org.apache.drill.exec.store.parquet.stat

Class ParquetMetaStatCollector

java.lang.Object

org.apache.drill.exec.store.parquet.stat.ParquetMetaStatCollector

All Implemented Interfaces:

ColumnStatCollector

public class ParquetMetaStatCollector
extends Object
implements ColumnStatCollector

Constructor Summary

Constructors

Constructor and Description
ParquetMetaStatCollector(Metadata.ParquetTableMetadataBase parquetTableMetadata, List<? extends Metadata.ColumnMetadata> columnMetadataList, Map<String,String> implicitColValues)

Method Summary

Methods

Modifier and Type	Method and Description
Map<SchemaPath,ColumnStatistics>	collectColStat(Set<SchemaPath> fields) Given a list of fields (SchemaPath), return mapping from field to its corresponding ColumnStatistics

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ParquetMetaStatCollector

public ParquetMetaStatCollector(Metadata.ParquetTableMetadataBase parquetTableMetadata,
                        List<? extends Metadata.ColumnMetadata> columnMetadataList,
                        Map<String,String> implicitColValues)

Method Detail

collectColStat

public Map<SchemaPath,ColumnStatistics> collectColStat(Set<SchemaPath> fields)

Description copied from interface: ColumnStatCollector

Given a list of fields (SchemaPath), return mapping from field to its corresponding ColumnStatistics

Specified by:

collectColStat in interface ColumnStatCollector

Returns: