hadoop-hdfs-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-1407) Use Block in DataTransferProtocol
Date Sat, 18 Sep 2010 00:08:33 GMT
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

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