com.linkedin.pinot.segments.v1.creator.BitmapInvertedIndexTest.java Source code

Introduction

Here is the source code for com.linkedin.pinot.segments.v1.creator.BitmapInvertedIndexTest.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.segments.v1.creator;

import com.linkedin.pinot.util.TestUtils;

import java.io.File;
import java.io.FileInputStream;
import java.util.concurrent.TimeUnit;

import org.apache.avro.file.DataFileStream;
import org.apache.avro.generic.GenericDatumReader;
import org.apache.avro.generic.GenericRecord;
import org.apache.avro.util.Utf8;
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;

import com.linkedin.pinot.common.segment.ReadMode;
import com.linkedin.pinot.core.indexsegment.columnar.ColumnarSegmentLoader;
import com.linkedin.pinot.core.indexsegment.generator.SegmentGeneratorConfig;
import com.linkedin.pinot.core.segment.creator.SegmentIndexCreationDriver;
import com.linkedin.pinot.core.segment.creator.impl.SegmentCreationDriverFactory;
import com.linkedin.pinot.core.segment.index.IndexSegmentImpl;
import com.linkedin.pinot.core.segment.index.SegmentMetadataImpl;

public class BitmapInvertedIndexTest {
    private final String AVRO_DATA = "data/test_sample_data.avro";
    private static File INDEX_DIR = new File(BitmapInvertedIndexTest.class.toString());

    @Test
    public void test1() throws Exception {
        // load segment in heap mode
        final IndexSegmentImpl heapSegment = (IndexSegmentImpl) ColumnarSegmentLoader.load(INDEX_DIR,
                ReadMode.heap);
        // compare the loaded inverted index with the record in avro file
        final DataFileStream<GenericRecord> reader = new DataFileStream<GenericRecord>(
                new FileInputStream(new File(getClass().getClassLoader().getResource(AVRO_DATA).getFile())),
                new GenericDatumReader<GenericRecord>());
        int docId = 0;
        while (reader.hasNext()) {
            final GenericRecord rec = reader.next();
            for (final String column : ((SegmentMetadataImpl) heapSegment.getSegmentMetadata())
                    .getColumnMetadataMap().keySet()) {
                Object entry = rec.get(column);
                if (entry instanceof Utf8) {
                    entry = ((Utf8) entry).toString();
                }
                final int dicId = heapSegment.getDictionaryFor(column).indexOf(entry);
                // make sure that docId for dicId exist in the inverted index
                Assert.assertTrue(heapSegment.getInvertedIndexFor(column).getImmutable(dicId).contains(docId));
                final int size = heapSegment.getDictionaryFor(column).length();
                for (int i = 0; i < size; ++i) { // remove this for-loop for quick test
                    if (i == dicId) {
                        continue;
                    }
                    // make sure that docId for dicId does not exist in the inverted index
                    Assert.assertFalse(heapSegment.getInvertedIndexFor(column).getImmutable(i).contains(docId));
                }
            }
            ++docId;
        }
    }

    @Test
    public void test2() throws Exception {
        // load segment in mmap mode
        final IndexSegmentImpl mmapSegment = (IndexSegmentImpl) ColumnarSegmentLoader.load(INDEX_DIR,
                ReadMode.mmap);
        // compare the loaded inverted index with the record in avro file
        final DataFileStream<GenericRecord> reader = new DataFileStream<GenericRecord>(
                new FileInputStream(new File(getClass().getClassLoader().getResource(AVRO_DATA).getFile())),
                new GenericDatumReader<GenericRecord>());
        int docId = 0;
        while (reader.hasNext()) {
            final GenericRecord rec = reader.next();
            for (final String column : ((SegmentMetadataImpl) mmapSegment.getSegmentMetadata())
                    .getColumnMetadataMap().keySet()) {
                Object entry = rec.get(column);
                if (entry instanceof Utf8) {
                    entry = ((Utf8) entry).toString();
                }
                final int dicId = mmapSegment.getDictionaryFor(column).indexOf(entry);
                // make sure that docId for dicId exist in the inverted index
                Assert.assertTrue(mmapSegment.getInvertedIndexFor(column).getImmutable(dicId).contains(docId));
                final int size = mmapSegment.getDictionaryFor(column).length();
                for (int i = 0; i < size; ++i) { // remove this for-loop for quick test
                    if (i == dicId) {
                        continue;
                    }
                    // make sure that docId for dicId does not exist in the inverted index
                    Assert.assertFalse(mmapSegment.getInvertedIndexFor(column).getImmutable(i).contains(docId));
                }
            }
            ++docId;
        }
    }

    @AfterClass
    public void teardown() {
        FileUtils.deleteQuietly(INDEX_DIR);
    }

    @BeforeClass
    public void setup() throws Exception {
        final String filePath = TestUtils
                .getFileFromResourceUrl(getClass().getClassLoader().getResource(AVRO_DATA));

        if (INDEX_DIR.exists()) {
            FileUtils.deleteQuietly(INDEX_DIR);
        }

        final SegmentGeneratorConfig config = SegmentTestUtils.getSegmentGenSpecWithSchemAndProjectedColumns(
                new File(filePath), INDEX_DIR, "time_day", TimeUnit.DAYS, "test");

        final SegmentIndexCreationDriver driver = SegmentCreationDriverFactory.get(null);
        driver.init(config);
        driver.build();
        System.out.println("built at : " + INDEX_DIR.getAbsolutePath());
    }
}