hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HDFS-1407) Use Block in DataTransferProtocol
Date Mon, 20 Sep 2010 17:38:34 GMT

     [ https://issues.apache.org/jira/browse/HDFS-1407?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Suresh Srinivas updated HDFS-1407:
----------------------------------

    Status: Open  (was: Patch Available)

> Use Block in DataTransferProtocol
> ---------------------------------
>
>                 Key: HDFS-1407
>                 URL: https://issues.apache.org/jira/browse/HDFS-1407
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Suresh Srinivas
>            Assignee: Suresh Srinivas
>             Fix For: 0.22.0
>
>         Attachments: HDFS-1400.trunk.patch, HDFS-1400.trunk.patch
>
>
> Currently DataTransferProtocol has methods such as:
> {noformat}
>     public static void opReadBlock(DataOutputStream out, long blockId,
>         long blockGs, long blockOffset, long blockLen, String clientName,
>         Token<BlockTokenIdentifier> blockToken) throws IOException;
> {noformat}
> The client has to pass the individual elements that make block identification such as
blockId and generation stamp. I propose methods with the following format:
> {noformat}
>     public static void opReadBlock(DataOutputStream out, Block block,
>         long blockOffset, long blockLen, String clientName,
>         Token<BlockTokenIdentifier> blockToken) throws IOException;
> {noformat}
> With this, the client need not understand the internals of Block. It receives Block over
RPC and sends it in DataTransferProtocol. This helps in making Block opaque to the client.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message