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https://issues.apache.org/jira/browse/HIVE-11366?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14643161#comment-14643161
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Mostafa Mokhtar commented on HIVE-11366:
----------------------------------------
[~gopalv]
Still problematic.
{code}
Stack Trace Sample Count Percentage(%)
java.util.AbstractList.hashCode() 4,646 24.014
org.apache.commons.lang.builder.HashCodeBuilder.append(Object) 4,646
24.014
org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.hashCode() 4,646
24.014
java.util.AbstractList.hashCode() 4,646 24.014
org.apache.commons.lang.builder.HashCodeBuilder.append(Object)
4,646 24.014
org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.hashCode() 4,646
24.014
java.util.AbstractList.hashCode() 4,646 24.014
org.apache.commons.lang.builder.HashCodeBuilder.append(Object) 4,646
24.014
org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.hashCode() 4,646
24.014
java.util.AbstractList.hashCode() 4,646 24.014
org.apache.commons.lang.builder.HashCodeBuilder.append(Object) 4,646 24.014
org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.hashCode() 4,646
24.014
java.util.AbstractList.hashCode() 4,646
24.014
org.apache.commons.lang.builder.HashCodeBuilder.append(Object) 4,646 24.014
org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.hashCode() 4,646
24.014
java.util.AbstractList.hashCode()
4,646 24.014
org.apache.commons.lang.builder.HashCodeBuilder.append(Object) 4,646 24.014
org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.hashCode() 4,646
24.014
java.util.AbstractList.hashCode() 4,646 24.014
org.apache.commons.lang.builder.HashCodeBuilder.append(Object) 4,646 24.014
org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.hashCode() 4,646
24.014
java.util.AbstractList.hashCode() 4,646 24.014
org.apache.commons.lang.builder.HashCodeBuilder.append(Object) 4,646
24.014
org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.hashCode() 4,646
24.014
java.util.AbstractList.hashCode() 4,646 24.014
org.apache.commons.lang.builder.HashCodeBuilder.append(Object) 4,646
24.014
org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.hashCode() 4,646 24.014
java.util.AbstractList.hashCode() 4,645 24.009
org.apache.commons.lang.builder.HashCodeBuilder.append(Object) 4,645
24.009
org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.hashCode()
4,645 24.009
java.util.AbstractList.hashCode() 4,645 24.009
org.apache.commons.lang.builder.HashCodeBuilder.append(Object)
4,645 24.009
org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.hashCode() 4,645
24.009
java.util.AbstractList.hashCode() 4,645 24.009
org.apache.commons.lang.builder.HashCodeBuilder.append(Object) 4,645 24.009
org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.hashCode() 4,645
24.009
java.util.AbstractList.hashCode() 4,644 24.004
org.apache.commons.lang.builder.HashCodeBuilder.append(Object) 4,644 24.004
org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.hashCode() 4,644
24.004
java.util.AbstractList.hashCode() 4,642
23.993
org.apache.commons.lang.builder.HashCodeBuilder.append(Object) 4,642 23.993
org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.hashCode() 4,642
23.993
java.util.AbstractList.hashCode()
4,641 23.988
org.apache.commons.lang.builder.HashCodeBuilder.append(Object) 4,641 23.988
org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.hashCode() 4,641
23.988
java.util.AbstractList.hashCode() 4,641 23.988
org.apache.commons.lang.builder.HashCodeBuilder.append(Object) 4,641
23.988
org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.hashCode() 4,641
23.988
java.util.AbstractList.hashCode() 4,641 23.988
org.apache.commons.lang.builder.HashCodeBuilder.append(Object) 4,641
23.988
org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.hashCode() 4,641 23.988
java.util.AbstractList.hashCode() 4,641 23.988
org.apache.commons.lang.builder.HashCodeBuilder.append(Object) 4,641
23.988
org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.hashCode() 4,641
23.988
java.util.AbstractList.hashCode() 4,641 23.988
org.apache.commons.lang.builder.HashCodeBuilder.append(Object) 4,641
23.988
org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.hashCode()
4,641 23.988
java.util.AbstractList.hashCode() 4,641 23.988
org.apache.commons.lang.builder.HashCodeBuilder.append(Object)
4,641 23.988
org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.hashCode() 4,641
23.988
java.util.AbstractList.hashCode() 4,641 23.988
org.apache.commons.lang.builder.HashCodeBuilder.append(Object) 4,641 23.988
org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.hashCode() 4,641
23.988
java.util.AbstractList.hashCode() 4,641 23.988
org.apache.hadoop.hive.ql.plan.ExprNodeDesc$ExprNodeDescEqualityWrapper.<init>(ExprNodeDesc)
1 0.005
org.apache.hadoop.hive.ql.exec.ExprNodeEvaluatorFactory$EvaluatorContext.getEvaluated(ExprNodeEvaluator)
1 0.005
org.apache.hadoop.hive.ql.exec.ExprNodeEvaluatorFactory.iterate(ExprNodeEvaluator,
ExprNodeEvaluatorFactory$EvaluatorContext) 1 0.005
org.apache.hadoop.hive.ql.exec.ExprNodeEvaluatorFactory.iterate(ExprNodeEvaluator,
ExprNodeEvaluatorFactory$EvaluatorContext) 1 0.005
org.apache.hadoop.hive.ql.exec.ExprNodeEvaluatorFactory.iterate(ExprNodeEvaluator,
ExprNodeEvaluatorFactory$EvaluatorContext) 1 0.005
{code}
> Avoid right leaning tree hashCode depth during ExprNodeDescEqualityWrapper
> HashMaps
> -----------------------------------------------------------------------------------
>
> Key: HIVE-11366
> URL: https://issues.apache.org/jira/browse/HIVE-11366
> Project: Hive
> Issue Type: Improvement
> Components: Logical Optimizer
> Affects Versions: 1.0.0, 1.2.0, 1.1.0, 1.1.1
> Reporter: Gopal V
> Assignee: Gopal V
> Attachments: HIVE-11366.1.patch
>
>
> For a large sequence of AND clauses, the precedence order results in a deep
> unbalanced tree.
> (AND A (AND B (AND C (AND D (AND E)....)
> which could result in a hashcode for the top-level expression traversing deep.
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