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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.drill.exec.planner.sql;
import io.netty.buffer.DrillBuf;
import org.apache.calcite.rel.core.TableScan;
import org.apache.calcite.util.BitSets;
import org.apache.drill.common.exceptions.ExecutionSetupException;
import org.apache.drill.common.expression.SchemaPath;
import org.apache.drill.common.types.TypeProtos;
import org.apache.drill.exec.physical.base.GroupScan;
import org.apache.drill.exec.planner.AbstractPartitionDescriptor;
import org.apache.drill.exec.planner.PartitionDescriptor;
import org.apache.drill.exec.planner.PartitionLocation;
import org.apache.drill.exec.planner.logical.DrillRel;
import org.apache.drill.exec.planner.logical.DrillScanRel;
import org.apache.drill.exec.planner.physical.PlannerSettings;
import org.apache.drill.exec.store.hive.HiveTableWrapper;
import org.apache.drill.exec.store.hive.HiveUtilities;
import org.apache.drill.exec.store.hive.HiveReadEntry;
import org.apache.drill.exec.store.hive.HiveScan;
import org.apache.drill.exec.vector.ValueVector;
import org.apache.hadoop.hive.metastore.api.Partition;
import java.util.BitSet;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import org.apache.hadoop.hive.serde2.typeinfo.PrimitiveTypeInfo;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfoUtils;
import org.apache.drill.shaded.guava.com.google.common.collect.Lists;
// Partition descriptor for hive tables
public class HivePartitionDescriptor extends AbstractPartitionDescriptor {
private final Map<String, Integer> partitionMap = new HashMap<>();
private final int numPartitionLevels;
private final DrillScanRel scanRel;
private final String defaultPartitionValue;
private final DrillBuf managedBuffer;
public HivePartitionDescriptor(@SuppressWarnings("unused") final PlannerSettings settings, final DrillScanRel scanRel,
final DrillBuf managedBuffer, final String defaultPartitionValue) {
int i = 0;
this.scanRel = scanRel;
this.managedBuffer = managedBuffer.reallocIfNeeded(256);
this.defaultPartitionValue = defaultPartitionValue;
for (HiveTableWrapper.FieldSchemaWrapper wrapper : ((HiveScan) scanRel.getGroupScan()).getHiveReadEntry().table.partitionKeys) {
partitionMap.put(wrapper.name, i);
i++;
}
numPartitionLevels = i;
}
@Override
public int getPartitionHierarchyIndex(String partitionName) {
return partitionMap.get(partitionName);
}
@Override
public boolean isPartitionName(String name) {
return (partitionMap.get(name) != null);
}
@Override
public int getMaxHierarchyLevel() {
return numPartitionLevels;
}
@Override
public String getBaseTableLocation() {
HiveReadEntry origEntry = ((HiveScan) scanRel.getGroupScan()).getHiveReadEntry();
return origEntry.table.getTable().getSd().getLocation();
}
@Override
public void populatePartitionVectors(ValueVector[] vectors, List<PartitionLocation> partitions,
BitSet partitionColumnBitSet, Map<Integer, String> fieldNameMap) {
int record = 0;
final HiveScan hiveScan = (HiveScan) scanRel.getGroupScan();
final Map<String, String> partitionNameTypeMap = hiveScan.getHiveReadEntry().table.getPartitionNameTypeMap();
for(PartitionLocation partitionLocation: partitions) {
for(int partitionColumnIndex : BitSets.toIter(partitionColumnBitSet)){
final String hiveType = partitionNameTypeMap.get(fieldNameMap.get(partitionColumnIndex));
final Object value = HiveUtilities.convertPartitionType(
TypeInfoUtils.getTypeInfoFromTypeString(hiveType),
partitionLocation.getPartitionValue(partitionColumnIndex),
defaultPartitionValue);
if (value != null) {
HiveUtilities.populateVector(vectors[partitionColumnIndex], managedBuffer, value, record, record + 1);
}
}
record++;
}
for(ValueVector v : vectors) {
if (v == null) {
continue;
}
v.getMutator().setValueCount(partitions.size());
}
}
@Override
public TypeProtos.MajorType getVectorType(SchemaPath column, PlannerSettings plannerSettings) {
HiveScan hiveScan = (HiveScan) scanRel.getGroupScan();
String partitionName = column.getAsNamePart().getName();
Map<String, String> partitionNameTypeMap = hiveScan.getHiveReadEntry().table.getPartitionNameTypeMap();
String hiveType = partitionNameTypeMap.get(partitionName);
PrimitiveTypeInfo primitiveTypeInfo = (PrimitiveTypeInfo) TypeInfoUtils.getTypeInfoFromTypeString(hiveType);
TypeProtos.MinorType partitionType = HiveUtilities.getMinorTypeFromHivePrimitiveTypeInfo(primitiveTypeInfo,
plannerSettings.getOptions());
return TypeProtos.MajorType.newBuilder().setMode(TypeProtos.DataMode.OPTIONAL).setMinorType(partitionType).build();
}
@Override
public Integer getIdIfValid(String name) {
return partitionMap.get(name);
}
@Override
protected void createPartitionSublists() {
List<PartitionLocation> locations = new LinkedList<>();
HiveReadEntry origEntry = ((HiveScan) scanRel.getGroupScan()).getHiveReadEntry();
for (Partition partition: origEntry.getPartitions()) {
locations.add(new HivePartitionLocation(partition.getValues(), partition.getSd().getLocation()));
}
locationSuperList = Lists.partition(locations, PartitionDescriptor.PARTITION_BATCH_SIZE);
sublistsCreated = true;
}
@Override
public TableScan createTableScan(List<PartitionLocation> newPartitions, boolean wasAllPartitionsPruned /* ignored */) throws Exception {
GroupScan newGroupScan = createNewGroupScan(newPartitions);
return new DrillScanRel(scanRel.getCluster(),
scanRel.getTraitSet().plus(DrillRel.DRILL_LOGICAL),
scanRel.getTable(),
newGroupScan,
scanRel.getRowType(),
scanRel.getColumns(),
true /*filter pushdown*/);
}
private GroupScan createNewGroupScan(List<PartitionLocation> newPartitionLocations) throws ExecutionSetupException {
HiveScan hiveScan = (HiveScan) scanRel.getGroupScan();
HiveReadEntry origReadEntry = hiveScan.getHiveReadEntry();
List<HiveTableWrapper.HivePartitionWrapper> oldPartitions = origReadEntry.partitions;
List<HiveTableWrapper.HivePartitionWrapper> newPartitions = Lists.newLinkedList();
for (HiveTableWrapper.HivePartitionWrapper part: oldPartitions) {
String partitionLocation = part.getPartition().getSd().getLocation();
for (PartitionLocation newPartitionLocation: newPartitionLocations) {
if (partitionLocation.equals(newPartitionLocation.getEntirePartitionLocation())) {
newPartitions.add(part);
}
}
}
HiveReadEntry newReadEntry = new HiveReadEntry(origReadEntry.table, newPartitions);
return hiveScan.clone(newReadEntry);
}
}
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