Uses of Class
org.apache.drill.metastore.metadata.BaseMetadata

Packages that use BaseMetadata

Package	Description
org.apache.drill.exec.physical.base
org.apache.drill.exec.store.parquet
org.apache.drill.metastore.metadata
org.apache.drill.metastore.util

Uses of BaseMetadata in org.apache.drill.exec.physical.base

Methods in org.apache.drill.exec.physical.base with type parameters of type BaseMetadata

Modifier and Type	Method and Description
protected <T extends BaseMetadata> List<T>	AbstractGroupScanWithMetadata.limitMetadata(Collection<T> metadataList, int maxRecords) Prunes specified metadata list and leaves minimum metadata instances count with general rows number which is not less than specified maxRecords.
protected static <T extends BaseMetadata & LocationProvider> Map<org.apache.hadoop.fs.Path,T>	AbstractGroupScanWithMetadata.pruneForPartitions(Map<org.apache.hadoop.fs.Path,T> metadataToPrune, List<PartitionMetadata> filteredPartitionMetadata) Removes metadata which does not belong to any of partitions in metadata list.
protected static <T extends BaseMetadata & LocationProvider> Map<org.apache.hadoop.fs.Path,T>	AbstractGroupScanWithMetadata.GroupScanWithMetadataFilterer.pruneForSegments(Map<org.apache.hadoop.fs.Path,T> metadataToPrune, Map<org.apache.hadoop.fs.Path,SegmentMetadata> filteredSegmentMetadata) Removes metadata which does not belong to any of partitions in metadata list.

Uses of BaseMetadata in org.apache.drill.exec.store.parquet

Classes in org.apache.drill.exec.store.parquet with type parameters of type BaseMetadata

Modifier and Type	Class and Description
class	ParquetGroupScanStatistics<T extends BaseMetadata & LocationProvider> Holds common statistics about data in parquet group scan, including information about total row count, columns counts, partition columns.

Methods in org.apache.drill.exec.store.parquet with type parameters of type BaseMetadata

Modifier and Type	Method and Description
protected static <T extends BaseMetadata & LocationProvider> org.apache.drill.shaded.guava.com.google.common.collect.Multimap<org.apache.hadoop.fs.Path,T>	AbstractParquetGroupScan.pruneForPartitions(org.apache.drill.shaded.guava.com.google.common.collect.Multimap<org.apache.hadoop.fs.Path,T> metadataToPrune, List<PartitionMetadata> filteredPartitionMetadata) Removes metadata which does not belong to any of partitions in metadata list.
protected static <T extends BaseMetadata & LocationProvider> org.apache.drill.shaded.guava.com.google.common.collect.Multimap<org.apache.hadoop.fs.Path,T>	AbstractParquetGroupScan.RowGroupScanFilterer.pruneForSegments(org.apache.drill.shaded.guava.com.google.common.collect.Multimap<org.apache.hadoop.fs.Path,T> metadataToPrune, Map<org.apache.hadoop.fs.Path,SegmentMetadata> filteredSegmentMetadata) Removes metadata which does not belong to any of segments in metadata list.

Uses of BaseMetadata in org.apache.drill.metastore.metadata

Subclasses of BaseMetadata in org.apache.drill.metastore.metadata

Modifier and Type	Class and Description
class	BaseTableMetadata Base implementation of TableMetadata interface.
class	FileMetadata Metadata which corresponds to the file level of table.
class	PartitionMetadata Represents a metadata for the table part, which corresponds to the specific partition key.
class	RowGroupMetadata Metadata which corresponds to the row group level of table.
class	SegmentMetadata Metadata which corresponds to the segment level of table.

Methods in org.apache.drill.metastore.metadata that return BaseMetadata

Modifier and Type	Method and Description
abstract BaseMetadata	BaseMetadata.BaseMetadataBuilder.build()

Uses of BaseMetadata in org.apache.drill.metastore.util

Methods in org.apache.drill.metastore.util with type parameters of type BaseMetadata

Modifier and Type	Method and Description
static <T extends BaseMetadata> Map<SchemaPath,ColumnStatistics<?>>	TableMetadataUtils.mergeColumnsStatistics(Collection<T> metadataList, Set<SchemaPath> columns, List<CollectableColumnStatisticsKind<?>> statisticsToCollect) Merges list of specified metadata into the map of ColumnStatistics with columns as keys.

Method parameters in org.apache.drill.metastore.util with type arguments of type BaseMetadata

Modifier and Type	Method and Description
static TableMetadata	TableMetadataUtils.updateRowCount(TableMetadata tableMetadata, Collection<? extends BaseMetadata> statistics) Updates row count and column nulls count for specified table metadata and returns new TableMetadata instance with updated statistics.