/**
* 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.zebra.io;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import junit.framework.Assert;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.LocalFileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.RawLocalFileSystem;
import org.apache.hadoop.io.BytesWritable;
import org.apache.hadoop.zebra.io.BasicTable;
import org.apache.hadoop.zebra.io.TableInserter;
import org.apache.hadoop.zebra.io.TableScanner;
import org.apache.hadoop.zebra.io.BasicTable.Reader.RangeSplit;
import org.apache.hadoop.zebra.parser.ParseException;
import org.apache.hadoop.zebra.schema.Schema;
import org.apache.hadoop.zebra.types.TypesUtils;
import org.apache.pig.data.Tuple;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
/**
*
* Test projections on complicated column types.
*
*/
public class TestNonDefaultWholeMapSplit {
final static String STR_SCHEMA = "m1:map(string),m2:map(map(int))";
//the comment STR_STORAGE is the one for jira 949
final static String STR_STORAGE = "[m1#{a}];[m2#{x|y}]; [m1#{b}, m2#{z}];[m1]";
private static Configuration conf;
private static Path path;
private static FileSystem fs;
@BeforeClass
public static void setUpOnce() throws IOException {
conf = new Configuration();
conf.setInt("table.output.tfile.minBlock.size", 64 * 1024);
conf.setInt("table.input.split.minSize", 64 * 1024);
conf.set("table.output.tfile.compression", "none");
RawLocalFileSystem rawLFS = new RawLocalFileSystem();
fs = new LocalFileSystem(rawLFS);
path = new Path(fs.getWorkingDirectory(), "TestMap");
fs = path.getFileSystem(conf);
// drop any previous tables
BasicTable.drop(path, conf);
BasicTable.Writer writer = new BasicTable.Writer(path, STR_SCHEMA,
STR_STORAGE, conf);
writer.finish();
Schema schema = writer.getSchema();
Tuple tuple = TypesUtils.createTuple(schema);
BasicTable.Writer writer1 = new BasicTable.Writer(path, conf);
int part = 0;
TableInserter inserter = writer1.getInserter("part" + part, true);
TypesUtils.resetTuple(tuple);
// add data to row 1
// m1:map(string)
Map<String, String> m1 = new HashMap<String, String>();
m1.put("a", "A");
m1.put("b", "B");
m1.put("c", "C");
tuple.set(0, m1);
// m2:map(map(int))
HashMap<String, Map> m2 = new HashMap<String, Map>();
Map<String, Integer> m3 = new HashMap<String, Integer>();
m3.put("m311", 311);
m3.put("m321", 321);
m3.put("m331", 331);
Map<String, Integer> m4 = new HashMap<String, Integer>();
m4.put("m411", 411);
m4.put("m421", 421);
m4.put("m431", 431);
m2.put("x", m3);
m2.put("y", m4);
tuple.set(1, m2);
int row = 0;
inserter.insert(new BytesWritable(String.format("k%d%d", part + 1, row + 1)
.getBytes()), tuple);
// row 2
row++;
TypesUtils.resetTuple(tuple);
m1.clear();
m2.clear();
m3.clear();
m4.clear();
// m1:map(string)
m1.put("a", "A2");
m1.put("b2", "B2");
m1.put("c2", "C2");
tuple.set(0, m1);
// m2:map(map(int))
m3.put("m321", 321);
m3.put("m322", 322);
m3.put("m323", 323);
m2.put("z", m3);
tuple.set(1, m2);
inserter.insert(new BytesWritable(String.format("k%d%d", part + 1, row + 1)
.getBytes()), tuple);
// finish building table, closing out the inserter, writer, writer1
inserter.close();
writer1.finish();
writer.close();
}
@AfterClass
public static void tearDownOnce() throws IOException {
BasicTable.drop(path, conf);
}
@Test
public void testRead1() throws IOException, ParseException {
/*
* read one map
*/
String projection = new String("m1#{a}");
BasicTable.Reader reader = new BasicTable.Reader(path, conf);
reader.setProjection(projection);
List<RangeSplit> splits = reader.rangeSplit(1);
TableScanner scanner = reader.getScanner(splits.get(0), true);
BytesWritable key = new BytesWritable();
Tuple RowValue = TypesUtils.createTuple(scanner.getSchema());
scanner.getKey(key);
Assert.assertEquals(key, new BytesWritable("k11".getBytes()));
scanner.getValue(RowValue);
System.out.println("read1 : " + RowValue.toString());
Assert.assertEquals("{a=A}", RowValue.get(0).toString());
scanner.advance();
scanner.getKey(key);
Assert.assertEquals(key, new BytesWritable("k12".getBytes()));
scanner.getValue(RowValue);
