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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Edited] (HBASE-4374) Up default regions size from 256M to 1G
Date Tue, 13 Sep 2011 06:26:09 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4374?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13103397#comment-13103397
] 

Andrew Purtell edited comment on HBASE-4374 at 9/13/11 6:25 AM:
----------------------------------------------------------------

If we can get online schema edits into 0.92, at least metadata like HTD/HCD attributes, then
users can easily change the region size split threshold as tables grow. Can add a ruby script
helper for this purpose in bin or shell support. Does not take away from talking up presplitting
but provides a good alternative if presplitting is not an option for whatever reason (e.g.
keyspace distribution not well known). 

      was (Author: apurtell):
    If we can get online schema edits into 0.92, at least metadata like HTD/HCD attributes,
then users can easily change the split points as tables grow. Can add a ruby script helper
for this purpose in bin or shell support. Does not take away from talking up presplitting
but provides a good alternative if presplitting is not an option for whatever reason (e.g.
keyspace distribution not well known). 
  
> Up default regions size from 256M to 1G
> ---------------------------------------
>
>                 Key: HBASE-4374
>                 URL: https://issues.apache.org/jira/browse/HBASE-4374
>             Project: HBase
>          Issue Type: Task
>            Reporter: stack
>            Priority: Blocker
>             Fix For: 0.92.0
>
>
> HBASE-4365 has some discussion of why we default for a table should tend to fewer bigger
regions.  It doesn't look like this issue will be done for 0.92.  For 0.92, lets up default
region size from 256M to 1G and talk up pre-split on table creation in manual.

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