org.apache.drill.exec.metastore.store.parquet

Interface ParquetMetadataProvider

All Superinterfaces:

TableMetadataProvider

All Known Subinterfaces:

ParquetTableMetadataProvider

All Known Implementing Classes:

BaseParquetMetadataProvider, HiveParquetTableMetadataProvider, MetastoreParquetTableMetadataProvider, ParquetTableMetadataProviderImpl

public interface ParquetMetadataProvider
extends TableMetadataProvider

Interface for providing table, partition, file etc. metadata for specific table with parquet files.

Method Summary

Modifier and Type	Method and Description
List<ReadEntryWithPath>	getEntries() Returns list of ReadEntryWithPath instances which represents paths to files to be scanned.
Set<org.apache.hadoop.fs.Path>	getFileSet() Returns list of file locations for table.
List<org.apache.hadoop.fs.Path>	getLocations() Returns list of file paths which belong to current table.
List<RowGroupMetadata>	getRowGroupsMeta() Returns list of RowGroupMetadata instances which provides metadata for specific row group and its columns.
org.apache.drill.shaded.guava.com.google.common.collect.Multimap<org.apache.hadoop.fs.Path,RowGroupMetadata>	getRowGroupsMetadataMap() Returns multimap of RowGroupMetadata instances which provides metadata for specific row group and its columns mapped to their locations.

Methods inherited from interface org.apache.drill.metastore.metadata.TableMetadataProvider

checkMetadataVersion, getFileMetadata, getFilesForPartition, getFilesMetadataMap, getNonInterestingColumnsMetadata, getPartitionColumns, getPartitionMetadata, getPartitionsMetadata, getSegmentsMetadataMap, getTableMetadata

Method Detail

getEntries

List<ReadEntryWithPath> getEntries()

Returns list of ReadEntryWithPath instances which represents paths to files to be scanned.

Returns:

list of ReadEntryWithPath instances whith file paths

getRowGroupsMeta

List<RowGroupMetadata> getRowGroupsMeta()

Returns list of RowGroupMetadata instances which provides metadata for specific row group and its columns.

Returns:

list of RowGroupMetadata instances

getLocations

List<org.apache.hadoop.fs.Path> getLocations()

Returns list of file paths which belong to current table.

Returns:

list of file paths

getRowGroupsMetadataMap

org.apache.drill.shaded.guava.com.google.common.collect.Multimap<org.apache.hadoop.fs.Path,RowGroupMetadata> getRowGroupsMetadataMap()

Returns multimap of RowGroupMetadata instances which provides metadata for specific row group and its columns mapped to their locations.

Returns:

multimap of RowGroupMetadata instances

getFileSet

Set<org.apache.hadoop.fs.Path> getFileSet()

Returns list of file locations for table.

Returns:

list of file locations for table