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From "GAO Rui (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7661) Erasure coding: support hflush and hsync
Date Wed, 06 Jan 2016 07:34:39 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7661?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15085134#comment-15085134
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GAO Rui commented on HDFS-7661:
-------------------------------

[~zhz], these make sense to me. Let's store data length in {{.meta}} file. For replication
block .meta file, data length means the length of the related block. While, for EC internal
block .meta file, data length means the related block group data length. 

> 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
>
>
> We also need to support hflush/hsync and visible length. 



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