com.linkedin.pinot.core.indexsegment.utils.MmapMemoryManagerFileCleanupTest.java Source code

Introduction

Here is the source code for com.linkedin.pinot.core.indexsegment.utils.MmapMemoryManagerFileCleanupTest.java

Source

/**
 * 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.indexsegment.utils;

import com.linkedin.pinot.core.io.readerwriter.PinotDataBufferMemoryManager;
import com.linkedin.pinot.core.io.writer.impl.MmapMemoryManager;
import java.io.File;
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 MmapMemoryManagerFileCleanupTest {
    private String _tmpDir;

    @BeforeClass
    public void setUp() {
        _tmpDir = System.getProperty("java.io.tmpdir") + "/" + MmapMemoryManagerTest.class.getSimpleName();
        File dir = new File(_tmpDir);
        FileUtils.deleteQuietly(dir);
        dir.mkdir();
        dir.deleteOnExit();
    }

    @AfterClass
    public void tearDown() {
        new File(_tmpDir).delete();
    }

    // Since this file leaves MmapUtils allocation contexts in place, it cannot be included in MmapMemoryManagerTest
    @Test
    public void testFileDelete() throws Exception {
        final String segmentName = "someSegment";
        final String someColumn = "column";
        final long firstAlloc = 20;
        final long allocAfterRestart = 200;
        PinotDataBufferMemoryManager memoryManager = new MmapMemoryManager(_tmpDir, segmentName);
        memoryManager.allocate(firstAlloc, someColumn);
        // Now, if the host restarts, we will have a file left behind for the same consuming segment.
        // and we should not see any exception.
        memoryManager = new MmapMemoryManager(_tmpDir, segmentName);
        memoryManager.allocate(allocAfterRestart, someColumn);
        // We should not see the first allocation in the total.
        Assert.assertEquals(memoryManager.getTotalAllocatedBytes(), allocAfterRestart);
        memoryManager.close();
    }
}