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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.parquet;
import java.util.LinkedList;
import java.util.List;
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.logical.FormatPluginConfig;
import org.apache.drill.common.logical.StoragePluginConfig;
import org.apache.drill.exec.physical.base.PhysicalOperator;
import org.apache.drill.exec.proto.UserBitShared.CoreOperatorType;
import org.apache.drill.exec.store.ColumnExplorer;
import org.apache.drill.exec.store.StoragePluginRegistry;
import com.fasterxml.jackson.annotation.JacksonInject;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonTypeName;
import org.apache.drill.shaded.guava.com.google.common.base.Preconditions;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
// Class containing information for reading a single parquet row group from HDFS
@JsonTypeName("parquet-row-group-scan")
public class ParquetRowGroupScan extends AbstractParquetRowGroupScan {
private static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(ParquetRowGroupScan.class);
private final ParquetFormatPlugin formatPlugin;
private final ParquetFormatConfig formatConfig;
private final Path selectionRoot;
@JsonCreator
public ParquetRowGroupScan(@JacksonInject StoragePluginRegistry registry,
@JsonProperty("userName") String userName,
@JsonProperty("storageConfig") StoragePluginConfig storageConfig,
@JsonProperty("formatConfig") FormatPluginConfig formatConfig,
@JsonProperty("rowGroupReadEntries") LinkedList<RowGroupReadEntry> rowGroupReadEntries,
@JsonProperty("columns") List<SchemaPath> columns,
@JsonProperty("readerConfig") ParquetReaderConfig readerConfig,
@JsonProperty("selectionRoot") Path selectionRoot,
@JsonProperty("filter") LogicalExpression filter) throws ExecutionSetupException {
this(userName,
(ParquetFormatPlugin) registry.getFormatPlugin(Preconditions.checkNotNull(storageConfig), Preconditions.checkNotNull(formatConfig)),
rowGroupReadEntries,
columns,
readerConfig,
selectionRoot,
filter);
}
public ParquetRowGroupScan(String userName,
ParquetFormatPlugin formatPlugin,
List<RowGroupReadEntry> rowGroupReadEntries,
List<SchemaPath> columns,
ParquetReaderConfig readerConfig,
Path selectionRoot,
LogicalExpression filter) {
super(userName, rowGroupReadEntries, columns, readerConfig, filter);
this.formatPlugin = Preconditions.checkNotNull(formatPlugin, "Could not find format config for the given configuration");
this.formatConfig = formatPlugin.getConfig();
this.selectionRoot = selectionRoot;
}
@JsonProperty
public StoragePluginConfig getStorageConfig() {
return formatPlugin.getStorageConfig();
}
@JsonProperty
public ParquetFormatConfig getFormatConfig() {
return formatConfig;
}
@JsonProperty
public Path getSelectionRoot() {
return selectionRoot;
}
@JsonIgnore
public ParquetFormatPlugin getStorageEngine() {
return formatPlugin;
}
@Override
public PhysicalOperator getNewWithChildren(List<PhysicalOperator> children) {
Preconditions.checkArgument(children.isEmpty());
return new ParquetRowGroupScan(getUserName(), formatPlugin, rowGroupReadEntries, columns, readerConfig, selectionRoot, filter);
}
@Override
public int getOperatorType() {
return CoreOperatorType.PARQUET_ROW_GROUP_SCAN_VALUE;
}
@Override
public AbstractParquetRowGroupScan copy(List<SchemaPath> columns) {
return new ParquetRowGroupScan(getUserName(), formatPlugin, rowGroupReadEntries, columns, readerConfig, selectionRoot, filter);
}
@Override
public Configuration getFsConf(RowGroupReadEntry rowGroupReadEntry) {
return formatPlugin.getFsConf();
}
@Override
public boolean supportsFileImplicitColumns() {
return selectionRoot != null;
}
@Override
public List<String> getPartitionValues(RowGroupReadEntry rowGroupReadEntry) {
return ColumnExplorer.listPartitionValues(rowGroupReadEntry.getPath(), selectionRoot, false);
}
}
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