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Posted to commits@nifi.apache.org by mc...@apache.org on 2018/10/04 13:33:00 UTC

[3/4] nifi git commit: NIFI-4806 updated tika and a ton of other deps as found by dependency versions plugin

http://git-wip-us.apache.org/repos/asf/nifi/blob/8e233ca2/nifi-nar-bundles/nifi-provenance-repository-bundle/nifi-persistent-provenance-repository/src/test/java/org/apache/nifi/provenance/ITestPersistentProvenanceRepository.java
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diff --git a/nifi-nar-bundles/nifi-provenance-repository-bundle/nifi-persistent-provenance-repository/src/test/java/org/apache/nifi/provenance/ITestPersistentProvenanceRepository.java b/nifi-nar-bundles/nifi-provenance-repository-bundle/nifi-persistent-provenance-repository/src/test/java/org/apache/nifi/provenance/ITestPersistentProvenanceRepository.java
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@@ -0,0 +1,2356 @@
+/*
+ * 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.nifi.provenance;
+
+import org.apache.lucene.analysis.Analyzer;
+import org.apache.lucene.analysis.core.SimpleAnalyzer;
+import org.apache.lucene.document.Document;
+import org.apache.lucene.index.DirectoryReader;
+import org.apache.lucene.index.IndexWriter;
+import org.apache.lucene.queryparser.classic.ParseException;
+import org.apache.lucene.queryparser.classic.QueryParser;
+import org.apache.lucene.search.IndexSearcher;
+import org.apache.lucene.search.ScoreDoc;
+import org.apache.lucene.search.TopDocs;
+import org.apache.lucene.store.FSDirectory;
+import org.apache.nifi.authorization.AccessDeniedException;
+import org.apache.nifi.authorization.user.NiFiUser;
+import org.apache.nifi.events.EventReporter;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.provenance.index.EventIndexSearcher;
+import org.apache.nifi.provenance.index.EventIndexWriter;
+import org.apache.nifi.provenance.lineage.EventNode;
+import org.apache.nifi.provenance.lineage.Lineage;
+import org.apache.nifi.provenance.lineage.LineageEdge;
+import org.apache.nifi.provenance.lineage.LineageNode;
+import org.apache.nifi.provenance.lineage.LineageNodeType;
+import org.apache.nifi.provenance.lucene.CachingIndexManager;
+import org.apache.nifi.provenance.lucene.IndexManager;
+import org.apache.nifi.provenance.lucene.IndexingAction;
+import org.apache.nifi.provenance.search.Query;
+import org.apache.nifi.provenance.search.QueryResult;
+import org.apache.nifi.provenance.search.QuerySubmission;
+import org.apache.nifi.provenance.search.SearchTerms;
+import org.apache.nifi.provenance.search.SearchableField;
+import org.apache.nifi.provenance.serialization.RecordReader;
+import org.apache.nifi.provenance.serialization.RecordReaders;
+import org.apache.nifi.provenance.serialization.RecordWriter;
+import org.apache.nifi.provenance.serialization.RecordWriters;
+import org.apache.nifi.reporting.Severity;
+import org.apache.nifi.util.NiFiProperties;
+import org.apache.nifi.util.file.FileUtils;
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.ClassRule;
+import org.junit.Ignore;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.TemporaryFolder;
+import org.junit.rules.TestName;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.DataOutputStream;
+import java.io.File;
+import java.io.FileFilter;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.UUID;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.atomic.AtomicLong;
+import java.util.stream.Collectors;
+import java.util.zip.GZIPOutputStream;
+
+import static org.apache.nifi.provenance.TestUtil.createFlowFile;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assume.assumeFalse;
+import static org.mockito.Mockito.mock;
+
+public class ITestPersistentProvenanceRepository {
+
+    @Rule
+    public TestName name = new TestName();
+
+    @ClassRule
+    public static TemporaryFolder tempFolder = new TemporaryFolder();
+
+    private PersistentProvenanceRepository repo;
+    private static RepositoryConfiguration config;
+
+    public static final int DEFAULT_ROLLOVER_MILLIS = 2000;
+    private EventReporter eventReporter;
+    private List<ReportedEvent> reportedEvents = Collections.synchronizedList(new ArrayList<ReportedEvent>());
+
+    private static int headerSize;
+    private static int recordSize;
+    private static int recordSize2;
+
+    private static RepositoryConfiguration createConfiguration() {
