io.delta.kernel

Interface DataWriteContext

All Known Implementing Classes:

DataWriteContextImpl

@Evolving
public interface DataWriteContext

Contains the context for writing data to Delta table. The context is created for each partition for partitioned table or once per table for un-partitioned table. It is created using Transaction.getWriteContext(Engine, Row, Map) (String, Map, List)}.

Since:

3.2.0

Method Summary

Modifier and Type	Method and Description
java.util.List<Column>	getStatisticsColumns() Returns the list of Column that the connector can optionally collect statistics.
String	getTargetDirectory() Returns the target directory where the data should be written.

Method Detail

getTargetDirectory

String getTargetDirectory()

Returns the target directory where the data should be written.

Returns:

fully qualified path of the target directory

getStatisticsColumns

java.util.List<Column> getStatisticsColumns()

Returns the list of Column that the connector can optionally collect statistics. Each Column is a reference to a top-level or nested column in the table.

Statistics collections can be skipped or collected for a partial list of the returned Columns. When stats are present in the written Delta log, they can be used to optimize query performance.

Returns:

schema of the statistics