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Type:
Bug
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Status: Closed
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: None
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Fix Version/s: 1.0.0-incubating
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Component/s: None
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Labels:
RelMdColumnUniqueness.areColumnsUnique gets the following stack:
ava.lang.NullPointerException at org.apache.calcite.util.ImmutableBitSet.countBits(ImmutableBitSet.java:280) at org.apache.calcite.util.ImmutableBitSet.access$600(ImmutableBitSet.java:36) at org.apache.calcite.util.ImmutableBitSet$Builder.cardinality(ImmutableBitSet.java:799) at org.apache.calcite.rel.metadata.RelMdColumnUniqueness.areColumnsUnique(RelMdColumnUniqueness.java:178)
The cause is that it populates an ImmutableBitSet.Builder, calls build on it, then calls cardinality. That is not allowed – once build has been called the builder cannot be re-used, even for cardinality.