+        config = new RepositoryConfiguration();
+        config.addStorageDirectory("1", new File("target/storage/" + UUID.randomUUID().toString()));
+        config.setCompressOnRollover(true);
+        config.setMaxEventFileLife(2000L, TimeUnit.SECONDS);
+        config.setCompressionBlockBytes(100);
+        return config;
+    }
+
+    @BeforeClass
+    public static void setLogLevel() {
+        System.setProperty("org.slf4j.simpleLogger.log.org.apache.nifi.provenance", "DEBUG");
+    }
+
+    @BeforeClass
+    public static void findJournalSizes() throws IOException {
+        // determine header and record size
+
+        final Map<String, String> attributes = new HashMap<>();
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        attributes.put("uuid", "12345678-0000-0000-0000-012345678912");
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+        final ProvenanceEventRecord record = builder.build();
+        builder.setComponentId("2345");
+        final ProvenanceEventRecord record2 = builder.build();
+
+        final File tempRecordFile = tempFolder.newFile("record.tmp");
+        System.out.println("findJournalSizes position 0 = " + tempRecordFile.length());
+
+        final AtomicLong idGenerator = new AtomicLong(0L);
+        final RecordWriter writer = RecordWriters.newSchemaRecordWriter(tempRecordFile, idGenerator, false, false);
+        writer.writeHeader(12345L);
+        writer.flush();
+        headerSize = Long.valueOf(tempRecordFile.length()).intValue();
+        writer.writeRecord(record);
+        writer.flush();
+        recordSize = Long.valueOf(tempRecordFile.length()).intValue() - headerSize;
+        writer.writeRecord(record2);
+        writer.flush();
+        recordSize2 = Long.valueOf(tempRecordFile.length()).intValue() - headerSize - recordSize;
+        writer.close();
+
+        System.out.println("headerSize =" + headerSize);
+        System.out.println("recordSize =" + recordSize);
+        System.out.println("recordSize2=" + recordSize2);
+    }
+
+    @Before
+    public void printTestName() {
+        System.out.println("\n\n\n***********************  " + name.getMethodName() + "  *****************************");
+
+        reportedEvents.clear();
+        eventReporter = new EventReporter() {
+            private static final long serialVersionUID = 1L;
+
+            @Override
+            public void reportEvent(Severity severity, String category, String message) {
+                reportedEvents.add(new ReportedEvent(severity, category, message));
+                System.out.println(severity + " : " + category + " : " + message);
+            }
+        };
+    }
+
+    @After
+    public void closeRepo() throws IOException {
+        if (repo == null) {
+            return;
+        }
+
+        try {
+            repo.close();
+        } catch (final IOException ioe) {
+        }
+
+        // Delete all of the storage files. We do this in order to clean up the tons of files that
+        // we create but also to ensure that we have closed all of the file handles. If we leave any
+        // streams open, for instance, this will throw an IOException, causing our unit test to fail.
+        if (config != null) {
+            for (final File storageDir : config.getStorageDirectories().values()) {
+                int i;
+                for (i = 0; i < 3; i++) {
+                    try {
+                        FileUtils.deleteFile(storageDir, true);
+                        break;
+                    } catch (final IOException ioe) {
+                        // if there is a virus scanner, etc. running in the background we may not be able to
+                        // delete the file. Wait a sec and try again.
+                        if (i == 2) {
+                            throw ioe;
+                        } else {
+                            try {
+                                System.out.println("file: " + storageDir.toString() + " exists=" + storageDir.exists());
+                                FileUtils.deleteFile(storageDir, true);
+                                break;
+                            } catch (final IOException ioe2) {
+                                // if there is a virus scanner, etc. running in the background we may not be able to
+                                // delete the file. Wait a sec and try again.
