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Date: Mon, 24 Aug 2015 21:40:47 +0000 (UTC)
From: "Hadoop QA (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <JIRA.12823916.1429913325000.151290.1440452447001@Atlassian.JIRA>
In-Reply-To: <JIRA.12823916.1429913325000@Atlassian.JIRA>
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 <JIRA.12823916.1429913325946@arcas>
Subject: [jira] [Commented] (HDFS-8248) Store INodeId instead of the
 INodeFile object in BlockInfoContiguous
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    [ https://issues.apache.org/jira/browse/HDFS-8248?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14710115#comment-14710115 ] 

Hadoop QA commented on HDFS-8248:
---------------------------------

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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:red}-1{color} | pre-patch |  17m 48s | 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 7 new or modified test files. |
| {color:green}+1{color} | javac |   7m 53s | There were no new javac warning messages. |
| {color:green}+1{color} | javadoc |  10m  2s | 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 |   1m 25s | The applied patch generated  12 new checkstyle issues (total was 513, now 520). |
| {color:green}+1{color} | whitespace |   0m  3s | The patch has no lines that end in whitespace. |
| {color:green}+1{color} | install |   1m 30s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 33s | The patch built with eclipse:eclipse. |
| {color:green}+1{color} | findbugs |   2m 33s | The patch does not introduce any new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | native |   3m 14s | Pre-build of native portion |
| {color:red}-1{color} | hdfs tests |  87m 43s | Tests failed in hadoop-hdfs. |
| | | 133m 13s | |
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|| Reason || Tests ||
| Failed unit tests | hadoop.hdfs.server.datanode.fsdataset.impl.TestWriteToReplica |
|   | hadoop.hdfs.server.namenode.TestNameNodeMetricsLogger |
| Timed out tests | org.apache.hadoop.hdfs.server.datanode.TestDataNodeVolumeFailureReporting |
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12751868/HDFS-8248.004.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / b5ce87f |
| Pre-patch Findbugs warnings | https://builds.apache.org/job/PreCommit-HDFS-Build/12093/artifact/patchprocess/trunkFindbugsWarningshadoop-hdfs.html |
| checkstyle |  https://builds.apache.org/job/PreCommit-HDFS-Build/12093/artifact/patchprocess/diffcheckstylehadoop-hdfs.txt |
| hadoop-hdfs test log | https://builds.apache.org/job/PreCommit-HDFS-Build/12093/artifact/patchprocess/testrun_hadoop-hdfs.txt |
| Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/12093/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf901.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/12093/console |


This message was automatically generated.

> Store INodeId instead of the INodeFile object in BlockInfoContiguous
> --------------------------------------------------------------------
>
>                 Key: HDFS-8248
>                 URL: https://issues.apache.org/jira/browse/HDFS-8248
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Haohui Mai
>            Assignee: Haohui Mai
>              Labels: BB2015-05-TBR
>         Attachments: HDFS-8248.000.patch, HDFS-8248.001.patch, HDFS-8248.002.patch, HDFS-8248.003.patch, HDFS-8248.004.patch
>
>
> Currently the namespace and the block manager are tightly coupled together. There are two couplings in terms of implementation:
> 1. The {{BlockInfoContiguous}} stores a reference of the {{INodeFile}} that owns the block, so that the block manager can look up the corresponding file when replicating blocks, recovering from pipeline failures, etc.
> 1. The {{INodeFile}} stores {{BlockInfoContiguous}} objects that the file owns.
> Decoupling the namespace and the block manager allows the BM to be separated out from the Java heap or even as a standalone process. This jira proposes to remove the first coupling by storing the id of the inode instead of the object reference of {{INodeFile}} in the {{BlockInfoContiguous}} class.


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