hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8248) Store INodeId instead of the INodeFile object in BlockInfoContiguous
Date Fri, 24 Apr 2015 22:13:38 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8248?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14511889#comment-14511889
] 

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

\\
\\
| (x) *{color:red}-1 overall{color}* |
\\
\\
|| Vote || Subsystem || Runtime || Comment ||
| {color:red}-1{color} | patch |   0m  0s | The patch command could not apply the patch during
dryrun. |
\\
\\
|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12728063/HDFS-8248.000.patch
|
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 78fe6e5 |
| Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/10379/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
>         Attachments: HDFS-8248.000.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.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message