/**
* 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.tajo.storage.v2;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.tajo.catalog.CatalogUtil;
import org.apache.tajo.catalog.Schema;
import org.apache.tajo.catalog.TableMeta;
import org.apache.tajo.catalog.proto.CatalogProtos;
import org.apache.tajo.common.TajoDataTypes;
import org.apache.tajo.conf.TajoConf;
import org.apache.tajo.datum.Datum;
import org.apache.tajo.datum.DatumFactory;
import org.apache.tajo.storage.*;
import org.apache.tajo.util.CommonTestingUtil;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import java.io.IOException;
import static org.apache.tajo.conf.TajoConf.ConfVars;
import static org.junit.Assert.assertEquals;
public class TestCSVScanner {
private TajoConf conf;
private static String TEST_PATH = "target/test-data/v2/TestCSVScanner";
AbstractStorageManager sm = null;
private Path testDir;
private FileSystem fs;
@Before
public void setUp() throws Exception {
conf = new TajoConf();
conf.setBoolVar(ConfVars.STORAGE_MANAGER_VERSION_2, true);
testDir = CommonTestingUtil.getTestDir(TEST_PATH);
fs = testDir.getFileSystem(conf);
sm = StorageManagerFactory.getStorageManager(conf, testDir);
}
@After
public void tearDown() throws Exception {
}
@Test
public final void testGetScannerAndAppender() throws IOException {
Schema schema = new Schema();
schema.addColumn("id", TajoDataTypes.Type.INT4);
schema.addColumn("age", TajoDataTypes.Type.INT4);
schema.addColumn("name", TajoDataTypes.Type.TEXT);
TableMeta meta = CatalogUtil.newTableMeta(schema, CatalogProtos.StoreType.CSV);
Tuple[] tuples = new Tuple[4];
for(int i=0; i < tuples.length; i++) {
tuples[i] = new VTuple(3);
tuples[i].put(new Datum[] {
DatumFactory.createInt4(i),
DatumFactory.createInt4(i + 32),
DatumFactory.createText("name" + i)});
}
Path path = StorageUtil.concatPath(testDir, "testGetScannerAndAppender", "table.csv");
fs.mkdirs(path.getParent());
Appender appender = StorageManagerFactory.getStorageManager(conf).getAppender(meta, path);
appender.init();
for(Tuple t : tuples) {
appender.addTuple(t);
}
appender.close();
Scanner scanner = StorageManagerFactory.getStorageManager(conf).getScanner(meta, path);
scanner.init();
int i=0;
Tuple tuple = null;
while( (tuple = scanner.next()) != null) {
i++;
}
assertEquals(4,i);
}
@Test
public final void testPartitionFile() throws IOException {
Schema schema = new Schema();
schema.addColumn("key", TajoDataTypes.Type.TEXT);
schema.addColumn("age", TajoDataTypes.Type.INT4);
schema.addColumn("name", TajoDataTypes.Type.TEXT);
TableMeta meta = CatalogUtil.newTableMeta(schema, CatalogProtos.StoreType.CSV);
Path path = StorageUtil.concatPath(testDir, "testPartitionFile", "table.csv");
fs.mkdirs(path.getParent());
Appender appender = StorageManagerFactory.getStorageManager(conf).getAppender(meta, path);
appender.init();
String keyValue = "";
for(int i = 0; i < 100; i++) {
keyValue += "0123456789";
}
keyValue = "key_" + keyValue + "_";
String nameValue = "";
for(int i = 0; i < 100; i++) {
nameValue += "0123456789";
}
nameValue = "name_" + nameValue + "_";
int numTuples = 100000;
for(int i = 0; i < numTuples; i++) {
Tuple tuple = new VTuple(3);
tuple.put(new Datum[] {
DatumFactory.createText(keyValue + i),
DatumFactory.createInt4(i + 32),
DatumFactory.createText(nameValue + i)});
appender.addTuple(tuple);
}
appender.close();
long fileLength = fs.getLength(path);
long totalTupleCount = 0;
int scanCount = 0;
Tuple startTuple = null;
Tuple lastTuple = null;
while(true) {
long startOffset = (64 * 1024 * 1024) * scanCount;
long length = Math.min(64 * 1024 * 1024, fileLength - startOffset);
Fragment fragment = new Fragment("Test", path, meta, startOffset, length, null, null);
Scanner scanner = StorageManagerFactory.getStorageManager(conf).getScanner(meta, fragment, schema);
scanner.init();
Tuple tuple = null;
while( (tuple = scanner.next()) != null) {
if(startTuple == null) {
startTuple = tuple;
}
lastTuple = tuple;
totalTupleCount++;
}
scanCount++;
if(length < 64 * 1024 * 1024) {
break;
}
}
assertEquals(numTuples, totalTupleCount);
assertEquals(keyValue + 0, startTuple.get(0).toString());
assertEquals(keyValue + (numTuples - 1), lastTuple.get(0).toString());
}
}