| /* |
| * 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 org.apache.drill.shaded.guava.com.google.common.base.Preconditions; |
| import org.apache.drill.common.exceptions.ExecutionSetupException; |
| import org.apache.drill.exec.ops.ExecutorFragmentContext; |
| import org.apache.drill.exec.ops.OperatorContext; |
| import org.apache.drill.exec.physical.impl.BatchCreator; |
| import org.apache.drill.exec.record.CloseableRecordBatch; |
| import org.apache.drill.exec.record.RecordBatch; |
| import org.apache.drill.exec.server.options.OptionManager; |
| import org.apache.drill.exec.store.dfs.DrillFileSystem; |
| import org.apache.drill.exec.store.parquet.AbstractParquetScanBatchCreator; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.Path; |
| |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| public class HiveDrillNativeParquetScanBatchCreator extends AbstractParquetScanBatchCreator implements BatchCreator<HiveDrillNativeParquetRowGroupScan> { |
| |
| @Override |
| public CloseableRecordBatch getBatch(ExecutorFragmentContext context, HiveDrillNativeParquetRowGroupScan rowGroupScan, List<RecordBatch> children) throws ExecutionSetupException { |
| Preconditions.checkArgument(children.isEmpty()); |
| OperatorContext oContext = context.newOperatorContext(rowGroupScan); |
| return getBatch(context, rowGroupScan, oContext); |
| } |
| |
| @Override |
| protected AbstractDrillFileSystemManager getDrillFileSystemCreator(OperatorContext operatorContext, OptionManager optionManager) { |
| return new HiveDrillNativeParquetDrillFileSystemManager(operatorContext); |
| } |
| |
| /** |
| * Caches file system per path and returns file system from cache if it exists there. |
| * Creates only non-tracking file systems. |
| */ |
| private class HiveDrillNativeParquetDrillFileSystemManager extends AbstractDrillFileSystemManager { |
| |
| private final Map<Path, DrillFileSystem> fileSystems; |
| |
| HiveDrillNativeParquetDrillFileSystemManager(OperatorContext operatorContext) { |
| super(operatorContext); |
| this.fileSystems = new HashMap<>(); |
| } |
| |
| @Override |
| protected DrillFileSystem get(Configuration config, Path path) throws ExecutionSetupException { |
| DrillFileSystem fs = fileSystems.get(path); |
| if (fs == null) { |
| try { |
| fs = operatorContext.newNonTrackingFileSystem(config); |
| } catch (IOException e) { |
| throw new ExecutionSetupException(String.format("Failed to create non-tracking DrillFileSystem: %s", e.getMessage()), e); |
| } |
| fileSystems.put(path, fs); |
| } |
| return fs; |
| } |
| } |
| |
| } |