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https://issues.apache.org/jira/browse/HDFS-9079?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14964359#comment-14964359
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Hadoop QA commented on HDFS-9079:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:red}-1{color} | pre-patch | 21m 1s | 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 43s | There were no new javac warning
messages. |
| {color:green}+1{color} | javadoc | 11m 21s | 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:red}-1{color} | checkstyle | 3m 4s | The applied patch generated
96 new checkstyle issues (total was 91, now 181). |
| {color:green}+1{color} | whitespace | 0m 1s | The patch has no lines that
end in whitespace. |
| {color:green}+1{color} | install | 1m 36s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse | 0m 38s | The patch built with
eclipse:eclipse. |
| {color:red}-1{color} | findbugs | 4m 38s | The patch appears to introduce 3
new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | native | 3m 9s | Pre-build of native portion |
| {color:red}-1{color} | hdfs tests | 50m 20s | Tests failed in hadoop-hdfs. |
| {color:green}+1{color} | hdfs tests | 0m 32s | Tests passed in
hadoop-hdfs-client. |
| | | 105m 32s | |
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|| Reason || Tests ||
| FindBugs | module:hadoop-hdfs-client |
| Failed unit tests | hadoop.hdfs.server.blockmanagement.TestNodeCount |
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|| Subsystem || Report/Notes ||
| Patch URL |
http://issues.apache.org/jira/secure/attachment/12767496/HDFS-9079.04.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 8175c4f |
| Pre-patch Findbugs warnings |
https://builds.apache.org/job/PreCommit-HDFS-Build/13062/artifact/patchprocess/trunkFindbugsWarningshadoop-hdfs.html
|
| checkstyle |
https://builds.apache.org/job/PreCommit-HDFS-Build/13062/artifact/patchprocess/diffcheckstylehadoop-hdfs-client.txt
|
| Findbugs warnings |
https://builds.apache.org/job/PreCommit-HDFS-Build/13062/artifact/patchprocess/newPatchFindbugsWarningshadoop-hdfs-client.html
|
| hadoop-hdfs test log |
https://builds.apache.org/job/PreCommit-HDFS-Build/13062/artifact/patchprocess/testrun_hadoop-hdfs.txt
|
| hadoop-hdfs-client test log |
https://builds.apache.org/job/PreCommit-HDFS-Build/13062/artifact/patchprocess/testrun_hadoop-hdfs-client.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HDFS-Build/13062/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/13062/console |
This message was automatically generated.
> Erasure coding: preallocate multiple generation stamps and serialize updates
> from data streamers
> ------------------------------------------------------------------------------------------------
>
> Key: HDFS-9079
> URL: https://issues.apache.org/jira/browse/HDFS-9079
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: erasure-coding
> Affects Versions: HDFS-7285
> Reporter: Zhe Zhang
> Assignee: Zhe Zhang
> Attachments: HDFS-9079-HDFS-7285.00.patch, HDFS-9079.01.patch,
> HDFS-9079.02.patch, HDFS-9079.03.patch, HDFS-9079.04.patch
>
>
> A non-striped DataStreamer goes through the following steps in error handling:
> {code}
> 1) Finds error => 2) Asks NN for new GS => 3) Gets new GS from NN => 4)
> Applies new GS to DN (createBlockOutputStream) => 5) Ack from DN => 6)
> Updates block on NN
> {code}
> To simplify the above we can preallocate GS when NN creates a new striped
> block group ({{FSN#createNewBlock}}). For each new striped block group we can
> reserve {{NUM_PARITY_BLOCKS}} GS's. Then steps 1~3 in the above sequence can
> be saved. If more than {{NUM_PARITY_BLOCKS}} errors have happened we
> shouldn't try to further recover anyway.
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