hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Rishir Shroff (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-7408) Make compaction to use pread instead of sequential read
Date Thu, 20 Dec 2012 18:45:12 GMT
Rishir Shroff created HBASE-7408:
------------------------------------

             Summary: Make compaction to use pread instead of sequential read
                 Key: HBASE-7408
                 URL: https://issues.apache.org/jira/browse/HBASE-7408
             Project: HBase
          Issue Type: Improvement
            Reporter: Rishir Shroff
            Priority: Minor


As we discovered lately, HFile compactions use sequential reads to fetch blocks. It cause
unwanted streaming of data from HDFS to region servers when there is a cache hit. Lets change
to use preads to reduce iops on disks.


--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message