+                                if (i == 2) {
+                                    throw ioe2;
+                                } else {
+                                    try {
+                                        Thread.sleep(1000L);
+                                    } catch (final InterruptedException ie) {
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    private EventReporter getEventReporter() {
+        return eventReporter;
+    }
+
+    @Test
+    @Ignore("For local testing of performance only")
+    public void testPerformance() throws IOException, InterruptedException {
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxEventFileCapacity(1024 * 1024 * 1024L);
+        config.setMaxEventFileLife(20, TimeUnit.SECONDS);
+        config.setCompressOnRollover(false);
+        config.setJournalCount(10);
+        config.setQueryThreadPoolSize(10);
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final Map<String, String> attributes = new HashMap<>();
+        attributes.put("abc", "xyz");
+        attributes.put("xyz", "abc");
+        attributes.put("uuid", UUID.randomUUID().toString());
+
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+        final ProvenanceEventRecord record = builder.build();
+
+        final Runnable r = new Runnable() {
+            @Override
+            public void run() {
+                for (int i = 0; i < 100000; i++) {
+                    repo.registerEvent(record);
+                }
+            }
+        };
+
+        final Thread[] threads = new Thread[10];
+        for (int i = 0; i < threads.length; i++) {
+            threads[i] = new Thread(r);
+        }
+
+        final long start = System.nanoTime();
+        for (final Thread t : threads) {
+            t.start();
+        }
+
+        for (final Thread t : threads) {
+            t.join();
+        }
+        final long nanos = System.nanoTime() - start;
+
+        final long millis = TimeUnit.NANOSECONDS.toMillis(nanos);
+        final long recsPerMilli = 1000000 / millis;
+        final long recsPerSec = recsPerMilli * 1000;
+        System.out.println(millis + " millis to insert 1M records (" + recsPerSec + " recs/sec)");
+
+        System.out.println("Closing and re-initializing");
+        repo.close();
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+        System.out.println("Re-initialized");
+
+        final long fetchStart = System.nanoTime();
+        final List<ProvenanceEventRecord> records = repo.getEvents(0L, 1000000);
+        final long fetchMillis = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - fetchStart);
+        assertEquals(1000000, records.size());
+        final long fetchRecsPerMilli = 1000000 / fetchMillis;
+        final long fetchRecsPerSec = fetchRecsPerMilli * 1000L;
+        System.out.println(fetchMillis + " millis to fetch 1M records (" + fetchRecsPerSec + " recs/sec)");
+
+        repo.close();
+    }
+
+    private NiFiProperties properties = new NiFiProperties() {
+        @Override
+        public String getProperty(String key) {
+            if (key.equals(NiFiProperties.PROVENANCE_COMPRESS_ON_ROLLOVER)) {
+                return "true";
+            } else if (key.equals(NiFiProperties.PROVENANCE_ROLLOVER_TIME)) {
+                return "2000 millis";
+            } else if (key.equals(NiFiProperties.PROVENANCE_REPO_DIRECTORY_PREFIX + ".default")) {
+                createConfiguration();
+                return config.getStorageDirectories().values().iterator().next().getAbsolutePath();
+            } else {
+                return null;
+            }
+        }
+
+        @Override
+        public Set<String> getPropertyKeys() {
+            return new HashSet<>(Arrays.asList(
+                    NiFiProperties.PROVENANCE_COMPRESS_ON_ROLLOVER,
+                    NiFiProperties.PROVENANCE_ROLLOVER_TIME,
+                    NiFiProperties.PROVENANCE_REPO_DIRECTORY_PREFIX + ".default"));
+        }
+    };
+
+    @Test
+    public void constructorNoArgs() {
+        TestablePersistentProvenanceRepository tppr = new TestablePersistentProvenanceRepository();
+        assertEquals(0, tppr.getRolloverCheckMillis());
+    }
+
+    @Test
+    public void constructorNiFiProperties() throws IOException {
+        TestablePersistentProvenanceRepository tppr = new TestablePersistentProvenanceRepository(properties);
+        assertEquals(10000, tppr.getRolloverCheckMillis());
+    }
+
+    @Test
+    public void constructorConfig() throws IOException {
+        RepositoryConfiguration configuration = RepositoryConfiguration.create(properties);
+        new TestablePersistentProvenanceRepository(configuration, 20000);
+    }
+
+    @Test
+    public void testAddAndRecover() throws IOException, InterruptedException {
+        assumeFalse(isWindowsEnvironment());
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxEventFileCapacity(1L);
+        config.setMaxEventFileLife(1, TimeUnit.SECONDS);
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final Map<String, String> attributes = new HashMap<>();
+        attributes.put("abc", "xyz");
+        attributes.put("xyz", "abc");
+        attributes.put("uuid", UUID.randomUUID().toString());
+
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+        final ProvenanceEventRecord record = builder.build();
+
+        for (int i = 0; i < 10; i++) {
+            repo.registerEvent(record);
+        }
+
+        Thread.sleep(1000L);
+
+        repo.close();
+        Thread.sleep(500L); // Give the repo time to shutdown (i.e., close all file handles, etc.)
