hbase-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Izaak Rubin (JIRA)" <j...@apache.org>
Subject [jira] Issue Comment Edited: (HBASE-745) scaling of one regionserver, improving memory and cpu usage
Date Mon, 21 Jul 2008 20:59:33 GMT

    [ https://issues.apache.org/jira/browse/HBASE-745?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12615420#action_12615420
] 

irubin edited comment on HBASE-745 at 7/21/08 1:59 PM:
------------------------------------------------------------

Hi Billy,

I can't seem to replicate this problem - I removed my local copies of HStore and TestCompaction,
updated, and then applied hbase-745-for-0.2.patch (successfully).  The patch for HBase-720
was committed before you made your comment on Thursday (although the issue was only closed
today) - is it possible that when you tried to apply the hbase-720 patch, you actually removed
it by accident?  Maybe try what I did (remove the files, update, and re-apply 745) and see
if it still doesn't work - let me know.

      was (Author: irubin):
    Hi Billy,

I can't seem to replicate this problem - I removed my local copies of HStore and TestCompaction,
updated, and then applied hbase-745-for-0.2.patch (successfully).  The patch for HBase-720
was applied before you made your comment on Thursday (although the issue was only closed today)
- is it possible that when you tried to apply the hbase-720 patch, you actually removed it
by accident?  Maybe try what I did (remove the files, update, and re-apply 745) and see if
it still doesn't work - let me know.
  
> scaling of one regionserver, improving memory and cpu usage
> -----------------------------------------------------------
>
>                 Key: HBASE-745
>                 URL: https://issues.apache.org/jira/browse/HBASE-745
>             Project: Hadoop HBase
>          Issue Type: Improvement
>          Components: regionserver
>    Affects Versions: 0.1.3, 0.2.0
>         Environment: hadoop 0.17.1
>            Reporter: LN
>            Priority: Minor
>         Attachments: hbase-745-for-0.2.patch, HBASE-745.compact.patch
>
>
> after weeks testing hbase 0.1.3 and hadoop(0.16.4, 0.17.1), i found there are many works
to do,  before a particular regionserver can handle data about 100G, or even more. i'd share
my opions here with stack, and other developers.
> first, the easiest way improving scalability of regionserver is upgrading hardware, use
64bit os and 8G memory for the regionserver process, and speed up disk io. 
> besides hardware, following are software bottlenecks i found in regionserver:
> 1. as data increasing, compaction was eating cpu(with io) times, the total compaction
time is basicly linear relative to whole data size, even worse, sometimes square relavtive
to that size.
> 2. memory usage are depends on opened mapfiles
> 3. network connection are depends on opened mapfiles, see HADOOP-2341 and HBASE-24. 

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message