Prasanth Jayachandran created HIVE-11415:
--------------------------------------------
Summary: Add early termination for recursion in vectorization for
deep filter queries
Key: HIVE-11415
URL: https://issues.apache.org/jira/browse/HIVE-11415
Project: Hive
Issue Type: Bug
Reporter: Prasanth Jayachandran
Queries with deep filters (left deep) throws StackOverflowException in
vectorization
{code}
Exception in thread "main" java.lang.StackOverflowError
at java.lang.Class.getAnnotation(Class.java:3415)
at
org.apache.hive.common.util.AnnotationUtils.getAnnotation(AnnotationUtils.java:29)
at
org.apache.hadoop.hive.ql.exec.vector.VectorExpressionDescriptor.getVectorExpressionClass(VectorExpressionDescriptor.java:332)
at
org.apache.hadoop.hive.ql.exec.vector.VectorizationContext.getVectorExpressionForUdf(VectorizationContext.java:988)
at
org.apache.hadoop.hive.ql.exec.vector.VectorizationContext.getGenericUdfVectorExpression(VectorizationContext.java:1164)
at
org.apache.hadoop.hive.ql.exec.vector.VectorizationContext.getVectorExpression(VectorizationContext.java:439)
at
org.apache.hadoop.hive.ql.exec.vector.VectorizationContext.createVectorExpression(VectorizationContext.java:1014)
at
org.apache.hadoop.hive.ql.exec.vector.VectorizationContext.getVectorExpressionForUdf(VectorizationContext.java:996)
at
org.apache.hadoop.hive.ql.exec.vector.VectorizationContext.getGenericUdfVectorExpression(VectorizationContext.java:1164)
{code}
Sample query:
{code}
explain select count(*) from over1k where (
(t=1 and si=2)
or (t=2 and si=3)
or (t=3 and si=4)
or (t=4 and si=5)
or (t=5 and si=6)
or (t=6 and si=7)
or (t=7 and si=8)
...
..
{code}
repeat the filter for few thousand times for reproduction of the issue.
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