[
https://issues.apache.org/jira/browse/PIG-1399?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Yan Zhou updated PIG-1399:
--------------------------
Attachment: PIG-1399.patch
Internal Hudson results:
[exec] +1 overall.
[exec]
[exec] +1 @author. The patch does not contain any @author tags.
[exec]
[exec] +1 tests included. The patch appears to include 3 new or
modified tests.
[exec]
[exec] +1 javadoc. The javadoc tool did not generate any warning
messages.
[exec]
[exec] +1 javac. The applied patch does not increase the total number
of javac compiler warnings.
[exec]
[exec] +1 findbugs. The patch does not introduce any new Findbugs
warnings.
[exec]
[exec] +1 release audit. The applied patch does not increase the
total number of release audit warnings.
All core tests also pass.
> Logical Optimizer: Expression optimizor rule
> --------------------------------------------
>
> Key: PIG-1399
> URL: https://issues.apache.org/jira/browse/PIG-1399
> Project: Pig
> Issue Type: Sub-task
> Components: impl
> Affects Versions: 0.7.0
> Reporter: Daniel Dai
> Assignee: Yan Zhou
> Fix For: 0.8.0
>
> Attachments: PIG-1399.patch, PIG-1399.patch, PIG-1399.patch
>
>
> We can optimize expression in several ways:
> 1. Constant pre-calculation
> Example:
> B = filter A by a0 > 5+7;
> => B = filter A by a0 > 12;
> 2. Boolean expression optimization
> Example:
> B = filter A by not (not(a0>5) or a>10);
> => B = filter A by a0>5 and a<=10;
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
