed, 05 Dec 2018 10:16:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-15976?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16709871#comment-16709871
] 

Hadoop QA commented on HADOOP-15976:
------------------------------------

| (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 17s{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: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} 24m 49s{color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 15m 49s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 47s{color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m 12s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 13m  2s{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 37s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 59s{color} |
{color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 49s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 15m 12s{color} |
{color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} javac {color} | {color:red} 15m 12s{color} | {color:red}
root generated 3 new + 1487 unchanged - 3 fixed = 1490 total (was 1490) {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  0m 45s{color}
| {color:orange} hadoop-common-project/hadoop-common: The patch generated 6 new + 24 unchanged
- 0 fixed = 30 total (was 24) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m  6s{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 43s{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 48s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 57s{color} |
{color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red}  8m  2s{color} | {color:red}
hadoop-common in the patch failed. {color} |
| {color:red}-1{color} | {color:red} asflicense {color} | {color:red}  0m 40s{color} | {color:red}
The patch generated 1 ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 98m 20s{color} | {color:black}
{color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.security.ssl.TestSSLFactory |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:8f97d6f |
| JIRA Issue | HADOOP-15976 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12950661/HADOOP-15976.patch
|
| Optional Tests |  dupname  asflicense  compile  javac  javadoc  mvninstall  mvnsite  unit
 shadedclient  findbugs  checkstyle  |
| uname | Linux 99b3a44f3f25 4.4.0-138-generic #164-Ubuntu SMP Tue Oct 2 17:16:02 UTC 2018
x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 228156c |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_191 |
| findbugs | v3.1.0-RC1 |
| javac | https://builds.apache.org/job/PreCommit-HADOOP-Build/15611/artifact/out/diff-compile-javac-root.txt
|
| checkstyle | https://builds.apache.org/job/PreCommit-HADOOP-Build/15611/artifact/out/diff-checkstyle-hadoop-common-project_hadoop-common.txt
|
| unit | https://builds.apache.org/job/PreCommit-HADOOP-Build/15611/artifact/out/patch-unit-hadoop-common-project_hadoop-common.txt
|
|  Test Results | https://builds.apache.org/job/PreCommit-HADOOP-Build/15611/testReport/ |
| asflicense | https://builds.apache.org/job/PreCommit-HADOOP-Build/15611/artifact/out/patch-asflicense-problems.txt
|
| Max. process+thread count | 1409 (vs. ulimit of 10000) |
| modules | C: hadoop-common-project/hadoop-common U: hadoop-common-project/hadoop-common
|
| Console output | https://builds.apache.org/job/PreCommit-HADOOP-Build/15611/console |
| Powered by | Apache Yetus 0.8.0   http://yetus.apache.org |


This message was automatically generated.



> NameNode Performance degradation When Single LdapServer become a  bottleneck in Ldap-based
mapping module 
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-15976
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15976
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: common
>    Affects Versions: 3.1.1
>            Reporter: fengyongshe
>            Priority: Major
>         Attachments: HADOOP-15976.patch, image003(12-05-1(12-05-10-36-26).jpg
>
>
> 2000+ nodes cluster, We use OpenLdap to manager users and groups . when LdapGroupsMapping
used , Group look-up cause segment fault include NameNode Performance degradation & name
node crashes . 
> WARN security.Groups: Potential performance problem:
>  getGroups(user=xxxx) took 46817 milliseconds.
>  INFO namenode.FSNamesysatem(FSNamesystemLoclk.java:writeUnlock(252))- FSNameSystem write
lock held for 46817 ms via java.lang.thread.getStackTrace
> We Found the Ldap Server become the bottleneck for NN operations, Single Ldap Server 
only support hundred request per seconds
> ps. The Server was running nslcd 



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