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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-537) DataNode uses ReplicaBeingWritten to support dfs writes/hflush
Date Tue, 01 Sep 2009 22:13:32 GMT

    [ https://issues.apache.org/jira/browse/HDFS-537?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12750139#action_12750139

Hairong Kuang commented on HDFS-537:

For comment 2, I created HDFS-583 to record this comment. So the comment is going to be removed
from the code.

For comment 1, I thought about it too. But sometimes we need setters that sets the value unconditionally.
That's why this patch ended up checking the value in BlockReceiver.

> DataNode uses ReplicaBeingWritten to support dfs writes/hflush
> --------------------------------------------------------------
>                 Key: HDFS-537
>                 URL: https://issues.apache.org/jira/browse/HDFS-537
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: data-node
>    Affects Versions: Append Branch
>            Reporter: Hairong Kuang
>            Assignee: Hairong Kuang
>             Fix For: Append Branch
>         Attachments: exposeReplicaInfo.patch
> This jira adds subdirectory "rbw" to data directory to support replicas created on dfs
writes/hflush, uses ReplicaBeingWritten to represent replicas created on dfs writes/hflush,
and some changes to make code more readable.

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