[LUCENE-6001] DrillSideways throws NullPointerException for some searches

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 4.10.1
• Fix Version/s: 4.10.4, 5.1, 6.0
• Component/s: modules/facet
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Dragan Jotanovic
• Created: 09/Oct/14 16:07
• Updated: 09/May/16 18:30
• Resolved: 27/Feb/15 14:03

Description

For some DrillSideways searches I get NullPointerException.
I have tracked the problem to DrillSidewaysScorer class, on line 126 in DrillSidewaysScorer.java:

long baseQueryCost = baseScorer.cost();

On some of my index segments, this call throws NullPoinerException.
"baseScorer" is instance of ReqExclScorer.
In ReqExclScorer.java:
public long cost()

{ return reqScorer.cost(); }

throws NullPointerException because reqScorer is null.