/**
* 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.ByteArrayOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Random;
import java.util.StringTokenizer;
import junit.framework.Assert;
import junit.framework.TestCase;
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.types.ParseException;
import org.apache.hadoop.zebra.types.Projection;
import org.apache.hadoop.zebra.types.Schema;
import org.apache.hadoop.zebra.types.TypesUtils;
import org.apache.pig.backend.executionengine.ExecException;
import org.apache.pig.data.DataBag;
import org.apache.pig.data.DataByteArray;
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 TestSchema {
// final static String STR_SCHEMA =
// "s1:bool, s2:int, s3:long, s4:float, s5:string, s6:bytes, r1:record(f1:int, f2:long), m1:map(string), c:collection(f13:double, f14:float, f15:bytes)";
// final static String STR_STORAGE =
// "[s1, s2]; [r1.f1]; [s3, s4]; [s5, s6]; [r1.f2]; [c.f13]";
private static Configuration conf;
private static Path path;
private static FileSystem fs;
@BeforeClass
public static void setUp() 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(), "TestSchema");
fs = path.getFileSystem(conf);
// drop any previous tables
BasicTable.drop(path, conf);
}
/**
* Return the name of the routine that called getCurrentMethodName
*
*/
public String getCurrentMethodName() {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
PrintWriter pw = new PrintWriter(baos);
(new Throwable()).printStackTrace(pw);
pw.flush();
String stackTrace = baos.toString();
pw.close();
StringTokenizer tok = new StringTokenizer(stackTrace, "\n");
tok.nextToken(); // 'java.lang.Throwable'
tok.nextToken(); // 'at ...getCurrentMethodName'
String l = tok.nextToken(); // 'at ...<caller to getCurrentRoutine>'
// Parse line 3
tok = new StringTokenizer(l.trim(), " <(");
String t = tok.nextToken(); // 'at'
t = tok.nextToken(); // '...<caller to getCurrentRoutine>'
return t;
}
@AfterClass
public static void tearDownOnce() throws IOException {
BasicTable.drop(path, conf);
}
@Test
public void testSimple() throws IOException, ParseException {
String STR_SCHEMA = "s1:bool, s2:int, s3:long, s4:float, s5:string, s6:bytes";
String STR_STORAGE = "[s1, s2]; [s3, s4]; [s5, s6]";
// Build Table and column groups
BasicTable.Writer writer = new BasicTable.Writer(path, STR_SCHEMA,
STR_STORAGE, false, 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);
// insert data in row 1
int row = 0;
tuple.set(0, true); // bool
tuple.set(1, 1); // int
tuple.set(2, 1001L); // long
tuple.set(3, 1.1); // float
tuple.set(4, "hello world 1"); // string
tuple.set(5, new DataByteArray("hello byte 1")); // byte
inserter.insert(new BytesWritable(String.format("k%d%d", part + 1, row + 1)
.getBytes()), tuple);
// insert data in row 2
row++;
tuple.set(0, false);
tuple.set(1, 2); // int
tuple.set(2, 1002L); // long
tuple.set(3, 3.1); // float
tuple.set(4, "hello world 2"); // string
tuple.set(5, new DataByteArray("hello byte 2")); // byte
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();
// Starting read
String projection = new String("s6,s5,s4,s3,s2,s1");
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(true, RowValue.get(5));
Assert.assertEquals(1, RowValue.get(4));
Assert.assertEquals(1.1, RowValue.get(2));
Assert.assertEquals("hello world 1", RowValue.get(1));
scanner.advance();
scanner.getKey(key);
Assert.assertEquals(key, new BytesWritable("k12".getBytes()));
scanner.getValue(RowValue);
Assert.assertEquals(false, RowValue.get(5));
Assert.assertEquals(2, RowValue.get(4));
Assert.assertEquals(3.1, RowValue.get(2));
Assert.assertEquals("hello world 2", RowValue.get(1));
// test stitch, I can re_use reader, split, but NOT scanner
String projection2 = new String("s5, s1");
reader.setProjection(projection2);
scanner = reader.getScanner(splits.get(0), true);
RowValue = TypesUtils.createTuple(scanner.getSchema());
scanner.getKey(key);
Assert.assertEquals(key, new BytesWritable("k11".getBytes()));
scanner.getValue(RowValue);
Assert.assertEquals("hello world 1", RowValue.get(0));
Assert.assertEquals(true, RowValue.get(1));
scanner.advance();
scanner.getKey(key);
Assert.assertEquals(key, new BytesWritable("k12".getBytes()));
