SegmentIndexCreationDriver (Pinot Segment Service Provider Interface 0.12.1 API)

All Superinterfaces:

Serializable
```
public interface SegmentIndexCreationDriver
extends Serializable
```
Driver that creates and writes index segments to disk from data that is stored on disk. Nov 6, 2014

Method Summary

Modifier and Type	Method	Description
`void`	`build()`	Builds an index segment and writes it to disk.
`ColumnStatistics`	`getColumnStatisticsCollector(String columnName)`	Get the stats collector for a column
`IngestionSchemaValidator`	`getIngestionSchemaValidator()`
`File`	`getOutputDirectory()`	Returns the path of the output directory
`String`	`getSegmentName()`
`void`	`init(SegmentGeneratorConfig config)`	Configures the segment generator with the given segment generator configuration, which contains the input file location, format, schema and other necessary information to create an index segment.

- Method Detail
  - init
```
void init(SegmentGeneratorConfig config)
   throws Exception
```
    Configures the segment generator with the given segment generator configuration, which contains the input file location, format, schema and other necessary information to create an index segment.
    
    Parameters:
    
    config - The configuration to use when building an index segment
    
    Throws:
    
    Exception
  - build
```
void build()
    throws Exception
```
    Builds an index segment and writes it to disk. The index segment creation extracts data from the input files, profiles each column and then builds indices based on the profiling information gathered.
    
    Throws:
    
    Exception
  - getSegmentName
```
String getSegmentName()
```
  - getColumnStatisticsCollector
```
ColumnStatistics getColumnStatisticsCollector(String columnName)
                                       throws Exception
```
    Get the stats collector for a column
    
    Parameters:
    
    columnName -
    
    Returns:
    
    AbstractColumnStatisticsCollector for the column.
    
    Throws:
    
    Exception
  - getOutputDirectory
```
File getOutputDirectory()
```
    Returns the path of the output directory
  - getIngestionSchemaValidator
```
IngestionSchemaValidator getIngestionSchemaValidator()
```