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https://issues.apache.org/jira/browse/HADOOP-7937?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13180994#comment-13180994
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Eli Collins commented on HADOOP-7937:
-------------------------------------

bq. Should DFSClient in trunk/23 use these methods, given that the append 
implementation is different to the one in 20? If so then that will need fixing 
in an HDFS JIRA.

I don't think so, which is why I'm thinking we should reduce their visibility 
in branch-1 rather than forward port them to trunk. Make sense?
                
> Forward port SequenceFile#syncFs and friends from Hadoop 1.x
> ------------------------------------------------------------
>
>                 Key: HADOOP-7937
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7937
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: io
>    Affects Versions: 0.22.0, 0.23.1
>            Reporter: Eli Collins
>            Assignee: Tom White
>              Labels: bigtop
>         Attachments: HADOOP-7937.patch
>
>
> HDFS-200 added a new public API SequenceFile#syncFs, we need to forward port 
> this for compatibility. Looks like it might have introduced other APIs that 
> need forward porting as well (eg LocaltedBlocks#setFileLength, and 
> DataNode#getBlockInfo).

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