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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-2214) Do HBASE-1996 -- setting size to return in scan rather than count of rows -- properly
Date Thu, 26 Jul 2012 18:54:34 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13423351#comment-13423351
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Jean-Daniel Cryans commented on HBASE-2214:
-------------------------------------------

Following this discussion on user@

http://permalink.gmane.org/gmane.comp.java.hadoop.hbase.user/27936

If the max scanner result size is only set on the region server it's possible miss rows. Even
with the latest patch in this jira it's still possible since the client doesn't tell the server
it's going to use the default instead of whatever the server is using.

Maybe the {{ClientScanner}} could modify the {{Scan}} that it passes the max scanner result
it uses to the region server
                
> Do HBASE-1996 -- setting size to return in scan rather than count of rows -- properly
> -------------------------------------------------------------------------------------
>
>                 Key: HBASE-2214
>                 URL: https://issues.apache.org/jira/browse/HBASE-2214
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: stack
>             Fix For: 0.96.0, 0.94.2
>
>         Attachments: HBASE-2214-0.94-v2.txt, HBASE-2214-0.94-v3.txt, HBASE-2214-0.94.txt,
HBASE-2214-v4.txt, HBASE-2214-v5.txt, HBASE-2214-v6.txt, HBASE-2214-v7.txt, HBASE-2214_with_broken_TestShell.txt
>
>
> The notion that you set size rather than row count specifying how many rows a scanner
should return in each cycle was raised over in hbase-1966.  Its a good one making hbase "regular"
though the data under it may vary.  HBase-1966 was committed but the patch was constrained
by the fact that it needed to not change RPC interface.  This issue is about doing hbase-1966
for 0.21 in a clean, unconstrained way.

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