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https://issues.apache.org/jira/browse/PIG-1820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12987120#action_12987120
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Daniel Dai commented on PIG-1820:
---------------------------------
Review request:
https://reviews.apache.org/r/356/
> New logical plan: FilterLogicExpressionSimplifier fail to deal with UDF
> -----------------------------------------------------------------------
>
> Key: PIG-1820
> URL: https://issues.apache.org/jira/browse/PIG-1820
> Project: Pig
> Issue Type: Bug
> Components: impl
> Affects Versions: 0.8.0
> Reporter: Daniel Dai
> Assignee: Daniel Dai
> Fix For: 0.8.0
>
> Attachments: PIG-1820-1.patch
>
>
> The following script fail:
> {code}
> a = load '1.txt' as (a0, a1);
> b = filter a by (a0 is not null or a1 is not null) and IsEmpty(a0);
> explain b;
> {code}
> Error message:
> Caused by: java.lang.ClassCastException:
> org.apache.pig.newplan.logical.expression.UserFuncExpression cannot be cast
> to org.apache.pig.newplan.logical.expression.BinaryExpression
> at
> org.apache.pig.newplan.logical.rules.LogicalExpressionSimplifier$LogicalExpressionSimplifierTransformer.handleBinary(LogicalExpressionSimplifier.java:561)
> at
> org.apache.pig.newplan.logical.rules.LogicalExpressionSimplifier$LogicalExpressionSimplifierTransformer.handleAnd(LogicalExpressionSimplifier.java:429)
> at
> org.apache.pig.newplan.logical.rules.LogicalExpressionSimplifier$LogicalExpressionSimplifierTransformer.inferRelationship(LogicalExpressionSimplifier.java:397)
> at
> org.apache.pig.newplan.logical.rules.LogicalExpressionSimplifier$LogicalExpressionSimplifierTransformer.handleDNFOr(LogicalExpressionSimplifier.java:281)
> at
> org.apache.pig.newplan.logical.rules.LogicalExpressionSimplifier$LogicalExpressionSimplifierTransformer.checkDNFLeaves(LogicalExpressionSimplifier.java:192)
> at
> org.apache.pig.newplan.logical.rules.LogicalExpressionSimplifier$LogicalExpressionSimplifierTransformer.transform(LogicalExpressionSimplifier.java:108)
> at
> org.apache.pig.newplan.optimizer.PlanOptimizer.optimize(PlanOptimizer.java:110)
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