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From "Xiaoyu Yao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7192) DN should ignore lazyPersist hint if the writer is not local
Date Wed, 29 Jul 2015 18:13:05 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14646534#comment-14646534

Xiaoyu Yao commented on HDFS-7192:

Thanks [~arpitagarwal] for working on this. Patch LGTM. 
Can you rebase and rerun Jenkins as some of the changes in DFSConfigKeys.java from v3 can't
apply any more?

> DN should ignore lazyPersist hint if the writer is not local
> ------------------------------------------------------------
>                 Key: HDFS-7192
>                 URL: https://issues.apache.org/jira/browse/HDFS-7192
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode
>            Reporter: Arpit Agarwal
>            Assignee: Arpit Agarwal
>         Attachments: HDFS-7192.01.patch, HDFS-7192.02.patch, HDFS-7192.03.patch
> The DN should ignore {{allowLazyPersist}} hint to {{DataTransferProtocol#writeBlock}}
if the writer is not local.
> Currently we don't restrict memory writes to local clients. For in-cluster clients this
is not an issue as single replica writes default to the local DataNode. But clients outside
the cluster can still send this hint.

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