db-derby-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Mike Matrigali (JIRA)" <derby-...@db.apache.org>
Subject [jira] Closed: (DERBY-741) row estimates from btree code can sometimes return more row than exist in table
Date Tue, 11 Jul 2006 20:24:44 GMT
     [ http://issues.apache.org/jira/browse/DERBY-741?page=all ]
     
Mike Matrigali closed DERBY-741:
--------------------------------


> row estimates from btree code can sometimes return more row than exist in table
> -------------------------------------------------------------------------------
>
>          Key: DERBY-741
>          URL: http://issues.apache.org/jira/browse/DERBY-741
>      Project: Derby
>         Type: Bug

>   Components: Store
>     Versions: 10.0.2.0, 10.0.2.1, 10.1.1.0, 10.1.1.1, 10.1.1.2, 10.1.2.0, 10.1.2.1
>     Reporter: Mike Matrigali
>     Assignee: Mike Matrigali
>     Priority: Minor
>      Fix For: 10.2.0.0, 10.1.3.0

>
> In BTreeCostController the recursive row estimate can sometimes return more rows than
exists in the table.  In Sane server an ASSERT would be thrown.  Simple change is to just
always make the max estimation be all the rows in the table.

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators:
   http://issues.apache.org/jira/secure/Administrators.jspa
-
For more information on JIRA, see:
   http://www.atlassian.com/software/jira


Mime
View raw message