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https://issues.apache.org/jira/browse/HDFS-7661?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15158246#comment-15158246
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Mingliang Liu commented on HDFS-7661:
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Hi [~sinall], {{upgrade/rollback}} seems too heavy for this feature. Let's
schedule a meeting tomorrow for discussing this. And after we reach consensus
about the general design, we can update the conclusion here. I'll write to you
offline.
> 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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