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https://issues.apache.org/jira/browse/HDFS-7661?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15151628#comment-15151628
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GAO Rui commented on HDFS-7661:
-------------------------------
[~liuml07], thank you very much to join this task. I will learn your design
document and share my opinions. And, I am also working on a wip patch which
contains unit test and add a overwrite protocol, also some changes about
fsdataset operations in datanode to support file overwrite. I will sharp the
patch and attache it soon. To avoid redundant work, could you share more about
the detail parts of code you are dealing with?
> Erasure coding: support hflush and hsync
> ----------------------------------------
>
> Key: HDFS-7661
> URL: https://issues.apache.org/jira/browse/HDFS-7661
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Tsz Wo Nicholas Sze
> Assignee: GAO Rui
> Attachments: EC-file-flush-and-sync-steps-plan-2015-12-01.png,
> HDFS-7661-unitTest-wip-trunk.patch,
> HDFS-EC-file-flush-sync-design-version1.1.pdf,
> HDFS-EC-file-flush-sync-design-version2.0.pdf
>
>
> We also need to support hflush/hsync and visible length.
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