scanner.getValue(RowValue);
Assert.assertEquals("hello world 2", RowValue.get(0));
Assert.assertEquals(false, RowValue.get(1));
reader.close();
}
@Test
public void testRedord() throws IOException, ParseException {
BasicTable.drop(path, conf);
String STR_SCHEMA = "r1:record(f1:int, f2:long), r2:record(r3:record(f3:float, f4))";
String STR_STORAGE = "[r1.f1]; [r2.r3.f4]; [r1.f2, r2.r3.f3]";
path = new Path(getCurrentMethodName());
// in case BasicTable exists
BasicTable.drop(path, conf);
System.out.println("in testRecord, get path: " + path.toString());
// Build Table and column groups
BasicTable.Writer writer = new BasicTable.Writer(path, STR_SCHEMA,
STR_STORAGE, false, 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);
Tuple tupRecord1;
try {
tupRecord1 = TypesUtils.createTuple(schema.getColumnSchema("r1")
.getSchema());
} catch (ParseException e) {
e.printStackTrace();
throw new IOException(e);
}
Tuple tupRecord2;
try {
tupRecord2 = TypesUtils.createTuple(schema.getColumnSchema("r2")
.getSchema());
} catch (ParseException e) {
e.printStackTrace();
throw new IOException(e);
}
Tuple tupRecord3;
try {
tupRecord3 = TypesUtils.createTuple(new Schema("f3:float, f4"));
} catch (ParseException e) {
e.printStackTrace();
throw new IOException(e);
}
// insert data in row 1
int row = 0;
// r1:record(f1:int, f2:long
tupRecord1.set(0, 1);
tupRecord1.set(1, 1001L);
tuple.set(0, tupRecord1);
// r2:record(r3:record(f3:float, f4))
tupRecord2.set(0, tupRecord3);
tupRecord3.set(0, 1.3);
tupRecord3.set(1, new DataByteArray("r3 row1 byte array"));
tuple.set(1, tupRecord2);
inserter.insert(new BytesWritable(String.format("k%d%d", part + 1, row + 1)
.getBytes()), tuple);
// row 2
row++;
TypesUtils.resetTuple(tuple);
TypesUtils.resetTuple(tupRecord1);
TypesUtils.resetTuple(tupRecord2);
TypesUtils.resetTuple(tupRecord3);
// r1:record(f1:int, f2:long
tupRecord1.set(0, 2);
tupRecord1.set(1, 1002L);
tuple.set(0, tupRecord1);
// r2:record(r3:record(f3:float, f4))
tupRecord2.set(0, tupRecord3);
tupRecord3.set(0, 2.3);
tupRecord3.set(1, new DataByteArray("r3 row2 byte array"));
tuple.set(1, tupRecord2);
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();
// Starting read , simple projection 0, not record of record level. PASS
String projection0 = new String("r1.f1, r1.f2");
BasicTable.Reader reader = new BasicTable.Reader(path, conf);
reader.setProjection(projection0);
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(1, RowValue.get(0));
scanner.advance();
scanner.getKey(key);
Assert.assertEquals(key, new BytesWritable("k12".getBytes()));
scanner.getValue(RowValue);
Assert.assertEquals(2, RowValue.get(0));
/*
* String STR_SCHEMA =
* "r1:record(f1:int, f2:long), r2:record(r3:record(f3:float, f4))"; String
* STR_STORAGE = "[r1.f1]; [r2.r3.f4]; [r1.f2, r2.r3.f3]";
*/
// Starting read , simple projection 1 , record of record level, FIXED,
// PASS on advance
String projection1 = new String("r2.r3.f4, r2.r3.f3");
reader.setProjection(projection1);
scanner = reader.getScanner(splits.get(0), true);
RowValue = TypesUtils.createTuple(scanner.getSchema());
scanner.getKey(key);
Assert.assertEquals(key, new BytesWritable("k11".getBytes()));
scanner.getValue(RowValue);
Assert.assertEquals("r3 row1 byte array", RowValue.get(0).toString());
Assert.assertEquals(1.3, RowValue.get(1));
scanner.advance();
scanner.getKey(key);
Assert.assertEquals(key, new BytesWritable("k12".getBytes()));
scanner.getValue(RowValue);
Assert.assertEquals("r3 row2 byte array", RowValue.get(0).toString());
Assert.assertEquals(2.3, RowValue.get(1));
/*
* String STR_SCHEMA =
* "r1:record(f1:int, f2:long), r2:record(r3:record(f3:float, f4))"; String
* STR_STORAGE = "[r1.f1]; [r2.r3.f4]; [r1.f2, r2.r3.f3]";
*/
// test stitch, [r1.f1]; [r2.r3.f4]; [r1.f2, r2.r3.f3]
String projection2 = new String("r1.f1, r2.r3.f3");
reader.setProjection(projection2);
scanner = reader.getScanner(splits.get(0), true);
RowValue = TypesUtils.createTuple(scanner.getSchema());
scanner.getKey(key);
Assert.assertEquals(key, new BytesWritable("k11".getBytes()));
scanner.getValue(RowValue);
Assert.assertEquals(1, RowValue.get(0));
