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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8823) Move replication factor into individual blocks
Date Tue, 28 Jul 2015 07:55:05 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8823?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14644027#comment-14644027
] 

Hadoop QA commented on HDFS-8823:
---------------------------------

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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  17m  2s | Pre-patch trunk 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 6 new
or modified test files. |
| {color:green}+1{color} | javac |   7m 35s | There were no new javac warning messages. |
| {color:green}+1{color} | javadoc |   9m 41s | There were no new javadoc warning messages.
|
| {color:green}+1{color} | release audit |   0m 22s | The applied patch does not increase
the total number of release audit warnings. |
| {color:red}-1{color} | checkstyle |   1m 22s | The applied patch generated  5 new checkstyle
issues (total was 556, now 553). |
| {color:green}+1{color} | whitespace |   0m  4s | The patch has no lines that end in whitespace.
|
| {color:green}+1{color} | install |   1m 22s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 33s | The patch built with eclipse:eclipse.
|
| {color:red}-1{color} | findbugs |   2m 32s | The patch appears to introduce 1 new Findbugs
(version 3.0.0) warnings. |
| {color:green}+1{color} | native |   3m  3s | Pre-build of native portion |
| {color:red}-1{color} | hdfs tests | 159m 42s | Tests failed in hadoop-hdfs. |
| | | 203m 23s | |
\\
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|| Reason || Tests ||
| FindBugs | module:hadoop-hdfs |
| Failed unit tests | hadoop.hdfs.TestLeaseRecovery2 |
|   | hadoop.hdfs.TestQuota |
|   | hadoop.hdfs.server.namenode.snapshot.TestRenameWithSnapshots |
|   | hadoop.hdfs.TestRollingUpgrade |
|   | hadoop.hdfs.server.namenode.TestHDFSConcat |
|   | hadoop.hdfs.server.namenode.ha.TestStandbyIsHot |
|   | hadoop.hdfs.server.namenode.TestFSImageWithSnapshot |
\\
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12747492/HDFS-8823.000.patch
|
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / e21dde5 |
| checkstyle |  https://builds.apache.org/job/PreCommit-HDFS-Build/11853/artifact/patchprocess/diffcheckstylehadoop-hdfs.txt
|
| Findbugs warnings | https://builds.apache.org/job/PreCommit-HDFS-Build/11853/artifact/patchprocess/newPatchFindbugsWarningshadoop-hdfs.html
|
| hadoop-hdfs test log | https://builds.apache.org/job/PreCommit-HDFS-Build/11853/artifact/patchprocess/testrun_hadoop-hdfs.txt
|
| Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/11853/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf909.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/11853/console |


This message was automatically generated.

> Move replication factor into individual blocks
> ----------------------------------------------
>
>                 Key: HDFS-8823
>                 URL: https://issues.apache.org/jira/browse/HDFS-8823
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Haohui Mai
>            Assignee: Haohui Mai
>         Attachments: HDFS-8823.000.patch
>
>
> This jira proposes to record the replication factor in the {{BlockInfo}} class. The changes
have two advantages:
> * Decoupling the namespace and the block management layer. It is a prerequisite step
to move block management off the heap or to a separate process.
> * Increased flexibility on replicating blocks. Currently the replication factors of all
blocks have to be the same. The replication factors of these blocks are equal to the highest
replication factor across all snapshots. The changes will allow blocks in a file to have different
replication factor, potentially saving some space.



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