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From "Vinayakumar B (JIRA)" <j...@apache.org>
Subject [jira] [Deleted] (HDFS-9995) CLONE - Erasure coding: use BlockInfo[] for both striped and contiguous blocks in INodeFile
Date Tue, 15 Mar 2016 09:42:36 GMT

     [ https://issues.apache.org/jira/browse/HDFS-9995?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vinayakumar B deleted HDFS-9995:
--------------------------------


> CLONE - Erasure coding: use BlockInfo[] for both striped and contiguous blocks in INodeFile
> -------------------------------------------------------------------------------------------
>
>                 Key: HDFS-9995
>                 URL: https://issues.apache.org/jira/browse/HDFS-9995
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>    Affects Versions: HDFS-7285
>            Reporter: dragon
>            Assignee: Zhe Zhang
>             Fix For: HDFS-7285
>
>
> This JIRA is to use {{BlockInfo[] blocks}} for both striped and contiguous blocks in
INodeFile.
> Currently {{FileWithStripedBlocksFeature}} keeps separate list for striped blocks, and
the methods there duplicate with those in INodeFile, and current code need to judge {{isStriped}}
then do different things. Also if file is striped, the {{blocks}} in INodeFile occupy a reference
memory space.
> These are not necessary, and we can use the same {{blocks}} to make code more clear.
> I keep {{FileWithStripedBlocksFeature}} as empty for follow use: I will file a new JIRA
to move {{dataBlockNum}} and {{parityBlockNum}} from *BlockInfoStriped* to INodeFile, since
ideally they are the same for all striped blocks in a file, and store them in block will waste
NN memory.



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