Assert.assertEquals(1.3, RowValue.get(1));
scanner.advance();
scanner.getKey(key);
Assert.assertEquals(key, new BytesWritable("k12".getBytes()));
scanner.getValue(RowValue);
Assert.assertEquals(2, RowValue.get(0));
Assert.assertEquals(2.3, RowValue.get(1));
/*
* String STR_SCHEMA =
* "r1:record(f1:int, f2:long), r2:record(r3:record(f3:float, f4))"; String
* STR_STORAGE = "[r1.f1]; [r2.r3.f4]; [r1.f2, r2.r3.f3]";
*/
// test stitch, [r1.f1]; [r2.r3.f4]; [r1.f2, r2.r3.f3]
String projection3 = new String("r1, r2");
reader.setProjection(projection3);
scanner = reader.getScanner(splits.get(0), true);
RowValue = TypesUtils.createTuple(scanner.getSchema());
scanner.getKey(key);
Assert.assertEquals(key, new BytesWritable("k11".getBytes()));
scanner.getValue(RowValue);
Assert.assertEquals(1, ((Tuple) RowValue.get(0)).get(0));
Assert.assertEquals(1001L, ((Tuple) RowValue.get(0)).get(1));
Assert.assertEquals("((1.3,r3 row1 byte array))", RowValue.get(1)
.toString());
Assert.assertEquals(1.3, ((Tuple) ((Tuple) RowValue.get(1)).get(0)).get(0));
Assert.assertEquals("r3 row1 byte array",
((Tuple) ((Tuple) RowValue.get(1)).get(0)).get(1).toString());
scanner.advance();
scanner.getKey(key);
Assert.assertEquals(key, new BytesWritable("k12".getBytes()));
scanner.getValue(RowValue);
Assert.assertEquals(2, ((Tuple) RowValue.get(0)).get(0));
Assert.assertEquals(1002L, ((Tuple) RowValue.get(0)).get(1));
Assert.assertEquals("((2.3,r3 row2 byte array))", RowValue.get(1)
.toString());
Assert.assertEquals(2.3, ((Tuple) ((Tuple) RowValue.get(1)).get(0)).get(0));
Assert.assertEquals("r3 row2 byte array",
((Tuple) ((Tuple) RowValue.get(1)).get(0)).get(1).toString());
// test projection, negative, none-exist column name. FAILED, It crashes
// here
String projection4 = new String("r3");
reader.setProjection(projection4);
scanner = reader.getScanner(splits.get(0), true);
RowValue = TypesUtils.createTuple(scanner.getSchema());
scanner.getKey(key);
Assert.assertEquals(key, new BytesWritable("k11".getBytes()));
// scanner.getValue(RowValue); //FAILED, It crashes here
reader.close();
}
@Test
public void testMap() throws IOException, ParseException {
String STR_SCHEMA = "m1:map(string),m2:map(map(int))";
String STR_STORAGE = "[m1#{a}];[m2#{x|y}]; [m1#{b}, m2#{z}]";
// String STR_SCHEMA = "m1:map(string)";
// String STR_STORAGE = "[m1#{a}]";
// Build Table and column groups
path = new Path(getCurrentMethodName());
BasicTable.Writer writer = new BasicTable.Writer(path, STR_SCHEMA,
STR_STORAGE, false, 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);
// 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();
// Starting read Simple read one map PASS
String projection = new String("m1#{a}");
BasicTable.Reader reader = new BasicTable.Reader(path, conf);
reader.setProjection(projection);
List<RangeSplit> splits = reader.rangeSplit(1);
reader.close();
reader = new BasicTable.Reader(path, conf);
reader.setProjection(projection);
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("{a=A}", RowValue.get(0).toString());
// If row 1 has a==>A, and row 2 doesn't have key a, scanner advance
// will still return a==>A
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());
// m1:map(string),m2:map(map(int))";
// String STR_STORAGE = "[m1#{a}];[m2#{x|y}]; [m1#{b}, m2#{z}]";
// test stitch, I can re_use reader, split, but NOT scanner
String projection2 = new String("m1#{b}, m2#{x|z}");
reader.setProjection(projection2);
scanner = reader.getScanner(splits.get(0), true);
RowValue = TypesUtils.createTuple(scanner.getSchema());
scanner.getKey(key);
Assert.assertEquals(key, new BytesWritable("k11".getBytes()));
scanner.getValue(RowValue);
// TODO Assert.assertEquals("{a=A}", RowValue.get(0).toString());
Assert.assertEquals("B", ((Map) RowValue.get(0)).get("b"));
Assert.assertEquals(321, ((Map) ((Map) RowValue.get(1)).get("x"))
.get("m321"));
Assert.assertEquals(null, ((Map) ((Map) RowValue.get(1)).get("z")));
// m2's x key:
/*
* m3.put("m311", 311); m3.put("m321", 321); m3.put("m331", 331);
*/
System.out.println(RowValue.get(1).toString());
TypesUtils.resetTuple(RowValue);
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"));
reader.close();
}
}