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From "Li Bo (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-8529) Add block count metrics to datanode for EC recovery and encoding
Date Thu, 04 Jun 2015 03:57:38 GMT

     [ https://issues.apache.org/jira/browse/HDFS-8529?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Li Bo updated HDFS-8529:
------------------------
    Summary: Add block count metrics to datanode for EC recovery and encoding  (was: Erasure
Coding: optimize client writing by making the writing of data and parity  concurrently)

> Add block count metrics to datanode for EC recovery and encoding
> ----------------------------------------------------------------
>
>                 Key: HDFS-8529
>                 URL: https://issues.apache.org/jira/browse/HDFS-8529
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Li Bo
>            Assignee: Li Bo
>
> HDFS-8425 shows the client writing is not very efficient currently. One factor is that
 when data buffers are full, client suspends until the parities are encoded and written. This
sub task tries to make the two writings concurrently to enhance the efficiency.



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