[HIVE-11415] Add early termination for recursion in vectorization for deep filter queries

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Assignee: Matt McCline
• Reporter: Prasanth Jayachandran
• Created: 30/Jul/15 21:35
• Updated: 04/Aug/15 01:19
• Resolved: 04/Aug/15 00:45

Description

Queries with deep filters (left deep) throws StackOverflowException in vectorization

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)

Sample query:

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)
...
..

repeat the filter for few thousand times for reproduction of the issue.

Issue Links

• is related to: HIVE-11315 Compilation performance issues for large queries
• is superceded by: HIVE-11398 Parse wide OR and wide AND trees to flat OR/AND trees