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From "genericqa (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9023) When NN is not able to identify DN for replication, reason behind it can be logged
Date Thu, 28 Dec 2017 10:06:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16305279#comment-16305279
] 

genericqa commented on HDFS-9023:
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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 16s{color} | {color:blue}
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|| || || || {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} 16m 33s{color}
| {color:green} trunk passed {color} |
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{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 39s{color}
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| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 58s{color} |
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| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 11m 29s{color}
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| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  1m 52s{color} | {color:red}
hadoop-hdfs-project/hadoop-hdfs in trunk has 1 extant Findbugs warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 50s{color} |
{color:green} trunk passed {color} |
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| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 58s{color}
| {color:green} the patch passed {color} |
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{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 51s{color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 36s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 55s{color} |
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| {color:green} patch has no errors when building and testing our client artifacts. {color}
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| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  1m 58s{color} |
{color:green} the patch passed {color} |
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{color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red}112m 22s{color} | {color:red}
hadoop-hdfs in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 22s{color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black}163m  4s{color} | {color:black}
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:5b98639 |
| JIRA Issue | HDFS-9023 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12903826/HDFS-9023.03.patch
|
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  unit  shadedclient
 findbugs  checkstyle  |
| uname | Linux cc1f2cc72332 3.13.0-135-generic #184-Ubuntu SMP Wed Oct 18 11:55:51 UTC 2017
x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / d31c9d8 |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_151 |
| findbugs | v3.1.0-RC1 |
| findbugs | https://builds.apache.org/job/PreCommit-HDFS-Build/22515/artifact/out/branch-findbugs-hadoop-hdfs-project_hadoop-hdfs-warnings.html
|
| unit | https://builds.apache.org/job/PreCommit-HDFS-Build/22515/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt
|
|  Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/22515/testReport/ |
| Max. process+thread count | 3375 (vs. ulimit of 5000) |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U: hadoop-hdfs-project/hadoop-hdfs |
| Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/22515/console |
| Powered by | Apache Yetus 0.7.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> When NN is not able to identify DN for replication, reason behind it can be logged
> ----------------------------------------------------------------------------------
>
>                 Key: HDFS-9023
>                 URL: https://issues.apache.org/jira/browse/HDFS-9023
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs-client, namenode
>    Affects Versions: 2.7.1
>            Reporter: Surendra Singh Lilhore
>            Assignee: Xiao Chen
>            Priority: Critical
>         Attachments: HDFS-9023.01.patch, HDFS-9023.02.patch, HDFS-9023.03.patch
>
>
> When NN is not able to identify DN for replication, reason behind it can be logged (at
least critical information why DNs not chosen like disk is full). At present it is expected
to enable debug log.
> For example the reason for below error looks like all 7 DNs are busy for data writes.
But at client or NN side no hint is given in the log message.
> {noformat}
> File /tmp/logs/spark/logs/application_1437051383180_0610/xyz-195_26009.tmp could only
be replicated to 0 nodes instead of minReplication (=1).  There are 7 datanode(s) running
and no node(s) are excluded in this operation.
> 	at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:1553)

> {noformat}



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