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https://issues.apache.org/jira/browse/HDFS-8580?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14585734#comment-14585734
 ] 

Hadoop QA commented on HDFS-8580:
---------------------------------

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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:red}-1{color} | pre-patch |  15m 26s | Findbugs (version ) appears to 
be broken on HDFS-7285. |
| {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 4 new or modified test files. |
| {color:green}+1{color} | javac |   7m 32s | There were no new javac warning 
messages. |
| {color:green}+1{color} | javadoc |   9m 46s | There were no new javadoc 
warning messages. |
| {color:red}-1{color} | release audit |   0m 15s | The applied patch generated 
1 release audit warnings. |
| {color:green}+1{color} | checkstyle |   0m 38s | There were no new checkstyle 
issues. |
| {color:green}+1{color} | whitespace |   0m  1s | The patch has no lines that 
end in whitespace. |
| {color:green}+1{color} | install |   1m 39s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 33s | The patch built with 
eclipse:eclipse. |
| {color:red}-1{color} | findbugs |   3m 27s | The patch appears to introduce 4 
new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | native |   3m 15s | Pre-build of native portion |
| {color:red}-1{color} | hdfs tests | 172m  2s | Tests failed in hadoop-hdfs. |
| | | 214m 39s | |
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|| Reason || Tests ||
| FindBugs | module:hadoop-hdfs |
| Failed unit tests | hadoop.hdfs.server.namenode.TestFSEditLogLoader |
|   | hadoop.hdfs.server.blockmanagement.TestBlockInfo |
|   | hadoop.hdfs.server.blockmanagement.TestBlockTokenWithDFS |
|   | hadoop.hdfs.server.namenode.TestAuditLogs |
|   | hadoop.hdfs.server.namenode.TestFileTruncate |
|   | hadoop.hdfs.server.namenode.TestAddStripedBlocks |
|   | 
hadoop.hdfs.tools.offlineImageViewer.TestOfflineImageViewerWithStripedBlocks |
|   | hadoop.hdfs.server.namenode.TestFSImage |
|   | hadoop.hdfs.TestEncryptedTransfer |
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|| Subsystem || Report/Notes ||
| Patch URL | 
http://issues.apache.org/jira/secure/attachment/12739550/HDFS-8580-HDFS-7285.02.patch
 |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | HDFS-7285 / 49d5cff |
| Release Audit | 
https://builds.apache.org/job/PreCommit-HDFS-Build/11353/artifact/patchprocess/patchReleaseAuditProblems.txt
 |
| Findbugs warnings | 
https://builds.apache.org/job/PreCommit-HDFS-Build/11353/artifact/patchprocess/newPatchFindbugsWarningshadoop-hdfs.html
 |
| hadoop-hdfs test log | 
https://builds.apache.org/job/PreCommit-HDFS-Build/11353/artifact/patchprocess/testrun_hadoop-hdfs.txt
 |
| Test Results | 
https://builds.apache.org/job/PreCommit-HDFS-Build/11353/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/11353/console |


This message was automatically generated.

> Erasure coding: Persist cellSize in BlockInfoStriped and StripedBlocksFeature
> -----------------------------------------------------------------------------
>
>                 Key: HDFS-8580
>                 URL: https://issues.apache.org/jira/browse/HDFS-8580
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Walter Su
>            Assignee: Walter Su
>         Attachments: HDFS-8580-HDFS-7285.01.patch, 
> HDFS-8580-HDFS-7285.02.patch, HDFS-8580.00.patch
>
>
> Zhe Zhang, Kai Zheng and I had a offline discussion. Here is what we thought: 
>  Add a cellSize field in BlockInfoStriped as a workaround, and deal with 
> memory usage in follow-on.(HDFS-8059)
> discussion in HDFS-8494:
> from Walter Su:
> {quote}
> I think BlockInfoStriped needs to keep cellSize.
> {quote}
> from [~vinayrpet]:
> {quote}
> I too was thinking the same when the FSImageLoader problem has came up. This 
> will increase the memory usage by ~4bytes for each block though.
> {quote}
> from [~jingzhao]
> {quote}
> -Also, we should consider adding a chunk size field to StripedBlockProto and 
> removing the cell size field from HdfsFileStatus. In this way we can access 
> the chunk size information in the storage layer.-
> {quote}
> ==
> update:
> from [~jingzhao]
> {quote}
> For fsimage part, since HDFS-8585 just removes StripedBlockProto, I guess 
> what we can do here is to either 1) add the cellSize information into 
> StripedBlocksFeature in fsimage.proto, or 2) bring StripedBlockProto back and 
> put block info and cell size there.
> {quote}



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