/**
* 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.pig;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
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.Path;
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.pig.TableStorer;
import org.apache.hadoop.zebra.schema.Schema;
import org.apache.hadoop.zebra.types.TypesUtils;
import org.apache.pig.ExecType;
import org.apache.pig.PigServer;
import org.apache.pig.backend.executionengine.ExecException;
import org.apache.pig.backend.hadoop.datastorage.ConfigurationUtil;
import org.apache.pig.data.Tuple;
import org.apache.pig.test.MiniCluster;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.apache.hadoop.zebra.BaseTestCase;
/**
* Note:
*
* Make sure you add the build/pig-0.1.0-dev-core.jar to the Classpath of the
* app/debug configuration, when run this from inside the Eclipse.
*
*/
public class TestSortedTableUnionSourceTableProj extends BaseTestCase{
private static Path pathTable;
@BeforeClass
public static void setUp() throws Exception {
init();
pathTable = getTableFullPath("TestBasicTableUnionLoader1");
removeDir(pathTable);
BasicTable.Writer writer = new BasicTable.Writer(pathTable,
"SF_a:string,SF_b:string,SF_c:string,SF_d:string,SF_e:string,SF_f:string,SF_g:string",
"[SF_a, SF_b, SF_c]; [SF_e, SF_f, SF_g]", conf);
Schema schema = writer.getSchema();
Tuple tuple = TypesUtils.createTuple(schema);
final int numsBatch = 10;
final int numsInserters = 1;
TableInserter[] inserters = new TableInserter[numsInserters];
for (int i = 0; i < numsInserters; i++) {
inserters[i] = writer.getInserter("ins" + i, false);
}
for (int b = 0; b < numsBatch; b++) {
for (int i = 0; i < numsInserters; i++) {
TypesUtils.resetTuple(tuple);
for (int k = 0; k < tuple.size(); ++k) {
try {
tuple.set(k, (9-b) + "_" + i + "" + k);
} catch (ExecException e) {
e.printStackTrace();
}
}
inserters[i].insert(new BytesWritable(("key" + i).getBytes()), tuple);
}
}
for (int i = 0; i < numsInserters; i++) {
inserters[i].close();
}
writer.close();
}
@AfterClass
public static void tearDown() throws Exception {
pigServer.shutdown();
}
/**
* 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;
}
@Test
public void testStorer() throws ExecException, IOException {
/*
* Use pig LOAD to load testing data for store
*/
String query = "records = LOAD '" + pathTable.toString()
+ "' USING org.apache.hadoop.zebra.pig.TableLoader();";
pigServer.registerQuery(query);
/*
Iterator<Tuple> it2 = pigServer.openIterator("records");
int row0 = 0;
Tuple RowValue2 = null;
while (it2.hasNext()) {
// Last row value
RowValue2 = it2.next();
row0++;
if (row0 == 10) {
Assert.assertEquals("0_01", RowValue2.get(1));
Assert.assertEquals("0_00", RowValue2.get(0));
}
}
Assert.assertEquals(10, row0);
*/
String orderby = "srecs = ORDER records BY SF_a;";
pigServer.registerQuery(orderby);
/*
* Use pig STORE to store testing data BasicTable.Writer writer = new
* BasicTable.Writer(pathTable, "SF_a,SF_b,SF_c,SF_d,SF_e,SF_f,SF_g",
* "[SF_a, SF_b, SF_c]; [SF_e, SF_f, SF_g]", false, conf);
*/
Path newPath = new Path(getCurrentMethodName());
/*
* Table1 creation
*/
removeDir(getTableFullPath(newPath.toString()+"1"));
pigServer
.store(
"srecs",
newPath.toString()+"1",
TableStorer.class.getCanonicalName()
+ "('[SF_a, SF_b, SF_c]; [SF_e]')");
removeDir(getTableFullPath(newPath.toString()+"2"));
pigServer
.store(
"srecs",
newPath.toString()+"2",
TableStorer.class.getCanonicalName()
+ "('[SF_a, SF_b, SF_c]; [SF_e]')");
String query4 = "records2 = LOAD '"
+ newPath.toString() + "1,"
+ newPath.toString() + "2"
+ "' USING org.apache.hadoop.zebra.pig.TableLoader('SF_a, SF_b, source_table', 'sorted');";
pigServer.registerQuery(query4);
String foreach2 = "foreachsort2 = FOREACH records2 GENERATE SF_a, $2;";
pigServer.registerQuery(foreach2);
// check JOIN content
Iterator<Tuple> it4 = pigServer.openIterator("foreachsort2");
int row = 0, index;
Tuple RowValue3 = null;
while (it4.hasNext()) {
// Last row value
RowValue3 = it4.next();
Assert.assertEquals(2, RowValue3.size());
row++;
if (row < 11)
index = row-1;
else
index = row-11;
Assert.assertEquals(index+"_00", RowValue3.get(0));
}
Assert.assertEquals(20, row);
}
}