| Interface | Description | 
|---|---|
| Partition<T,K> | 
 A collection of data elements. 
 | 
| Class | Description | 
|---|---|
| BlockManagerWorker | 
 Executor-side block manager. 
 | 
| CoderManager | 
 Mapping from RuntimeEdgeId to Coder. 
 | 
| DataUtil | 
 Utility methods for data handling (e.g., (de)serialization). 
 | 
| DataUtil.InputStreamIterator<T> | 
 An iterator that emits objects from  
InputStream using the corresponding Coder. | 
| FileArea | 
 A file area descriptor. 
 | 
| NonSerializedPartition<K> | 
 A collection of data elements. 
 | 
| SerializedPartition<K> | 
 A collection of data elements. 
 | 
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