You are viewing a plain text version of this content. The canonical link for it is here.

Posted to hdfs-dev@hadoop.apache.org by "dragon (JIRA)" <ji...@apache.org> on 2016/03/15 09:17:35 UTC

[jira] [Created] (HDFS-10140) CLONE - Erasure Coding: reuse BlockReader when reading the same block in pread

dragon created HDFS-10140:
-----------------------------

             Summary: CLONE - Erasure Coding: reuse BlockReader when reading the same block in pread
                 Key: HDFS-10140
                 URL: https://issues.apache.org/jira/browse/HDFS-10140
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: dragon
            Assignee: Jing Zhao
             Fix For: HDFS-7285


Currently in pread, we create a new block reader for each aligned stripe even though these stripes belong to the same block. It's better to reuse them to avoid unnecessary block reader creation overhead. This can also avoid reading from the same bad DataNode.



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