| Package | Description | 
|---|---|
| io.druid.query.groupby.epinephelinae | 
| Class and Description | 
|---|
| AbstractBufferHashGrouper | 
| AggregateResult | 
| ByteBufferHashTable | 
| ByteBufferHashTable.BucketUpdateHandler | 
| CloseableGrouperIterator | 
| Grouper
 Groupers aggregate metrics from rows that they typically get from a ColumnSelectorFactory, under
 grouping keys that some outside driver is passing in. 
 | 
| Grouper.BufferComparator | 
| Grouper.Entry | 
| Grouper.KeySerde
 Possibly-stateful object responsible for serde and comparison of keys. 
 | 
| Grouper.KeySerdeFactory | 
IntGrouper
Grouper specialized for the primitive int type | 
| IntGrouper.IntGrouperHashFunction | 
| LimitedBufferHashGrouper.BufferGrouperOffsetHeapIndexUpdater | 
| LimitedTemporaryStorage
 An area for limited temporary storage on disk. 
 | 
| LimitedTemporaryStorage.LimitedOutputStream | 
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