All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default void`	`close()`
`long`	`getEstimatedSize()`
`OrcDataSourceId`	`getId()`
`long`	`getReadBytes()`
`long`	`getReadTimeNanos()`
`long`	`getRetainedSize()`	Gets the memory size of this data source.
`io.airlift.slice.Slice`	`readFully(long position, int length)`
`<K> Map<K,OrcDataReader>`	`readFully(Map<K,DiskRange> diskRanges)`
`io.airlift.slice.Slice`	`readTail(int length)`

getRetainedSize
```
long getRetainedSize()
```
Gets the memory size of this data source. This only includes memory used for the data source and not memory assigned to a specific OrcDataReader.

io.airlift.slice.Slice readTail(int length)
                         throws IOException

io.airlift.slice.Slice readFully(long position,
                                 int length)
                          throws IOException

<K> Map<K,OrcDataReader> readFully(Map<K,DiskRange> diskRanges)
                                  throws IOException

Interface OrcDataSource