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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8320) Erasure coding: consolidate striping-related terminologies
Date Tue, 19 May 2015 06:37:03 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14549884#comment-14549884
] 

Hadoop QA commented on HDFS-8320:
---------------------------------

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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  15m  5s | Pre-patch HDFS-7285 compilation is healthy.
|
| {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 3 new
or modified test files. |
| {color:green}+1{color} | javac |   7m 58s | There were no new javac warning messages. |
| {color:green}+1{color} | javadoc |  12m  1s | There were no new javadoc warning messages.
|
| {color:red}-1{color} | release audit |   0m 16s | The applied patch generated 1 release
audit warnings. |
| {color:green}+1{color} | checkstyle |   0m 40s | There were no new checkstyle issues. |
| {color:green}+1{color} | whitespace |   0m  2s | The patch has no lines that end in whitespace.
|
| {color:green}+1{color} | install |   1m 58s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 38s | The patch built with eclipse:eclipse.
|
| {color:red}-1{color} | findbugs |   3m 50s | The patch appears to introduce 7 new Findbugs
(version 3.0.0) warnings. |
| {color:green}+1{color} | native |   3m 49s | Pre-build of native portion |
| {color:red}-1{color} | hdfs tests | 109m 52s | Tests failed in hadoop-hdfs. |
| | | 156m 15s | |
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|| Reason || Tests ||
| FindBugs | module:hadoop-hdfs |
|  |  Inconsistent synchronization of org.apache.hadoop.hdfs.DFSOutputStream.streamer; locked
89% of time  Unsynchronized access at DFSOutputStream.java:89% of time  Unsynchronized access
at DFSOutputStream.java:[line 146] |
|  |  Possible null pointer dereference of arr$ in org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoStripedUnderConstruction.initializeBlockRecovery(long)
 Dereferenced at BlockInfoStripedUnderConstruction.java:arr$ in org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoStripedUnderConstruction.initializeBlockRecovery(long)
 Dereferenced at BlockInfoStripedUnderConstruction.java:[line 194] |
|  |  Unread field:field be static?  At ErasureCodingWorker.java:[line 252] |
|  |  Should org.apache.hadoop.hdfs.server.datanode.erasurecode.ErasureCodingWorker$StripedReader
be a _static_ inner class?  At ErasureCodingWorker.java:inner class?  At ErasureCodingWorker.java:[lines
913-915] |
|  |  Found reliance on default encoding in org.apache.hadoop.hdfs.server.namenode.ErasureCodingZoneManager.createErasureCodingZone(String,
ECSchema):in org.apache.hadoop.hdfs.server.namenode.ErasureCodingZoneManager.createErasureCodingZone(String,
ECSchema): String.getBytes()  At ErasureCodingZoneManager.java:[line 117] |
|  |  Found reliance on default encoding in org.apache.hadoop.hdfs.server.namenode.ErasureCodingZoneManager.getECZoneInfo(INodesInPath):in
org.apache.hadoop.hdfs.server.namenode.ErasureCodingZoneManager.getECZoneInfo(INodesInPath):
new String(byte[])  At ErasureCodingZoneManager.java:[line 81] |
|  |  Result of integer multiplication cast to long in org.apache.hadoop.hdfs.util.StripedBlockUtil.constructInternalBlock(LocatedStripedBlock,
int, int, int, int)  At StripedBlockUtil.java:to long in org.apache.hadoop.hdfs.util.StripedBlockUtil.constructInternalBlock(LocatedStripedBlock,
int, int, int, int)  At StripedBlockUtil.java:[line 108] |
| Failed unit tests | hadoop.hdfs.server.namenode.metrics.TestNameNodeMetrics |
|   | hadoop.hdfs.server.namenode.TestAuditLogs |
|   | hadoop.hdfs.server.namenode.TestFileTruncate |
| Timed out tests | org.apache.hadoop.hdfs.TestDistributedFileSystem |
|   | org.apache.hadoop.hdfs.server.namenode.TestHostsFiles |
\\
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12733703/HDFS-8320-HDFS-7285.02.patch
|
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | HDFS-7285 / b596edc |
| Release Audit | https://builds.apache.org/job/PreCommit-HDFS-Build/11044/artifact/patchprocess/patchReleaseAuditProblems.txt
|
| Findbugs warnings | https://builds.apache.org/job/PreCommit-HDFS-Build/11044/artifact/patchprocess/newPatchFindbugsWarningshadoop-hdfs.html
|
| hadoop-hdfs test log | https://builds.apache.org/job/PreCommit-HDFS-Build/11044/artifact/patchprocess/testrun_hadoop-hdfs.txt
|
| Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/11044/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf903.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/11044/console |


This message was automatically generated.

> Erasure coding: consolidate striping-related terminologies
> ----------------------------------------------------------
>
>                 Key: HDFS-8320
>                 URL: https://issues.apache.org/jira/browse/HDFS-8320
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Zhe Zhang
>            Assignee: Zhe Zhang
>         Attachments: HDFS-8320-HDFS-7285.00.patch, HDFS-8320-HDFS-7285.01.patch, HDFS-8320-HDFS-7285.02.patch,
HDFS-8320-HDFS-7285.03.patch
>
>
> Right now we are doing striping-based I/O in a number of places:
> # Client output stream (HDFS-7889)
> # Client input stream
> #* pread (HDFS-7782, HDFS-7678)
> #* stateful read (HDFS-8033, HDFS-8281, HDFS-8319)
> # DN reconstruction (HDFS-7348)
> In each place we use one or multiple of the following terminologies:
> # Cell
> # Stripe
> # Block group
> # Internal block
> # Chunk
> This JIRA aims to systematically define these terminologies in relation with each other
and in the context of the containing file. For example, a cell belong to stripe _i_ and internal
block _j_ can be indexed as {{(i, j)}} and its logical index _k_ in the file can be calculated.
> With the above consolidation, hopefully we can further consolidate striping I/O codes.



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