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From "Mingliang Liu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7661) Erasure coding: support hflush and hsync
Date Mon, 22 Feb 2016 19:01:18 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7661?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15157483#comment-15157483
] 

Mingliang Liu commented on HDFS-7661:
-------------------------------------

Hi [~zhz], thanks for proposing to re-use truncate code. I think it's feasible to implement
the DN side overwriting for flush on top of truncate. The code should have many similarities.

> 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-7661-wip.01.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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