+
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+        final List<ProvenanceEventRecord> recoveredRecords = repo.getEvents(0L, 12);
+
+        //just test however many were actually recovered since it is timing sensitive
+        final int numRecovered = recoveredRecords.size();
+        for (int i = 0; i < numRecovered; i++) {
+            final ProvenanceEventRecord recovered = recoveredRecords.get(i);
+            assertEquals(i, recovered.getEventId());
+            assertEquals("nifi://unit-test", recovered.getTransitUri());
+            assertEquals(ProvenanceEventType.RECEIVE, recovered.getEventType());
+            assertEquals(attributes, recovered.getAttributes());
+        }
+    }
+
+    @Test
+    public void testAddToMultipleLogsAndRecover() throws IOException, InterruptedException {
+        assumeFalse(isWindowsEnvironment());
+        final List<SearchableField> searchableFields = new ArrayList<>();
+        searchableFields.add(SearchableFields.ComponentID);
+
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxEventFileCapacity(1024L * 1024L);
+        config.setMaxEventFileLife(2, TimeUnit.SECONDS);
+        config.setSearchableFields(searchableFields);
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final Map<String, String> attributes = new HashMap<>();
+        attributes.put("abc", "xyz");
+        attributes.put("xyz", "abc");
+        attributes.put("uuid", UUID.randomUUID().toString());
+
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+        final ProvenanceEventRecord record = builder.build();
+
+        for (int i = 0; i < 10; i++) {
+            repo.registerEvent(record);
+        }
+
+        builder.setComponentId("XXXX"); // create a different component id so that we can make sure we query this record.
+
+        attributes.put("uuid", "11111111-1111-1111-1111-111111111111");
+
+        builder.fromFlowFile(createFlowFile(11L, 11L, attributes));
+        repo.registerEvent(builder.build());
+
+        repo.waitForRollover();
+        Thread.sleep(500L); // Give the repo time to shutdown (i.e., close all file handles, etc.)
+
+        // Create a new repo and add another record with component id XXXX so that we can ensure that it's added to a different
+        // log file than the previous one.
+        attributes.put("uuid", "22222222-2222-2222-2222-222222222222");
+        builder.fromFlowFile(createFlowFile(11L, 11L, attributes));
+        repo.registerEvent(builder.build());
+        repo.waitForRollover();
+
+        final Query query = new Query(UUID.randomUUID().toString());
+        query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.ComponentID, "XXXX"));
+        query.setMaxResults(100);
+
+        final QueryResult result = repo.queryEvents(query, createUser());
+        assertEquals(2, result.getMatchingEvents().size());
+        for (final ProvenanceEventRecord match : result.getMatchingEvents()) {
+            System.out.println(match);
+        }
+    }
+
+    @Test
+    public void testIndexOnRolloverWithImmenseAttribute() throws IOException {
+        assumeFalse(isWindowsEnvironment());
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxEventFileLife(500, TimeUnit.MILLISECONDS);
+        config.setSearchableFields(new ArrayList<>(SearchableFields.getStandardFields()));
+        config.setSearchableAttributes(SearchableFieldParser.extractSearchableFields("immense", false));
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        int immenseAttrSize = 33000; // must be greater than 32766 for a meaningful test
+        StringBuilder immenseBldr = new StringBuilder(immenseAttrSize);
+        for (int i = 0; i < immenseAttrSize; i++) {
+            immenseBldr.append('0');
+        }
+        final String uuid = "00000000-0000-0000-0000-000000000000";
+        final Map<String, String> attributes = new HashMap<>();
+        attributes.put("abc", "xyz");
+        attributes.put("xyz", "abc");
+        attributes.put("filename", "file-" + uuid);
+        attributes.put("immense", immenseBldr.toString());
+
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+
+        for (int i = 0; i < 10; i++) {
+            attributes.put("uuid", "00000000-0000-0000-0000-00000000000" + i);
+            builder.fromFlowFile(createFlowFile(i, 3000L, attributes));
+            repo.registerEvent(builder.build());
+        }
+
+        repo.waitForRollover();
+
+        final Query query = new Query(UUID.randomUUID().toString());
+        query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.newSearchableAttribute("immense"), "000*"));
+        query.setMaxResults(100);
+
+        final QueryResult result = repo.queryEvents(query, createUser());
+        assertEquals(10, result.getMatchingEvents().size());
+    }
+
+    @Test
+    public void testIndexOnRolloverAndSubsequentSearch() throws IOException, InterruptedException, ParseException {
+        assumeFalse(isWindowsEnvironment());
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxEventFileLife(500, TimeUnit.MILLISECONDS);
+        config.setSearchableFields(new ArrayList<>(SearchableFields.getStandardFields()));
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final String uuid = "00000000-0000-0000-0000-000000000000";
+        final Map<String, String> attributes = new HashMap<>();
+        attributes.put("abc", "xyz");
+        attributes.put("xyz", "abc");
+        attributes.put("filename", "file-" + uuid);
+
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+
