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https://issues.apache.org/jira/browse/HDFS-9259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14976578#comment-14976578
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Hadoop QA commented on HDFS-9259:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:red}-1{color} | pre-patch | 20m 13s | Pre-patch trunk has 1 extant
Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | @author | 0m 0s | The patch does not contain any
@author tags. |
| {color:green}+1{color} | tests included | 0m 0s | The patch appears to
include 1 new or modified test files. |
| {color:green}+1{color} | javac | 8m 4s | There were no new javac warning
messages. |
| {color:green}+1{color} | javadoc | 10m 33s | There were no new javadoc
warning messages. |
| {color:green}+1{color} | release audit | 0m 25s | The applied patch does
not increase the total number of release audit warnings. |
| {color:green}+1{color} | checkstyle | 2m 43s | There were no new checkstyle
issues. |
| {color:green}+1{color} | whitespace | 0m 0s | The patch has no lines that
end in whitespace. |
| {color:green}+1{color} | install | 1m 33s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse | 0m 34s | The patch built with
eclipse:eclipse. |
| {color:green}+1{color} | findbugs | 4m 29s | The patch does not introduce
any new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | native | 3m 12s | Pre-build of native portion |
| {color:red}-1{color} | hdfs tests | 49m 23s | Tests failed in hadoop-hdfs. |
| {color:green}+1{color} | hdfs tests | 0m 32s | Tests passed in
hadoop-hdfs-client. |
| | | 101m 44s | |
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|| Reason || Tests ||
| Failed unit tests |
hadoop.hdfs.server.balancer.TestBalancerWithMultipleNameNodes |
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|| Subsystem || Report/Notes ||
| Patch URL |
http://issues.apache.org/jira/secure/attachment/12768842/HDFS-9259.001.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / bcb2386 |
| Pre-patch Findbugs warnings |
https://builds.apache.org/job/PreCommit-HDFS-Build/13224/artifact/patchprocess/trunkFindbugsWarningshadoop-hdfs.html
|
| hadoop-hdfs test log |
https://builds.apache.org/job/PreCommit-HDFS-Build/13224/artifact/patchprocess/testrun_hadoop-hdfs.txt
|
| hadoop-hdfs-client test log |
https://builds.apache.org/job/PreCommit-HDFS-Build/13224/artifact/patchprocess/testrun_hadoop-hdfs-client.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HDFS-Build/13224/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf904.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/13224/console |
This message was automatically generated.
> Make SO_SNDBUF size configurable at DFSClient side for hdfs write scenario
> --------------------------------------------------------------------------
>
> Key: HDFS-9259
> URL: https://issues.apache.org/jira/browse/HDFS-9259
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Ming Ma
> Assignee: Mingliang Liu
> Attachments: HDFS-9259.000.patch, HDFS-9259.001.patch
>
>
> We recently found that cross-DC hdfs write could be really slow. Further
> investigation identified that is due to SendBufferSize and ReceiveBufferSize
> used for hdfs write. The test ran "hadoop -fs -copyFromLocal" of a 256MB file
> across DC with different SendBufferSize and ReceiveBufferSize values. The
> results showed that c much faster than b; b is faster than a.
> a. SendBufferSize=128k, ReceiveBufferSize=128k (hdfs default setting).
> b. SendBufferSize=128K, ReceiveBufferSize=not set(TCP auto tuning).
> c. SendBufferSize=not set, ReceiveBufferSize=not set(TCP auto tuning for both)
> HDFS-8829 has enabled scenario b. We would like to enable scenario c by
> making SendBufferSize configurable at DFSClient side. Cc: [~cmccabe] [~He
> Tianyi] [~kanaka] [~vinayrpet].
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