| Package | Description | 
|---|---|
| org.apache.crunch.lambda | Alternative Crunch API using Java 8 features to allow construction of pipelines using lambda functions and method
 references. | 
| org.apache.crunch.lib.join | Inner and outer joins on collections. | 
| Class and Description | 
|---|
| JoinStrategy Defines a strategy for joining two PTables together on a common key. | 
| JoinType Specifies the specific behavior of how a join should be performed in terms of requiring matching keys 
 on both sides of the join. | 
| Class and Description | 
|---|
| JoinFn Represents a  DoFnfor performing joins. | 
| JoinStrategy Defines a strategy for joining two PTables together on a common key. | 
| JoinType Specifies the specific behavior of how a join should be performed in terms of requiring matching keys 
 on both sides of the join. | 
| MapsideJoinStrategy Utility for doing map side joins on a common key between two  PTables. | 
| ShardedJoinStrategy.ShardingStrategy Determines over how many shards a key will be split in a sharded join. | 
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