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From "Takuya Fukudome (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-8195) Erasure coding: Fix file quota change when we complete/commit the striped blocks
Date Fri, 01 May 2015 09:26:06 GMT

     [ https://issues.apache.org/jira/browse/HDFS-8195?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Takuya Fukudome updated HDFS-8195:
----------------------------------
    Attachment: HDFS-8195.1.patch

I attached initial patch. Could you review for me? Thank you.

> Erasure coding: Fix file quota change when we complete/commit the striped blocks
> --------------------------------------------------------------------------------
>
>                 Key: HDFS-8195
>                 URL: https://issues.apache.org/jira/browse/HDFS-8195
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Takuya Fukudome
>            Assignee: Takuya Fukudome
>         Attachments: HDFS-8195.1.patch
>
>
> Fix file quota change when converting a file with striped blocks from complete/under-construction
to under-construction/complete state. When we add a new block (FSDirectory#addBlock) we update
the quota using the full block size (since we do not know how much data the user will write
to
> the new block), and when we complete/commit the block, the quota is updated based on
the block's real size (FSNamesystem#commitOrCompleteLastBlock). Currently these two places
only support contiguous blocks (using INodeFile#getPreferredBlockSize as the full block size).
We should update them for striped blocks.



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