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Posted to hdfs-dev@hadoop.apache.org by "Kai Sasaki (JIRA)" <ji...@apache.org> on 2016/03/15 10:09:34 UTC

[jira] [Resolved] (HDFS-10023) CLONE - Send the EC schema to DataNode via EC encoding/recovering command

     [ https://issues.apache.org/jira/browse/HDFS-10023?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kai Sasaki resolved HDFS-10023.
-------------------------------
    Resolution: Invalid

> CLONE - Send the EC schema to DataNode via EC encoding/recovering command
> -------------------------------------------------------------------------
>
>                 Key: HDFS-10023
>                 URL: https://issues.apache.org/jira/browse/HDFS-10023
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: dragon
>            Assignee: Uma Maheswara Rao G
>             Fix For: HDFS-7285
>
>
> Discussed with [~umamaheswararao] and [~vinayrpet], we should also send the EC schema to DataNode as well contained in the EC encoding/recovering command. The target DataNode will use it to guide the executing of the task. 
> Another way would be, DataNode would just request schema actively thru a separate RPC call, and as an optimization consideration, DataNode may cache schemas to avoid repeatedly asking for the same schema twice.



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