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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7433) Optimize performance of DatanodeManager's node map
Date Fri, 08 May 2015 20:37:01 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14535453#comment-14535453
] 

Hadoop QA commented on HDFS-7433:
---------------------------------

\\
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  14m 38s | Pre-patch trunk compilation is healthy. |
| {color:green}+1{color} | @author |   0m  0s | The patch does not contain any @author tags.
|
| {color:red}-1{color} | tests included |   0m  0s | 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:green}+1{color} | javac |   7m 30s | There were no new javac warning messages. |
| {color:green}+1{color} | javadoc |   9m 42s | There were no new javadoc warning messages.
|
| {color:green}+1{color} | release audit |   0m 23s | The applied patch does not increase
the total number of release audit warnings. |
| {color:red}-1{color} | checkstyle |   0m 37s | The applied patch generated  1288 new checkstyle
issues (total was 2219, now 1807). |
| {color:red}-1{color} | whitespace |   0m  3s | The patch has 8  line(s) that end in whitespace.
Use git apply --whitespace=fix. |
| {color:green}+1{color} | install |   1m 37s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 33s | The patch built with eclipse:eclipse.
|
| {color:green}+1{color} | findbugs |   3m  4s | The patch does not introduce any new Findbugs
(version 2.0.3) warnings. |
| {color:green}+1{color} | native |   3m 15s | Pre-build of native portion |
| {color:red}-1{color} | hdfs tests | 165m 27s | Tests failed in hadoop-hdfs. |
| | | 206m 54s | |
\\
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|| Reason || Tests ||
| Failed unit tests | hadoop.tracing.TestTraceAdmin |
\\
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12703937/HDFS-7433.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / cd6b26c |
| checkstyle |  https://builds.apache.org/job/PreCommit-HDFS-Build/10874/artifact/patchprocess/diffcheckstylehadoop-hdfs.txt
|
| whitespace | https://builds.apache.org/job/PreCommit-HDFS-Build/10874/artifact/patchprocess/whitespace.txt
|
| hadoop-hdfs test log | https://builds.apache.org/job/PreCommit-HDFS-Build/10874/artifact/patchprocess/testrun_hadoop-hdfs.txt
|
| Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/10874/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf900.gq1.ygridcore.net 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed Sep
3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux |
| Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/10874/console |


This message was automatically generated.

> Optimize performance of DatanodeManager's node map
> --------------------------------------------------
>
>                 Key: HDFS-7433
>                 URL: https://issues.apache.org/jira/browse/HDFS-7433
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>    Affects Versions: 2.0.0-alpha, 3.0.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>            Priority: Critical
>              Labels: BB2015-05-TBR
>             Fix For: 2.8.0
>
>         Attachments: HDFS-7433.patch, HDFS-7433.patch, HDFS-7433.patch, HDFS-7433.patch
>
>
> The datanode map is currently a {{TreeMap}}.  For many thousands of datanodes, tree lookups
are ~10X more expensive than a {{HashMap}}.  Insertions and removals are up to 100X more expensive.



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