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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.store.hive;
import com.fasterxml.jackson.annotation.JacksonInject;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonTypeName;
import org.apache.drill.exec.store.parquet.ParquetReaderConfig;
import org.apache.drill.shaded.guava.com.google.common.base.Preconditions;
import org.apache.drill.common.exceptions.ExecutionSetupException;
import org.apache.drill.common.expression.LogicalExpression;
import org.apache.drill.common.expression.SchemaPath;
import org.apache.drill.common.expression.ValueExpressions;
import org.apache.drill.exec.physical.base.GroupScan;
import org.apache.drill.exec.physical.base.PhysicalOperator;
import org.apache.drill.exec.physical.base.SubScan;
import org.apache.drill.exec.proto.CoordinationProtos;
import org.apache.drill.exec.store.StoragePluginRegistry;
import org.apache.drill.exec.store.dfs.FileSelection;
import org.apache.drill.exec.store.dfs.ReadEntryWithPath;
import org.apache.drill.exec.store.hive.HiveMetadataProvider.LogicalInputSplit;
import org.apache.drill.exec.store.parquet.AbstractParquetGroupScan;
import org.apache.drill.exec.store.parquet.RowGroupReadEntry;
import org.apache.drill.exec.store.parquet.metadata.Metadata;
import org.apache.drill.exec.store.parquet.RowGroupInfo;
import org.apache.drill.exec.util.ImpersonationUtil;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hive.metastore.api.Partition;
import org.apache.hadoop.hive.ql.io.parquet.ProjectionPusher;
import org.apache.hadoop.mapred.FileSplit;
import org.apache.hadoop.mapred.InputSplit;
import org.apache.hadoop.mapred.JobConf;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
@JsonTypeName("hive-drill-native-parquet-scan")
public class HiveDrillNativeParquetScan extends AbstractParquetGroupScan {
private final HiveStoragePlugin hiveStoragePlugin;
private final HivePartitionHolder hivePartitionHolder;
private final Map<String, String> confProperties;
@JsonCreator
public HiveDrillNativeParquetScan(@JacksonInject StoragePluginRegistry engineRegistry,
@JsonProperty("userName") String userName,
@JsonProperty("hiveStoragePluginConfig") HiveStoragePluginConfig hiveStoragePluginConfig,
@JsonProperty("columns") List<SchemaPath> columns,
@JsonProperty("entries") List<ReadEntryWithPath> entries,
@JsonProperty("hivePartitionHolder") HivePartitionHolder hivePartitionHolder,
@JsonProperty("confProperties") Map<String, String> confProperties,
@JsonProperty("readerConfig") ParquetReaderConfig readerConfig,
@JsonProperty("filter") LogicalExpression filter) throws IOException, ExecutionSetupException {
super(ImpersonationUtil.resolveUserName(userName), columns, entries, readerConfig, filter);
this.hiveStoragePlugin = (HiveStoragePlugin) engineRegistry.getPlugin(hiveStoragePluginConfig);
this.hivePartitionHolder = hivePartitionHolder;
this.confProperties = confProperties;
init();
}
public HiveDrillNativeParquetScan(String userName,
List<SchemaPath> columns,
HiveStoragePlugin hiveStoragePlugin,
List<LogicalInputSplit> logicalInputSplits,
Map<String, String> confProperties,
ParquetReaderConfig readerConfig) throws IOException {
this(userName, columns, hiveStoragePlugin, logicalInputSplits, confProperties, readerConfig, ValueExpressions.BooleanExpression.TRUE);
}
public HiveDrillNativeParquetScan(String userName,
List<SchemaPath> columns,
HiveStoragePlugin hiveStoragePlugin,
List<LogicalInputSplit> logicalInputSplits,
Map<String, String> confProperties,
ParquetReaderConfig readerConfig,
LogicalExpression filter) throws IOException {
super(userName, columns, new ArrayList<>(), readerConfig, filter);
this.hiveStoragePlugin = hiveStoragePlugin;
this.hivePartitionHolder = new HivePartitionHolder();
this.confProperties = confProperties;
for (LogicalInputSplit logicalInputSplit : logicalInputSplits) {
Iterator<InputSplit> iterator = logicalInputSplit.getInputSplits().iterator();
// logical input split contains list of splits by files
