org.apache.hadoop.hive.ql.optimizer.calcite.stats

Class HiveRelMdDistinctRowCount

java.lang.Object

org.apache.calcite.rel.metadata.RelMdDistinctRowCount

org.apache.hadoop.hive.ql.optimizer.calcite.stats.HiveRelMdDistinctRowCount

All Implemented Interfaces:

org.apache.calcite.rel.metadata.MetadataHandler<org.apache.calcite.rel.metadata.BuiltInMetadata.DistinctRowCount>

public class HiveRelMdDistinctRowCount
extends org.apache.calcite.rel.metadata.RelMdDistinctRowCount

Field Summary

Fields

Modifier and Type	Field and Description
static org.apache.calcite.rel.metadata.RelMetadataProvider	SOURCE

Method Summary

Modifier and Type	Method and Description
Double	getDistinctRowCount(org.apache.calcite.rel.convert.Converter r, org.apache.calcite.rel.metadata.RelMetadataQuery mq, org.apache.calcite.util.ImmutableBitSet groupKey, org.apache.calcite.rex.RexNode predicate)
Double	getDistinctRowCount(HiveAntiJoin rel, org.apache.calcite.rel.metadata.RelMetadataQuery mq, org.apache.calcite.util.ImmutableBitSet groupKey, org.apache.calcite.rex.RexNode predicate)
Double	getDistinctRowCount(HiveJoin rel, org.apache.calcite.rel.metadata.RelMetadataQuery mq, org.apache.calcite.util.ImmutableBitSet groupKey, org.apache.calcite.rex.RexNode predicate)
Double	getDistinctRowCount(HiveSemiJoin rel, org.apache.calcite.rel.metadata.RelMetadataQuery mq, org.apache.calcite.util.ImmutableBitSet groupKey, org.apache.calcite.rex.RexNode predicate)
Double	getDistinctRowCount(HiveTableScan htRel, org.apache.calcite.rel.metadata.RelMetadataQuery mq, org.apache.calcite.util.ImmutableBitSet groupKey, org.apache.calcite.rex.RexNode predicate)
Double	getDistinctRowCount(JdbcHiveTableScan rel, org.apache.calcite.rel.metadata.RelMetadataQuery mq, org.apache.calcite.util.ImmutableBitSet groupKey, org.apache.calcite.rex.RexNode predicate) Currently Calcite doesn't handle return row counts for Converters and JdbcHiveTableScan.
static Double	getDistinctRowCount(org.apache.calcite.rel.RelNode r, org.apache.calcite.rel.metadata.RelMetadataQuery mq, int indx)

Methods inherited from class org.apache.calcite.rel.metadata.RelMdDistinctRowCount

getDef, getDistinctRowCount, getDistinctRowCount, getDistinctRowCount, getDistinctRowCount, getDistinctRowCount, getDistinctRowCount, getDistinctRowCount, getDistinctRowCount, getDistinctRowCount, getDistinctRowCount, getDistinctRowCount

Methods inherited from class java.lang.Object

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

Field Detail

SOURCE

public static final org.apache.calcite.rel.metadata.RelMetadataProvider SOURCE

Method Detail

getDistinctRowCount

public Double getDistinctRowCount(HiveTableScan htRel,
                                  org.apache.calcite.rel.metadata.RelMetadataQuery mq,
                                  org.apache.calcite.util.ImmutableBitSet groupKey,
                                  org.apache.calcite.rex.RexNode predicate)

getDistinctRowCount

public static Double getDistinctRowCount(org.apache.calcite.rel.RelNode r,
                                         org.apache.calcite.rel.metadata.RelMetadataQuery mq,
                                         int indx)

getDistinctRowCount

public Double getDistinctRowCount(HiveSemiJoin rel,
                                  org.apache.calcite.rel.metadata.RelMetadataQuery mq,
                                  org.apache.calcite.util.ImmutableBitSet groupKey,
                                  org.apache.calcite.rex.RexNode predicate)

getDistinctRowCount

public Double getDistinctRowCount(HiveAntiJoin rel,
                                  org.apache.calcite.rel.metadata.RelMetadataQuery mq,
                                  org.apache.calcite.util.ImmutableBitSet groupKey,
                                  org.apache.calcite.rex.RexNode predicate)

getDistinctRowCount

public Double getDistinctRowCount(HiveJoin rel,
                                  org.apache.calcite.rel.metadata.RelMetadataQuery mq,
                                  org.apache.calcite.util.ImmutableBitSet groupKey,
                                  org.apache.calcite.rex.RexNode predicate)

getDistinctRowCount

public Double getDistinctRowCount(JdbcHiveTableScan rel,
                                  org.apache.calcite.rel.metadata.RelMetadataQuery mq,
                                  org.apache.calcite.util.ImmutableBitSet groupKey,
                                  org.apache.calcite.rex.RexNode predicate)

Currently Calcite doesn't handle return row counts for Converters and JdbcHiveTableScan. These method checks for these objects and calls appropriate methods. https://issues.apache.org/jira/browse/HIVE-25364

getDistinctRowCount

public Double getDistinctRowCount(org.apache.calcite.rel.convert.Converter r,
                                  org.apache.calcite.rel.metadata.RelMetadataQuery mq,
                                  org.apache.calcite.util.ImmutableBitSet groupKey,
                                  org.apache.calcite.rex.RexNode predicate)