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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9098) Erasure coding: emulate race conditions among striped streamers in write pipeline
Date Sat, 24 Oct 2015 02:18:27 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14972280#comment-14972280
] 

Hadoop QA commented on HDFS-9098:
---------------------------------

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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 28s | 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  9s | There were no new javac warning messages. |
| {color:green}+1{color} | javadoc |  10m 29s | 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 |   2m 40s | The applied patch generated  7 new checkstyle
issues (total was 116, now 122). |
| {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 33s | The patch built with eclipse:eclipse.
|
| {color:red}-1{color} | findbugs |   4m 39s | The patch appears to introduce 3 new Findbugs
(version 3.0.0) warnings. |
| {color:green}+1{color} | native |   3m  8s | Pre-build of native portion |
| {color:red}-1{color} | hdfs tests |  48m 40s | Tests failed in hadoop-hdfs. |
| {color:green}+1{color} | hdfs tests |   0m 34s | Tests passed in hadoop-hdfs-client. |
| | | 101m 19s | |
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|| Reason || Tests ||
| FindBugs | module:hadoop-hdfs-client |
| Failed unit tests | hadoop.hdfs.server.balancer.TestBalancerWithMultipleNameNodes |
|   | hadoop.hdfs.TestStripedDataStreamers |
|   | hadoop.hdfs.TestCrcCorruption |
|   | hadoop.hdfs.server.namenode.TestEditLog |
| Timed out tests | org.apache.hadoop.hdfs.server.datanode.TestDataNodeVolumeFailureReporting
|
|   | org.apache.hadoop.hdfs.server.datanode.TestDataNodeRollingUpgrade |
|   | org.apache.hadoop.hdfs.server.blockmanagement.TestReplicationPolicy |
|   | org.apache.hadoop.hdfs.server.namenode.TestLargeDirectoryDelete |
|   | org.apache.hadoop.hdfs.TestDatanodeDeath |
|   | org.apache.hadoop.hdfs.server.namenode.TestAddOverReplicatedStripedBlocks |
|   | org.apache.hadoop.hdfs.TestDecommission |
|   | org.apache.hadoop.hdfs.server.blockmanagement.TestUnderReplicatedBlocks |
|   | org.apache.hadoop.hdfs.server.blockmanagement.TestBlocksWithNotEnoughRacks |
|   | org.apache.hadoop.hdfs.TestDFSRemove |
|   | org.apache.hadoop.hdfs.server.namenode.TestListCorruptFileBlocks |
|   | org.apache.hadoop.hdfs.server.namenode.TestRecoverStripedBlocks |
|   | org.apache.hadoop.hdfs.TestDFSUpgrade |
|   | org.apache.hadoop.hdfs.server.datanode.TestDataNodeVolumeFailureToleration |
|   | org.apache.hadoop.hdfs.server.namenode.TestGenericJournalConf |
|   | org.apache.hadoop.hdfs.server.datanode.TestFsDatasetCache |
|   | org.apache.hadoop.hdfs.server.datanode.TestDirectoryScanner |
|   | org.apache.hadoop.hdfs.server.namenode.TestDeleteRace |
|   | org.apache.hadoop.hdfs.TestParallelShortCircuitReadUnCached |
|   | org.apache.hadoop.hdfs.server.datanode.TestDataNodeVolumeFailure |
\\
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12768447/HDFS-9098.00.patch
|
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 15eb84b |
| Pre-patch Findbugs warnings | https://builds.apache.org/job/PreCommit-HDFS-Build/13174/artifact/patchprocess/trunkFindbugsWarningshadoop-hdfs.html
|
| checkstyle |  https://builds.apache.org/job/PreCommit-HDFS-Build/13174/artifact/patchprocess/diffcheckstylehadoop-hdfs-client.txt
|
| Findbugs warnings | https://builds.apache.org/job/PreCommit-HDFS-Build/13174/artifact/patchprocess/newPatchFindbugsWarningshadoop-hdfs-client.html
|
| hadoop-hdfs test log | https://builds.apache.org/job/PreCommit-HDFS-Build/13174/artifact/patchprocess/testrun_hadoop-hdfs.txt
|
| hadoop-hdfs-client test log | https://builds.apache.org/job/PreCommit-HDFS-Build/13174/artifact/patchprocess/testrun_hadoop-hdfs-client.txt
|
| Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/13174/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/13174/console |


This message was automatically generated.

> Erasure coding: emulate race conditions among striped streamers in write pipeline
> ---------------------------------------------------------------------------------
>
>                 Key: HDFS-9098
>                 URL: https://issues.apache.org/jira/browse/HDFS-9098
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: erasure-coding
>    Affects Versions: 3.0.0
>            Reporter: Zhe Zhang
>            Assignee: Zhe Zhang
>         Attachments: HDFS-9098.00.patch, HDFS-9098.wip.patch
>
>
> Apparently the interleaving of events among {{StripedDataStreamer}}'s is very tricky
to handle. [~walter.k.su] and [~jingzhao] have discussed several race conditions under HDFS-9040.
> Let's use FaultInjector to emulate different combinations of interleaved events.
> In particular, we should consider inject delays in the following places:
> # {{Streamer#endBlock}}
> # {{Streamer#locateFollowingBlock}}
> # {{Streamer#updateBlockForPipeline}}
> # {{Streamer#updatePipeline}}
> # {{OutputStream#writeChunk}}
> # {{OutputStream#close}}



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