hadoop-common-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-7370) Optimize pread on ChecksumFileSystem
Date Thu, 09 Jun 2011 07:53:58 GMT
Optimize pread on ChecksumFileSystem
------------------------------------

                 Key: HADOOP-7370
                 URL: https://issues.apache.org/jira/browse/HADOOP-7370
             Project: Hadoop Common
          Issue Type: Improvement
          Components: fs
            Reporter: Todd Lipcon
            Assignee: Todd Lipcon
            Priority: Minor
         Attachments: checksumfs-pread-0.20.txt

Currently the implementation of positional read in ChecksumFileSystem is verify inefficient
- it actually re-opens the underlying file and checksum file, then seeks and uses normal read.
Instead, it can push down positional read directly to the underlying FS and verify checksum.

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message