com.linkedin.pinot.core.segment.index.loader.LoaderUtilsTest.java Source code

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Here is the source code for com.linkedin.pinot.core.segment.index.loader.LoaderUtilsTest.java

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/**
 * 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);
    }
}