| /** |
| * 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.sqoop.mapreduce.mainframe; |
| |
| import org.apache.hadoop.io.LongWritable; |
| import org.apache.hadoop.io.NullWritable; |
| import org.apache.hadoop.mapreduce.lib.output.MultipleOutputs; |
| import org.apache.sqoop.config.ConfigurationConstants; |
| import org.apache.sqoop.lib.SqoopRecord; |
| import org.apache.sqoop.mapreduce.AutoProgressMapper; |
| |
| import java.io.IOException; |
| |
| public abstract class AbstractMainframeDatasetImportMapper<KEY> |
| extends AutoProgressMapper<LongWritable, SqoopRecord, KEY, NullWritable> { |
| |
| private MainframeDatasetInputSplit inputSplit; |
| private MultipleOutputs<KEY, NullWritable> multiFileWriter; |
| private long numberOfRecords; |
| |
| public void map(LongWritable key, SqoopRecord val, Context context) |
| throws IOException, InterruptedException { |
| String dataset = inputSplit.getCurrentDataset(); |
| numberOfRecords++; |
| multiFileWriter.write(createOutKey(val), NullWritable.get(), dataset); |
| } |
| |
| @Override |
| protected void setup(Context context) |
| throws IOException, InterruptedException { |
| super.setup(context); |
| inputSplit = (MainframeDatasetInputSplit)context.getInputSplit(); |
| multiFileWriter = new MultipleOutputs<>(context); |
| numberOfRecords = 0; |
| } |
| |
| @Override |
| protected void cleanup(Context context) |
| throws IOException, InterruptedException { |
| super.cleanup(context); |
| multiFileWriter.close(); |
| context.getCounter( |
| ConfigurationConstants.COUNTER_GROUP_MAPRED_TASK_COUNTERS, |
| ConfigurationConstants.COUNTER_MAP_OUTPUT_RECORDS) |
| .increment(numberOfRecords); |
| } |
| |
| protected abstract KEY createOutKey(SqoopRecord sqoopRecord); |
| } |