/**
* Copyright (C) 2014-2016 LinkedIn Corp. (pinot-core@linkedin.com)
*
* 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 com.linkedin.pinot.core.segment.index.loader;
import com.linkedin.pinot.common.utils.CommonConstants;
import java.io.File;
import java.io.IOException;
import org.apache.commons.io.FileUtils;
import org.testng.Assert;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
public class LoaderUtilsTest {
private static final File TEST_DIR = new File("tmp", LoaderUtils.class.getName());
@BeforeClass
public void setUp()
throws IOException {
FileUtils.deleteDirectory(TEST_DIR);
Assert.assertTrue(TEST_DIR.mkdirs());
}
@Test
public void testReloadFailureRecovery()
throws IOException {
String segmentName = "dummySegment";
String indexFileName = "dummyIndex";
File indexDir = new File(TEST_DIR, segmentName);
File segmentBackupDir = new File(TEST_DIR, segmentName + CommonConstants.Segment.SEGMENT_BACKUP_DIR_SUFFIX);
File segmentTempDir = new File(TEST_DIR, segmentName + CommonConstants.Segment.SEGMENT_TEMP_DIR_SUFFIX);
// Only index directory exists (normal case, or failed before the first renaming)
Assert.assertTrue(indexDir.mkdir());
FileUtils.touch(new File(indexDir, indexFileName));
LoaderUtils.reloadFailureRecovery(indexDir);
Assert.assertTrue(indexDir.exists());
Assert.assertTrue(new File(indexDir, indexFileName).exists());
Assert.assertFalse(segmentBackupDir.exists());
Assert.assertFalse(segmentTempDir.exists());
FileUtils.deleteDirectory(indexDir);
// Only segment backup directory exists (failed after the first renaming but before copying happened)
Assert.assertTrue(segmentBackupDir.mkdir());
FileUtils.touch(new File(segmentBackupDir, indexFileName));
LoaderUtils.reloadFailureRecovery(indexDir);
Assert.assertTrue(indexDir.exists());
Assert.assertTrue(new File(indexDir, indexFileName).exists());
Assert.assertFalse(segmentBackupDir.exists());
Assert.assertFalse(segmentTempDir.exists());
FileUtils.deleteDirectory(indexDir);
// Index directory and segment backup directory exist (failed before second renaming)
Assert.assertTrue(indexDir.mkdir());
Assert.assertTrue(segmentBackupDir.mkdir());
FileUtils.touch(new File(segmentBackupDir, indexFileName));
LoaderUtils.reloadFailureRecovery(indexDir);
Assert.assertTrue(indexDir.exists());
Assert.assertTrue(new File(indexDir, indexFileName).exists());
Assert.assertFalse(segmentBackupDir.exists());
Assert.assertFalse(segmentTempDir.exists());
FileUtils.deleteDirectory(indexDir);
// Index directory and segment temporary directory exist (failed after second renaming)
Assert.assertTrue(indexDir.mkdir());
FileUtils.touch(new File(indexDir, indexFileName));
Assert.assertTrue(segmentTempDir.mkdir());
LoaderUtils.reloadFailureRecovery(indexDir);
Assert.assertTrue(indexDir.exists());
Assert.assertTrue(new File(indexDir, indexFileName).exists());
Assert.assertFalse(segmentBackupDir.exists());
Assert.assertFalse(segmentTempDir.exists());
FileUtils.deleteDirectory(indexDir);
}
@AfterClass
public void tearDown()
throws IOException {
FileUtils.deleteDirectory(TEST_DIR);
}
}