System.out.println(RowValue.get(0).toString());
Assert.assertEquals("{a=A2}", RowValue.get(0).toString());
reader.close();
}
@Test
public void testRead2() throws IOException, ParseException {
/*
* read map of map, stitch
*/
String projection2 = new String("m1#{b}, m2#{x|z}");
BasicTable.Reader reader = new BasicTable.Reader(path, conf);
reader.setProjection(projection2);
List<RangeSplit> splits = reader.rangeSplit(1);
TableScanner scanner = reader.getScanner(splits.get(0), true);
BytesWritable key = new BytesWritable();
Tuple RowValue = TypesUtils.createTuple(scanner.getSchema());
scanner.getKey(key);
Assert.assertEquals(key, new BytesWritable("k11".getBytes()));
scanner.getValue(RowValue);
System.out.println("map of map: " + RowValue.toString());
// map of map: ([b#B],[z#,x#{m311=311, m321=321, m331=331}])
Assert.assertEquals("B", ((Map) RowValue.get(0)).get("b"));
Assert.assertEquals(321, ((Map) ((Map) RowValue.get(1)).get("x"))
.get("m321"));
Assert.assertEquals(311, ((Map) ((Map) RowValue.get(1)).get("x"))
.get("m311"));
Assert.assertEquals(331, ((Map) ((Map) RowValue.get(1)).get("x"))
.get("m331"));
Assert.assertEquals(null, ((Map) ((Map) RowValue.get(1)).get("x"))
.get("m341"));
Assert.assertEquals(null, ((Map) ((Map) RowValue.get(1)).get("z")));
Assert.assertEquals(null, ((Map) ((Map) RowValue.get(0)).get("a")));
Assert.assertEquals(null, ((Map) ((Map) RowValue.get(0)).get("c")));
System.out.println("rowValue.get)1): " + RowValue.get(1).toString());
// rowValue.get)1): {z=null, x={m311=311, m321=321, m331=331}}
scanner.advance();
scanner.getKey(key);
Assert.assertEquals(key, new BytesWritable("k12".getBytes()));
scanner.getValue(RowValue);
Assert.assertEquals(null, ((Map) RowValue.get(0)).get("b"));
Assert.assertEquals(null, ((Map) ((Map) RowValue.get(1)).get("x")));
Assert.assertEquals(323, ((Map) ((Map) RowValue.get(1)).get("z"))
.get("m323"));
Assert.assertEquals(322, ((Map) ((Map) RowValue.get(1)).get("z"))
.get("m322"));
Assert.assertEquals(321, ((Map) ((Map) RowValue.get(1)).get("z"))
.get("m321"));
Assert.assertEquals(null, ((Map) ((Map) RowValue.get(0)).get("a")));
Assert.assertEquals(null, ((Map) ((Map) RowValue.get(0)).get("b")));
Assert.assertEquals(null, ((Map) ((Map) RowValue.get(1)).get("a")));
reader.close();
}
@Test
public void testRead3() throws IOException, ParseException {
/*
* negative , read one map who is non-exist
*/
String projection = new String("m5");
BasicTable.Reader reader = new BasicTable.Reader(path, conf);
reader.setProjection(projection);
List<RangeSplit> splits = reader.rangeSplit(1);
TableScanner scanner = reader.getScanner(splits.get(0), true);
BytesWritable key = new BytesWritable();
Tuple RowValue = TypesUtils.createTuple(scanner.getSchema());
scanner.getKey(key);
Assert.assertEquals(key, new BytesWritable("k11".getBytes()));
scanner.getValue(RowValue);
Assert.assertEquals(null, RowValue.get(0));
Assert.assertEquals(1, RowValue.size());
scanner.advance();
scanner.getKey(key);
Assert.assertEquals(key, new BytesWritable("k12".getBytes()));
scanner.getValue(RowValue);
Assert.assertEquals(null, RowValue.get(0));
Assert.assertEquals(1, RowValue.size());
reader.close();
}
@Test
public void testRead4() throws IOException, ParseException {
/*
* Not exist key for all rows
*/
String projection = new String("m1#{nonexist}");
BasicTable.Reader reader = new BasicTable.Reader(path, conf);
reader.setProjection(projection);
List<RangeSplit> splits = reader.rangeSplit(1);
TableScanner scanner = reader.getScanner(splits.get(0), true);
BytesWritable key = new BytesWritable();
Tuple RowValue = TypesUtils.createTuple(scanner.getSchema());
scanner.getKey(key);
Assert.assertEquals(key, new BytesWritable("k11".getBytes()));
scanner.getValue(RowValue);
System.out.println("read1 : " + RowValue.toString());
Assert.assertEquals("{}", RowValue.get(0).toString());
scanner.advance();
scanner.getKey(key);
Assert.assertEquals(key, new BytesWritable("k12".getBytes()));
scanner.getValue(RowValue);
System.out.println(RowValue.get(0).toString());
Assert.assertEquals("{}", RowValue.get(0).toString());
reader.close();
}
}