/*
* 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.hbase.spark.example.hbasecontext;
import java.util.ArrayList;
import java.util.List;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.spark.JavaHBaseContext;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.spark.SparkConf;
import org.apache.spark.api.java.JavaRDD;
import org.apache.spark.api.java.JavaSparkContext;
import org.apache.spark.api.java.function.Function;
/**
* This is a simple example of putting records in HBase
* with the bulkPut function.
*/
final public class JavaHBaseBulkPutExample {
private JavaHBaseBulkPutExample() {}
public static void main(String[] args) {
if (args.length < 2) {
System.out.println("JavaHBaseBulkPutExample " +
"{tableName} {columnFamily}");
return;
}
String tableName = args[0];
String columnFamily = args[1];
SparkConf sparkConf = new SparkConf().setAppName("JavaHBaseBulkPutExample " + tableName);
JavaSparkContext jsc = new JavaSparkContext(sparkConf);
try {
List<String> list = new ArrayList<>(5);
list.add("1," + columnFamily + ",a,1");
list.add("2," + columnFamily + ",a,2");
list.add("3," + columnFamily + ",a,3");
list.add("4," + columnFamily + ",a,4");
list.add("5," + columnFamily + ",a,5");
JavaRDD<String> rdd = jsc.parallelize(list);
Configuration conf = HBaseConfiguration.create();
JavaHBaseContext hbaseContext = new JavaHBaseContext(jsc, conf);
hbaseContext.bulkPut(rdd,
TableName.valueOf(tableName),
new PutFunction());
} finally {
jsc.stop();
}
}
public static class PutFunction implements Function<String, Put> {
private static final long serialVersionUID = 1L;
public Put call(String v) throws Exception {
String[] cells = v.split(",");
Put put = new Put(Bytes.toBytes(cells[0]));
put.addColumn(Bytes.toBytes(cells[1]), Bytes.toBytes(cells[2]),
Bytes.toBytes(cells[3]));
return put;
}
}
}