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Support Native FST As An Index Subtype for FST Indices (apache#7729)
This PR introduces the notion of subtypes to FST index -- allowing users to set a segment level flag indicating whether the index should be built using native FST or Lucene FST.
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.../java/org/apache/pinot/segment/local/segment/index/creator/NativeFSTIndexCreatorTest.java
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| /** | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you 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.pinot.segment.local.segment.index.creator; | ||
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| import java.io.File; | ||
| import java.io.IOException; | ||
| import org.apache.commons.io.FileUtils; | ||
| import org.apache.pinot.segment.local.utils.nativefst.NativeFSTIndexCreator; | ||
| import org.apache.pinot.segment.local.utils.nativefst.NativeFSTIndexReader; | ||
| import org.apache.pinot.segment.spi.memory.PinotDataBuffer; | ||
| import org.testng.Assert; | ||
| import org.testng.annotations.AfterClass; | ||
| import org.testng.annotations.BeforeClass; | ||
| import org.testng.annotations.Test; | ||
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| import static org.apache.pinot.segment.spi.V1Constants.Indexes.FST_INDEX_FILE_EXTENSION; | ||
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| public class NativeFSTIndexCreatorTest { | ||
| private static final File INDEX_DIR = new File(FileUtils.getTempDirectory(), "NativeFSTIndexCreatorTest"); | ||
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| @BeforeClass | ||
| public void setUp() | ||
| throws IOException { | ||
| FileUtils.forceMkdir(INDEX_DIR); | ||
| } | ||
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| @AfterClass | ||
| public void tearDown() | ||
| throws IOException { | ||
| FileUtils.deleteDirectory(INDEX_DIR); | ||
| } | ||
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| @Test | ||
| public void testIndexWriterReader() | ||
| throws IOException { | ||
| String[] uniqueValues = new String[3]; | ||
| uniqueValues[0] = "hello-world"; | ||
| uniqueValues[1] = "hello-world123"; | ||
| uniqueValues[2] = "still"; | ||
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| try (NativeFSTIndexCreator creator = new NativeFSTIndexCreator(INDEX_DIR, "testFSTColumn", uniqueValues)) { | ||
| creator.seal(); | ||
| } | ||
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| File fstFile = new File(INDEX_DIR, "testFSTColumn" + FST_INDEX_FILE_EXTENSION); | ||
| try (PinotDataBuffer dataBuffer = PinotDataBuffer.mapReadOnlyBigEndianFile(fstFile); | ||
| NativeFSTIndexReader reader = new NativeFSTIndexReader(dataBuffer)) { | ||
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| int[] matchedDictIds = reader.getDictIds("hello.*").toArray(); | ||
| Assert.assertEquals(2, matchedDictIds.length); | ||
| Assert.assertEquals(0, matchedDictIds[0]); | ||
| Assert.assertEquals(1, matchedDictIds[1]); | ||
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| matchedDictIds = reader.getDictIds(".*llo").toArray(); | ||
| Assert.assertEquals(0, matchedDictIds.length); | ||
| } | ||
| } | ||
| } |
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