+        for (int i = 0; i < 10; i++) {
+            attributes.put("uuid", "00000000-0000-0000-0000-00000000000" + i);
+            builder.fromFlowFile(createFlowFile(i, 3000L, attributes));
+            repo.registerEvent(builder.build());
+        }
+
+        repo.waitForRollover();
+
+        final Query query = new Query(UUID.randomUUID().toString());
+        query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.FlowFileUUID, "000000*"));
+        query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.Filename, "file-*"));
+        query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.ComponentID, "12?4"));
+        query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.TransitURI, "nifi://*"));
+        query.setMaxResults(100);
+
+        final QueryResult result = repo.queryEvents(query, createUser());
+        assertEquals(10, result.getMatchingEvents().size());
+        for (final ProvenanceEventRecord match : result.getMatchingEvents()) {
+            System.out.println(match);
+        }
+    }
+
+    @Test
+    public void testCompressOnRollover() throws IOException, InterruptedException, ParseException {
+        assumeFalse(isWindowsEnvironment());
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxEventFileLife(500, TimeUnit.MILLISECONDS);
+        config.setCompressOnRollover(true);
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final String uuid = "00000000-0000-0000-0000-000000000000";
+        final Map<String, String> attributes = new HashMap<>();
+        attributes.put("abc", "xyz");
+        attributes.put("xyz", "abc");
+        attributes.put("filename", "file-" + uuid);
+
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        attributes.put("uuid", uuid);
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+
+        for (int i = 0; i < 10; i++) {
+            builder.fromFlowFile(createFlowFile(i, 3000L, attributes));
+            repo.registerEvent(builder.build());
+        }
+
+        repo.waitForRollover();
+        final File storageDir = config.getStorageDirectories().values().iterator().next();
+        final File compressedLogFile = new File(storageDir, "0.prov.gz");
+        assertTrue(compressedLogFile.exists());
+    }
+
+    @Test
+    public void testIndexAndCompressOnRolloverAndSubsequentSearch() throws IOException, InterruptedException, ParseException {
+        assumeFalse(isWindowsEnvironment());
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxRecordLife(30, TimeUnit.SECONDS);
+        config.setMaxStorageCapacity(1024L * 1024L * 10);
+        config.setMaxEventFileLife(500, TimeUnit.MILLISECONDS);
+        config.setMaxEventFileCapacity(1024L * 1024L * 10);
+        config.setSearchableFields(new ArrayList<>(SearchableFields.getStandardFields()));
+
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final String uuid = "10000000-0000-0000-0000-000000000000";
+        final Map<String, String> attributes = new HashMap<>();
+        attributes.put("abc", "xyz");
+        attributes.put("xyz", "abc");
+        attributes.put("filename", "file-" + uuid);
+
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        attributes.put("uuid", uuid);
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+
+        for (int i = 0; i < 10; i++) {
+            builder.fromFlowFile(createFlowFile(i, 3000L, attributes));
+            attributes.put("uuid", "00000000-0000-0000-0000-00000000000" + i);
+            repo.registerEvent(builder.build());
+        }
+
+        repo.waitForRollover();
+
+        final Query query = new Query(UUID.randomUUID().toString());
+        // query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.FlowFileUUID, "00000000-0000-0000-0000*"));
+        query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.Filename, "file-*"));
+        query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.ComponentID, "12?4"));
+        query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.TransitURI, "nifi://*"));
+        query.setMaxResults(100);
+
+        final QueryResult result = repo.queryEvents(query, createUser());
+        assertEquals(10, result.getMatchingEvents().size());
+        for (final ProvenanceEventRecord match : result.getMatchingEvents()) {
+            System.out.println(match);
+        }
+
+        Thread.sleep(2000L);
+
+        config.setMaxStorageCapacity(100L);
+        config.setMaxRecordLife(500, TimeUnit.MILLISECONDS);
+        repo.purgeOldEvents();
+        Thread.sleep(2000L);
+
+        final QueryResult newRecordSet = repo.queryEvents(query, createUser());
+        assertTrue(newRecordSet.getMatchingEvents().isEmpty());
+    }
+
+    @Test(timeout = 10000)
+    public void testModifyIndexWhileSearching() throws IOException, InterruptedException, ParseException {
+        assumeFalse(isWindowsEnvironment());
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxRecordLife(30, TimeUnit.SECONDS);
+        config.setMaxStorageCapacity(1024L * 1024L * 10);
+        config.setMaxEventFileLife(500, TimeUnit.MILLISECONDS);
+        config.setMaxEventFileCapacity(1024L * 1024L * 10);
+        config.setSearchableFields(new ArrayList<>(SearchableFields.getStandardFields()));
+
+        final CountDownLatch obtainIndexSearcherLatch = new CountDownLatch(2);
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS) {
+            private CachingIndexManager wrappedManager = null;
+
+            // Create an IndexManager that adds a delay before returning the Index Searcher.
