Steven Phillips created DRILL-4562:
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Summary: NPE when evaluating expression on nested union type
Key: DRILL-4562
URL: https://issues.apache.org/jira/browse/DRILL-4562
Project: Apache Drill
Issue Type: Bug
Reporter: Steven Phillips
Assignee: Steven Phillips
A simple reproduction:
{code}
select typeof(t.a.b) c from `f.json` t
{code}
where f.json contains:
{code}
{a : { b : 1 }}
{a : { b: "hello" }}
{a : { b: { c : 2} }}
{code}
Fails with following:
{code}
(java.lang.NullPointerException) null
org.apache.drill.exec.vector.complex.FieldIdUtil.getFieldIdIfMatchesUnion():40
org.apache.drill.exec.vector.complex.FieldIdUtil.getFieldIdIfMatches():141
org.apache.drill.exec.vector.complex.FieldIdUtil.getFieldId():207
org.apache.drill.exec.record.SimpleVectorWrapper.getFieldIdIfMatches():101
org.apache.drill.exec.record.VectorContainer.getValueVectorId():269
org.apache.drill.exec.physical.impl.ScanBatch.getValueVectorId():325
org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.getValueVectorId():182
org.apache.drill.exec.expr.ExpressionTreeMaterializer$MaterializeVisitor.visitSchemaPath():628
org.apache.drill.exec.expr.ExpressionTreeMaterializer$MaterializeVisitor.visitSchemaPath():217
org.apache.drill.common.expression.SchemaPath.accept():152
org.apache.drill.exec.expr.ExpressionTreeMaterializer$MaterializeVisitor.visitFunctionCall():274
org.apache.drill.exec.expr.ExpressionTreeMaterializer$MaterializeVisitor.visitFunctionCall():217
org.apache.drill.common.expression.FunctionCall.accept():60
{code}
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