| /** |
| * 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.postgresql; |
| |
| import java.io.IOException; |
| import com.cloudera.sqoop.manager.ExportJobContext; |
| import com.cloudera.sqoop.util.ExportException; |
| import com.cloudera.sqoop.SqoopOptions; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.io.LongWritable; |
| import org.apache.hadoop.io.Text; |
| import org.apache.hadoop.mapreduce.InputFormat; |
| import org.apache.hadoop.mapreduce.Job; |
| import org.apache.hadoop.mapreduce.Mapper; |
| import org.apache.hadoop.mapreduce.Reducer; |
| import org.apache.hadoop.mapreduce.OutputFormat; |
| import org.apache.sqoop.lib.DelimiterSet; |
| import org.apache.sqoop.manager.ConnManager; |
| import org.apache.sqoop.mapreduce.ExportJobBase; |
| import org.apache.sqoop.mapreduce.db.DBConfiguration; |
| import org.apache.sqoop.orm.TableClassName; |
| |
| |
| /** |
| * Class that runs an export job using pg_bulkload in the mapper. |
| */ |
| public class PGBulkloadExportJob extends ExportJobBase { |
| |
| public static final Log LOG = |
| LogFactory.getLog(PGBulkloadExportJob.class.getName()); |
| |
| |
| public PGBulkloadExportJob(final ExportJobContext context) { |
| super(context); |
| } |
| |
| |
| public PGBulkloadExportJob(final ExportJobContext ctxt, |
| final Class<? extends Mapper> mapperClass, |
| final Class<? extends InputFormat> inputFormatClass, |
| final Class<? extends OutputFormat> outputFormatClass) { |
| super(ctxt, mapperClass, inputFormatClass, outputFormatClass); |
| } |
| |
| |
| @Override |
| protected void configureInputFormat(Job job, String tableName, |
| String tableClassName, String splitByCol) |
| throws ClassNotFoundException, IOException { |
| super.configureInputFormat(job, tableName, tableClassName, splitByCol); |
| ConnManager mgr = context.getConnManager(); |
| String username = options.getUsername(); |
| if (null == username || username.length() == 0) { |
| DBConfiguration.configureDB(job.getConfiguration(), |
| mgr.getDriverClass(), |
| options.getConnectString(), |
| options.getFetchSize(), |
| options.getConnectionParams()); |
| } else { |
| DBConfiguration.configureDB(job.getConfiguration(), |
| mgr.getDriverClass(), |
| options.getConnectString(), |
| username, options.getPassword(), |
| options.getFetchSize(), |
| options.getConnectionParams()); |
| } |
| } |
| |
| |
| @Override |
| protected Class<? extends Mapper> getMapperClass() { |
| return PGBulkloadExportMapper.class; |
| } |
| |
| |
| protected Class<? extends Reducer> getReducerClass() { |
| return PGBulkloadExportReducer.class; |
| } |
| |
| |
| private void setDelimiter(String prop, char val, Configuration conf) { |
| switch (val) { |
| case DelimiterSet.NULL_CHAR: |
| break; |
| case '\t': |
| default: |
| conf.set(prop, String.valueOf(val)); |
| } |
| } |
| |
| |
| @Override |
| protected void propagateOptionsToJob(Job job) { |
| super.propagateOptionsToJob(job); |
| SqoopOptions opts = context.getOptions(); |
| Configuration conf = job.getConfiguration(); |
| conf.setIfUnset("pgbulkload.bin", "pg_bulkload"); |
| if (opts.getNullStringValue() != null) { |
| conf.set("pgbulkload.null.string", opts.getNullStringValue()); |
| } |
| setDelimiter("pgbulkload.input.field.delim", |
| opts.getInputFieldDelim(), |
| conf); |
| setDelimiter("pgbulkload.input.record.delim", |
| opts.getInputRecordDelim(), |
| conf); |
| setDelimiter("pgbulkload.input.enclosedby", |
| opts.getInputEnclosedBy(), |
| conf); |
| setDelimiter("pgbulkload.input.escapedby", |
| opts.getInputEscapedBy(), |
| conf); |
| conf.setBoolean("pgbulkload.input.encloserequired", |
| opts.isInputEncloseRequired()); |
| conf.setIfUnset("pgbulkload.check.constraints", "YES"); |
| conf.setIfUnset("pgbulkload.parse.errors", "INFINITE"); |
| conf.setIfUnset("pgbulkload.duplicate.errors", "INFINITE"); |
| conf.set("mapred.jar", context.getJarFile()); |
| conf.setBoolean("mapred.map.tasks.speculative.execution", false); |
| conf.setBoolean("mapred.reduce.tasks.speculative.execution", false); |
| conf.setInt(HADOOP_MAP_TASK_MAX_ATTEMTPS, 1); |
| conf.setInt(HADOOP_REDUCE_TASK_MAX_ATTEMTPS, 1); |
| } |
| |
| |
| @Override |
| public void runExport() throws ExportException, IOException { |
| SqoopOptions options = context.getOptions(); |
| Configuration conf = options.getConf(); |
| DBConfiguration dbConf = null; |
| String outputTableName = context.getTableName(); |
| String tableName = outputTableName; |
| String tableClassName = |
| new TableClassName(options).getClassForTable(outputTableName); |
| |
| LOG.info("Beginning export of " + outputTableName); |
| loadJars(conf, context.getJarFile(), tableClassName); |
| |
| try { |
| Job job = new Job(conf); |
| dbConf = new DBConfiguration(job.getConfiguration()); |
| dbConf.setOutputTableName(tableName); |
| configureInputFormat(job, tableName, tableClassName, null); |
| configureOutputFormat(job, tableName, tableClassName); |
| configureNumTasks(job); |
| propagateOptionsToJob(job); |
| job.setMapperClass(getMapperClass()); |
| job.setMapOutputKeyClass(LongWritable.class); |
| job.setMapOutputValueClass(Text.class); |
| job.setReducerClass(getReducerClass()); |
| cacheJars(job, context.getConnManager()); |
| setJob(job); |
| |
| boolean success = runJob(job); |
| if (!success) { |
| throw new ExportException("Export job failed!"); |
| } |
| } catch (InterruptedException ie) { |
| throw new IOException(ie); |
| } catch (ClassNotFoundException cnfe) { |
| throw new IOException(cnfe); |
| } finally { |
| unloadJars(); |
| } |
| } |
| |
| |
| @Override |
| protected int configureNumReduceTasks(Job job) throws IOException { |
| if (job.getNumReduceTasks() < 1) { |
| job.setNumReduceTasks(1); |
| } |
| return job.getNumReduceTasks(); |
| } |
| |
| |
| private void clearStagingTable(DBConfiguration dbConf, String tableName) |
| throws IOException { |
| // clearing stagingtable is done each mapper tasks |
| } |
| } |