+            @Override
+            protected synchronized CachingIndexManager getIndexManager() {
+                if (wrappedManager == null) {
+                    final IndexManager mgr = super.getIndexManager();
+                    final Logger logger = LoggerFactory.getLogger("IndexManager");
+
+                    wrappedManager = new CachingIndexManager() {
+                        final AtomicInteger indexSearcherCount = new AtomicInteger(0);
+
+                        @Override
+                        public EventIndexSearcher borrowIndexSearcher(File indexDir) throws IOException {
+                            final EventIndexSearcher searcher = mgr.borrowIndexSearcher(indexDir);
+                            final int idx = indexSearcherCount.incrementAndGet();
+                            obtainIndexSearcherLatch.countDown();
+
+                            // The first searcher should sleep for 3 seconds. The second searcher should
+                            // sleep for 5 seconds. This allows us to have two threads each obtain a Searcher
+                            // and then have one of them finish searching and close the searcher if it's poisoned while the
+                            // second thread is still holding the searcher
+                            try {
+                                if (idx == 1) {
+                                    Thread.sleep(3000L);
+                                } else {
+                                    Thread.sleep(5000L);
+                                }
+                            } catch (InterruptedException e) {
+                                throw new IOException("Interrupted", e);
+                            }
+
+                            logger.info("Releasing index searcher");
+                            return searcher;
+                        }
+
+                        @Override
+                        public EventIndexWriter borrowIndexWriter(File indexingDirectory) throws IOException {
+                            return mgr.borrowIndexWriter(indexingDirectory);
+                        }
+
+                        @Override
+                        public void close() throws IOException {
+                            mgr.close();
+                        }
+
+                        @Override
+                        public boolean removeIndex(File indexDirectory) {
+                            mgr.removeIndex(indexDirectory);
+                            return true;
+                        }
+
+                        @Override
+                        public void returnIndexSearcher(EventIndexSearcher searcher) {
+                            mgr.returnIndexSearcher(searcher);
+                        }
+
+                        @Override
+                        public void returnIndexWriter(EventIndexWriter writer) {
+                            mgr.returnIndexWriter(writer);
+                        }
+                    };
+                }
+
+                return wrappedManager;
+            }
+        };
+
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final String uuid = "10000000-0000-0000-0000-000000000000";
+        final Map<String, String> attributes = new HashMap<>();
+        attributes.put("abc", "xyz");
+        attributes.put("xyz", "abc");
+        attributes.put("filename", "file-" + uuid);
+
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        attributes.put("uuid", uuid);
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+
+        for (int i = 0; i < 10; i++) {
+            builder.fromFlowFile(createFlowFile(i, 3000L, attributes));
+            attributes.put("uuid", "00000000-0000-0000-0000-00000000000" + i);
+            repo.registerEvent(builder.build());
+        }
+
+        repo.waitForRollover();
+
+        // Perform a query. This will ensure that an IndexSearcher is created and cached.
+        final Query query = new Query(UUID.randomUUID().toString());
+        query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.Filename, "file-*"));
+        query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.ComponentID, "12?4"));
+        query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.TransitURI, "nifi://*"));
+        query.setMaxResults(100);
+
+        // Run a query in a background thread. When this thread goes to obtain the IndexSearcher, it will have a 5 second delay.
+        // That delay will occur as the main thread is updating the index. This should result in the search creating a new Index Reader
+        // that can properly query the index.
