All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`void`	`beginRowGroup()`
`void`	`close()`
`Map<OrcColumnId,ColumnStatistics>`	`finishRowGroup()`
`List<StreamDataOutput>`	`getBloomFilters(CompressedMetadataWriter metadataWriter)`
`long`	`getBufferedBytes()`	This method returns the size of the flushed data plus any unflushed data.
`Map<OrcColumnId,ColumnEncoding>`	`getColumnEncodings()`
`Map<OrcColumnId,ColumnStatistics>`	`getColumnStripeStatistics()`
`List<StreamDataOutput>`	`getDataStreams()`	Get the data streams to be written.
`List<StreamDataOutput>`	`getIndexStreams(CompressedMetadataWriter metadataWriter)`	Write index streams to the output and return the streams in the order in which they were written.
`default List<ColumnWriter>`	`getNestedColumnWriters()`
`long`	`getRetainedBytes()`
`void`	`reset()`
`void`	`writeBlock(Block block)`

default List<ColumnWriter> getNestedColumnWriters()

Map<OrcColumnId,ColumnEncoding> getColumnEncodings()

Map<OrcColumnId,ColumnStatistics> finishRowGroup()

Map<OrcColumnId,ColumnStatistics> getColumnStripeStatistics()

List<StreamDataOutput> getBloomFilters(CompressedMetadataWriter metadataWriter)
                                throws IOException

getDataStreams
```
List<StreamDataOutput> getDataStreams()
```
Get the data streams to be written.

getBufferedBytes
```
long getBufferedBytes()
```
This method returns the size of the flushed data plus any unflushed data. If the output is compressed, flush data size is the size after compression.

Interface ColumnWriter