/*
*
* Licensed 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.hive.storage.jdbc;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.notNullValue;
import static org.junit.Assert.assertThat;
import static org.mockito.Matchers.any;
import static org.mockito.Mockito.when;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.mapred.InputSplit;
import org.apache.hadoop.mapred.JobConf;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.runners.MockitoJUnitRunner;
import org.apache.hive.storage.jdbc.dao.DatabaseAccessor;
import org.apache.hive.storage.jdbc.exception.HiveJdbcDatabaseAccessException;
import java.io.IOException;
@RunWith(MockitoJUnitRunner.class)
public class JdbcInputFormatTest {
@Mock
private DatabaseAccessor mockDatabaseAccessor;
@Test
public void testSplitLogic_noSpillOver() throws HiveJdbcDatabaseAccessException, IOException {
JdbcInputFormat f = new JdbcInputFormat();
when(mockDatabaseAccessor.getTotalNumberOfRecords(any(Configuration.class))).thenReturn(15);
f.setDbAccessor(mockDatabaseAccessor);
JobConf conf = new JobConf();
conf.set("mapred.input.dir", "/temp");
InputSplit[] splits = f.getSplits(conf, 3);
assertThat(splits, is(notNullValue()));
assertThat(splits.length, is(3));
assertThat(splits[0].getLength(), is(5L));
}
@Test
public void testSplitLogic_withSpillOver() throws HiveJdbcDatabaseAccessException, IOException {
JdbcInputFormat f = new JdbcInputFormat();
when(mockDatabaseAccessor.getTotalNumberOfRecords(any(Configuration.class))).thenReturn(15);
f.setDbAccessor(mockDatabaseAccessor);
JobConf conf = new JobConf();
conf.set("mapred.input.dir", "/temp");
InputSplit[] splits = f.getSplits(conf, 6);
assertThat(splits, is(notNullValue()));
assertThat(splits.length, is(6));
for (int i = 0; i < 3; i++) {
assertThat(splits[i].getLength(), is(3L));
}
for (int i = 3; i < 6; i++) {
assertThat(splits[i].getLength(), is(2L));
}
}
}