+        final int numThreads = 2;
+        final CountDownLatch performSearchLatch = new CountDownLatch(numThreads);
+        final Runnable searchRunnable = new Runnable() {
+            @Override
+            public void run() {
+                QueryResult result;
+                try {
+                    result = repo.queryEvents(query, createUser());
+                } catch (IOException e) {
+                    e.printStackTrace();
+                    Assert.fail(e.toString());
+                    return;
+                }
+
+                System.out.println("Finished search: " + result);
+                performSearchLatch.countDown();
+            }
+        };
+
+        // Kick off the searcher threads
+        for (int i = 0; i < numThreads; i++) {
+            final Thread searchThread = new Thread(searchRunnable);
+            searchThread.start();
+        }
+
+        // Wait until we've obtained the Index Searchers before modifying the index.
+        obtainIndexSearcherLatch.await();
+
+        // add more events to the repo
+        for (int i = 0; i < 10; i++) {
+            builder.fromFlowFile(createFlowFile(i, 3000L, attributes));
+            attributes.put("uuid", "00000000-0000-0000-0000-00000000000" + i);
+            repo.registerEvent(builder.build());
+        }
+
+        // Force a rollover to occur. This will modify the index.
+        repo.rolloverWithLock(true);
+
+        // Wait for the repository to roll over.
+        repo.waitForRollover();
+
+        // Wait for the searches to complete.
+        performSearchLatch.await();
+    }
+
+    @Test
+    public void testIndexAndCompressOnRolloverAndSubsequentSearchMultipleStorageDirs() throws IOException, InterruptedException, ParseException {
+        assumeFalse(isWindowsEnvironment());
+        final RepositoryConfiguration config = createConfiguration();
+        config.addStorageDirectory("2", new File("target/storage/" + UUID.randomUUID().toString()));
+        config.setMaxRecordLife(30, TimeUnit.SECONDS);
+        config.setMaxStorageCapacity(1024L * 1024L);
+        config.setMaxEventFileLife(1, TimeUnit.SECONDS);
+        config.setMaxEventFileCapacity(1024L * 1024L);
+        config.setSearchableFields(new ArrayList<>(SearchableFields.getStandardFields()));
+
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final String uuid = "00000000-0000-0000-0000-000000000000";
+        final Map<String, String> attributes = new HashMap<>();
+        attributes.put("abc", "xyz");
+        attributes.put("xyz", "abc");
+        attributes.put("filename", "file-" + uuid);
+
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        for (int j = 0; j < 3; j++) {
+            attributes.put("iteration", String.valueOf(j));
+
+            builder.setEventTime(System.currentTimeMillis());
+            builder.setEventType(ProvenanceEventType.RECEIVE);
+            builder.setTransitUri("nifi://unit-test");
+            builder.setComponentId("1234");
+            builder.setComponentType("dummy processor");
+            builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+
+            for (int i = 0; i < 10; i++) {
+                String uuidSuffix = String.valueOf(i + j * 10);
+                if (uuidSuffix.length() < 2) {
+                    uuidSuffix = "0" + uuidSuffix;
+                }
+
+                attributes.put("uuid", "00000000-0000-0000-0000-0000000000" + uuidSuffix);
+                builder.fromFlowFile(createFlowFile(i + j * 10, 3000L, attributes));
+                repo.registerEvent(builder.build());
+            }
+
+            repo.waitForRollover();
+        }
+
+        final Query query = new Query(UUID.randomUUID().toString());
+        query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.Filename, "file-*"));
+        query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.ComponentID, "12?4"));
+        query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.TransitURI, "nifi://*"));
+        query.setMaxResults(100);
+
+        final QuerySubmission submission = repo.submitQuery(query, createUser());
+        while (!submission.getResult().isFinished()) {
+            Thread.sleep(100L);
+        }
+
+        assertEquals(30, submission.getResult().getMatchingEvents().size());
+        final Map<String, Integer> counts = new HashMap<>();
+        for (final ProvenanceEventRecord match : submission.getResult().getMatchingEvents()) {
+            System.out.println(match);
+
+            final String index = match.getAttributes().get("iteration");
+            Integer count = counts.get(index);
+            if (count == null) {
+                count = 0;
+            }
+            counts.put(index, count + 1);
+        }
+
+        assertEquals(3, counts.size());
+        assertEquals(10, counts.get("0").intValue());
+        assertEquals(10, counts.get("1").intValue());
+        assertEquals(10, counts.get("2").intValue());
+
+        config.setMaxRecordLife(1, TimeUnit.MILLISECONDS);
+
+        repo.purgeOldEvents();
+
+        Thread.sleep(2000L); // purge is async. Give it time to do its job.
