hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Kai Zheng (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-8137) Sends the EC schema to DataNode as well in EC encoding/recovering command
Date Mon, 13 Apr 2015 23:09:12 GMT
Kai Zheng created HDFS-8137:
-------------------------------

             Summary: Sends the EC schema to DataNode as well in EC encoding/recovering command
                 Key: HDFS-8137
                 URL: https://issues.apache.org/jira/browse/HDFS-8137
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: Kai Zheng
            Assignee: Uma Maheswara Rao G


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.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message