// we need to read path of only one to get file path
assert iterator.hasNext();
InputSplit split = iterator.next();
assert split instanceof FileSplit;
FileSplit fileSplit = (FileSplit) split;
Path finalPath = fileSplit.getPath();
Path pathString = Path.getPathWithoutSchemeAndAuthority(finalPath);
entries.add(new ReadEntryWithPath(pathString));
// store partition values per path
Partition partition = logicalInputSplit.getPartition();
if (partition != null) {
hivePartitionHolder.add(pathString, partition.getValues());
}
}
init();
}
private HiveDrillNativeParquetScan(HiveDrillNativeParquetScan that) {
super(that);
this.hiveStoragePlugin = that.hiveStoragePlugin;
this.hivePartitionHolder = that.hivePartitionHolder;
this.confProperties = that.confProperties;
}
@JsonProperty
public HiveStoragePluginConfig getHiveStoragePluginConfig() {
return hiveStoragePlugin.getConfig();
}
@JsonProperty
public HivePartitionHolder getHivePartitionHolder() {
return hivePartitionHolder;
}
@JsonProperty
public Map<String, String> getConfProperties() {
return confProperties;
}
@Override
public SubScan getSpecificScan(int minorFragmentId) {
List<RowGroupReadEntry> readEntries = getReadEntries(minorFragmentId);
HivePartitionHolder subPartitionHolder = new HivePartitionHolder();
for (RowGroupReadEntry readEntry : readEntries) {
List<String> values = hivePartitionHolder.get(readEntry.getPath());
subPartitionHolder.add(readEntry.getPath(), values);
}
return new HiveDrillNativeParquetRowGroupScan(getUserName(), hiveStoragePlugin, readEntries, columns, subPartitionHolder,
confProperties, readerConfig, filter);
}
@Override
public PhysicalOperator getNewWithChildren(List<PhysicalOperator> children) {
Preconditions.checkArgument(children.isEmpty());
return new HiveDrillNativeParquetScan(this);
}
@Override
public HiveDrillNativeParquetScan clone(FileSelection selection) throws IOException {
HiveDrillNativeParquetScan newScan = new HiveDrillNativeParquetScan(this);
newScan.modifyFileSelection(selection);
newScan.init();
return newScan;
}
@Override
public GroupScan clone(List<SchemaPath> columns) {
HiveDrillNativeParquetScan newScan = new HiveDrillNativeParquetScan(this);
newScan.columns = columns;
return newScan;
}
@Override
public String toString() {
StringBuilder builder = new StringBuilder();
builder.append("HiveDrillNativeParquetScan [");
builder.append("entries=").append(entries);
builder.append(", numFiles=").append(getEntries().size());
builder.append(", numRowGroups=").append(rowGroupInfos.size());
String filterString = getFilterString();
if (!filterString.isEmpty()) {
builder.append(", filter=").append(filterString);
}
builder.append(", columns=").append(columns);
builder.append("]");
return builder.toString();
}
@Override
protected void initInternal() throws IOException {
Map<FileStatus, FileSystem> fileStatusConfMap = new LinkedHashMap<>();
for (ReadEntryWithPath entry : entries) {
Path path = entry.getPath();
Configuration conf = new ProjectionPusher().pushProjectionsAndFilters(
new JobConf(hiveStoragePlugin.getHiveConf()),
path.getParent());
FileSystem fs = path.getFileSystem(conf);
fileStatusConfMap.put(fs.getFileStatus(Path.getPathWithoutSchemeAndAuthority(path)), fs);
}
parquetTableMetadata = Metadata.getParquetTableMetadata(fileStatusConfMap, readerConfig);
}
@Override
protected Collection<CoordinationProtos.DrillbitEndpoint> getDrillbits() {
return hiveStoragePlugin.getContext().getBits();
}
@Override
protected AbstractParquetGroupScan cloneWithFileSelection(Collection<Path> filePaths) throws IOException {
FileSelection newSelection = new FileSelection(null, new ArrayList<>(filePaths), null, null, false);
return clone(newSelection);
}
@Override
protected boolean supportsFileImplicitColumns() {
return false;
}
@Override
protected List<String> getPartitionValues(RowGroupInfo rowGroupInfo) {
return hivePartitionHolder.get(rowGroupInfo.getPath());
}
}
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