[CALCITE-4629] RexNormalize.hashCode() throws NullPointerException

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Assignee: Unassigned
• Reporter: Julian Hyde
• Created: 01/Jun/21 22:24
• Updated: 01/Jun/21 22:58

Description

RexNormalize.hashCode() throws NullPointerException. The stack is as follows:

[java.util.Objects.requireNonNull(java/util/Objects.java:203)]:
Java::JavaLang::NullPointerException: 
    java.util.Objects.requireNonNull(java/util/Objects.java:203)
    org.apache.calcite.rex.RexNormalize.hashCode(org/apache/calcite/rex/RexNormalize.java:127)
    org.apache.calcite.rex.RexCall.hashCode(org/apache/calcite/rex/RexCall.java:297)
    java.util.HashMap.hash(java/util/HashMap.java:339)
    java.util.HashMap.put(java/util/HashMap.java:612)
    java.util.HashSet.add(java/util/HashSet.java:220)
    org.apache.calcite.rex.RexUtil.addOr(org/apache/calcite/rex/RexUtil.java:1370)
    org.apache.calcite.rex.RexUtil.flattenOr(org/apache/calcite/rex/RexUtil.java:1356)
    org.apache.calcite.rex.RexUtil.composeDisjunction(org/apache/calcite/rex/RexUtil.java:1330)
    org.apache.calcite.rex.RexUtil.composeDisjunction(org/apache/calcite/rex/RexUtil.java:1320)
    org.apache.calcite.tools.RelBuilder.or(org/apache/calcite/tools/RelBuilder.java:721)

It seems likely that this was caused by commit 6a9832c. I don't have a repro case, and I can't figure out what might have caused this.

The problem occurs in 1.27.0 RC 0.

Issue Links

• is related to: CALCITE-4073 Add a new component RexNormalize for more effect rex nodes normalization