Palash Chauhan created PHOENIX-7772:
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Summary: TOTAL_SEGMENTS query leads to NPE when table has index
Key: PHOENIX-7772
URL: https://issues.apache.org/jira/browse/PHOENIX-7772
Project: Phoenix
Issue Type: Bug
Affects Versions: 5.3.0
Reporter: Palash Chauhan
Assignee: Palash Chauhan
Fix For: 5.4.0, 5.3.1
SegmentInfoPlan passes null as delegate in its constructor.
{code:java}
public SegmentInfoPlan(StatementContext context, FilterableStatement statement,
TableRef tableRef,
RowProjector projector, Integer totalSegmentsValue) {
super(context, statement, tableRef, projector, null, null, null,
OrderBy.EMPTY_ORDER_BY, null);
this.totalSegmentsValue = totalSegmentsValue;
this.sourceTables = ImmutableSet.of(tableRef);
} {code}
During TOTAL_SEGMENTS query, in QueryOptimizer when there is an index on the
table, `dataPlan.isDegenerate()` is called
{code:java}
if (
dataPlan.isApplicable() && (indexes.isEmpty() || dataPlan.isDegenerate()
|| dataPlan.getTableRef().hasDynamicCols() ||
select.getHint().hasHint(Hint.NO_INDEX))
) {
return Collections.<QueryPlan> singletonList(dataPlan);
} {code}
SegmentInfoPlan -> ClientProcessingPlan -> DelegateQueryPlan
{code:java}
@Override
public boolean isDegenerate() {
return delegate.isDegenerate();
} {code}
delegate is null which leads to NPE
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