| /** |
| * 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.hadoop.vertica; |
| |
| import java.io.IOException; |
| import java.sql.Connection; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.io.Text; |
| import org.apache.hadoop.mapreduce.JobContext; |
| import org.apache.hadoop.mapreduce.OutputCommitter; |
| import org.apache.hadoop.mapreduce.OutputFormat; |
| import org.apache.hadoop.mapreduce.RecordWriter; |
| import org.apache.hadoop.mapreduce.TaskAttemptContext; |
| import org.apache.hadoop.mapreduce.lib.output.FileOutputCommitter; |
| import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat; |
| |
| public class VerticaStreamingOutput extends OutputFormat<Text, Text> { |
| private static final Log LOG = LogFactory |
| .getLog(VerticaStreamingOutput.class); |
| |
| String delimiter = VerticaConfiguration.DELIMITER; |
| String terminator = VerticaConfiguration.RECORD_TERMINATER; |
| |
| public void checkOutputSpecs(JobContext context) throws IOException { |
| Configuration conf = context.getConfiguration(); |
| VerticaUtil.checkOutputSpecs(conf); |
| VerticaConfiguration vtconfig = new VerticaConfiguration(conf); |
| delimiter = vtconfig.getOutputDelimiter(); |
| terminator = vtconfig.getOutputRecordTerminator(); |
| LOG.debug("Vertica output using delimiter '" + delimiter |
| + "' and terminator '" + terminator + "'"); |
| } |
| |
| public RecordWriter<Text, Text> getRecordWriter(TaskAttemptContext context) |
| throws IOException { |
| Configuration conf = context.getConfiguration(); |
| VerticaConfiguration vtconfig = new VerticaConfiguration(conf); |
| |
| String name = context.getJobName(); |
| delimiter = vtconfig.getOutputDelimiter(); |
| terminator = vtconfig.getOutputRecordTerminator(); |
| |
| // TODO: use explicit date formats |
| String table = vtconfig.getOutputTableName(); |
| String copyStmt = "COPY " + table + " FROM STDIN" + " DELIMITER '" |
| + delimiter + "' RECORD TERMINATOR '" + terminator + "' STREAM NAME '" |
| + name + "' DIRECT"; |
| |
| try { |
| Connection conn = vtconfig.getConnection(true); |
| return new VerticaStreamingRecordWriter(conn, copyStmt, table); |
| } catch (Exception e) { |
| throw new IOException(e); |
| } |
| } |
| |
| public OutputCommitter getOutputCommitter(TaskAttemptContext context) |
| throws IOException, InterruptedException { |
| return new FileOutputCommitter(FileOutputFormat.getOutputPath(context), |
| context); |
| } |
| } |