[GEODE-1881] CompactMapRangeIndex doesn't handle null map keys

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.0.0-incubating
• Component/s: querying
• Assignee: Dan Smith
• Reporter: Dan Smith
• Created: 09/Sep/16 22:36
• Updated: 25/Oct/16 07:17
• Resolved: 12/Sep/16 21:44

Description

When indexing map fields that have null keys, geode throws an NPE.

Steps to reproduce:
1. Create an index on a map field eg

create index --name="idx_positions" --expression="positions[*]" --region="region"

2. Add entries with null keys in the the indexed map

entry.positions  = new HashMap()
entry.positions.put(null, "somevalue);
region.put(entry);

You will get an NPE

Caused by: java.lang.NullPointerException
	at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:936)
	at com.gemstone.gemfire.cache.query.internal.index.CompactMapRangeIndex.saveIndexAddition(CompactMapRangeIndex.java:184)
	at com.gemstone.gemfire.cache.query.internal.index.CompactMapRangeIndex.saveMapping(CompactMapRangeIndex.java:111)
	at com.gemstone.gemfire.cache.query.internal.index.AbstractIndex$IMQEvaluator.applyProjection(AbstractIndex.java:1354)
	at com.gemstone.gemfire.cache.query.internal.index.AbstractIndex$IMQEvaluator.doNestedIterations(AbstractIndex.java:1304)
	at com.gemstone.gemfire.cache.query.internal.index.AbstractIndex$IMQEvaluator.doNestedIterations(AbstractIndex.java:1315)
	at com.gemstone.gemfire.cache.query.internal.index.AbstractIndex$IMQEvaluator.evaluate(AbstractIndex.java:1132)
	... 44 more