+
+        query.setMaxResults(100);
+        final QuerySubmission noResultSubmission = repo.submitQuery(query, createUser());
+        while (!noResultSubmission.getResult().isFinished()) {
+            Thread.sleep(10L);
+        }
+
+        assertEquals(0, noResultSubmission.getResult().getTotalHitCount());
+    }
+
+    @Test
+    public void testIndexAndCompressOnRolloverAndSubsequentEmptySearch() throws IOException, InterruptedException, ParseException {
+        assumeFalse(isWindowsEnvironment());
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxRecordLife(30, TimeUnit.SECONDS);
+        config.setMaxStorageCapacity(1024L * 1024L);
+        config.setMaxEventFileLife(500, TimeUnit.MILLISECONDS);
+        config.setMaxEventFileCapacity(1024L * 1024L);
+        config.setSearchableFields(new ArrayList<>(SearchableFields.getStandardFields()));
+
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final String uuid = "00000000-0000-0000-0000-000000000000";
+        final Map<String, String> attributes = new HashMap<>();
+        attributes.put("abc", "xyz");
+        attributes.put("xyz", "abc");
+        attributes.put("filename", "file-" + uuid);
+
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        attributes.put("uuid", uuid);
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+
+        for (int i = 0; i < 10; i++) {
+            builder.fromFlowFile(createFlowFile(i, 3000L, attributes));
+            repo.registerEvent(builder.build());
+        }
+
+        // Give time for rollover to happen
+        repo.waitForRollover();
+
+        final Query query = new Query(UUID.randomUUID().toString());
+        query.setMaxResults(100);
+
+        final QueryResult result = repo.queryEvents(query, createUser());
+        assertEquals(10, result.getMatchingEvents().size());
+        for (final ProvenanceEventRecord match : result.getMatchingEvents()) {
+            System.out.println(match);
+        }
+
+        Thread.sleep(2000L);
+
+        config.setMaxStorageCapacity(100L);
+        config.setMaxRecordLife(500, TimeUnit.MILLISECONDS);
+        repo.purgeOldEvents();
+
+        Thread.sleep(1000L);
+
+        final QueryResult newRecordSet = repo.queryEvents(query, createUser());
+        assertTrue(newRecordSet.getMatchingEvents().isEmpty());
+    }
+
+    @Test
+    public void testLineageReceiveDrop() throws IOException, InterruptedException, ParseException {
+        assumeFalse(isWindowsEnvironment());
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxRecordLife(3, TimeUnit.SECONDS);
+        config.setMaxStorageCapacity(1024L * 1024L);
+        config.setMaxEventFileLife(500, TimeUnit.MILLISECONDS);
+        config.setMaxEventFileCapacity(1024L * 1024L);
+        config.setSearchableFields(new ArrayList<>(SearchableFields.getStandardFields()));
+
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final String uuid = "00000000-0000-0000-0000-000000000001";
+        final Map<String, String> attributes = new HashMap<>();
+        attributes.put("abc", "xyz");
+        attributes.put("uuid", uuid);
+        attributes.put("filename", "file-" + uuid);
+
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        attributes.put("uuid", uuid);
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+
+        repo.registerEvent(builder.build());
+
+        builder.setEventTime(System.currentTimeMillis() + 1);
+        builder.setEventType(ProvenanceEventType.DROP);
+        builder.setTransitUri(null);
+        repo.registerEvent(builder.build());
+
+        repo.waitForRollover();
+
+        final Lineage lineage = repo.computeLineage(uuid, createUser());
+        assertNotNull(lineage);
+
+        // Nodes should consist of a RECEIVE followed by FlowFileNode, followed by a DROP
+        final List<LineageNode> nodes = lineage.getNodes();
+        final List<LineageEdge> edges = lineage.getEdges();
+        assertEquals(3, nodes.size());
+
+        for (final LineageEdge edge : edges) {
+            if (edge.getSource().getNodeType() == LineageNodeType.FLOWFILE_NODE) {
+                assertTrue(edge.getDestination().getNodeType() == LineageNodeType.PROVENANCE_EVENT_NODE);
+                assertTrue(((EventNode) edge.getDestination()).getEventType() == ProvenanceEventType.DROP);
+            } else {
+                assertTrue(((EventNode) edge.getSource()).getEventType() == ProvenanceEventType.RECEIVE);
+                assertTrue(edge.getDestination().getNodeType() == LineageNodeType.FLOWFILE_NODE);
+            }
+        }
+    }
+
+    @Test
+    public void testLineageReceiveDropAsync() throws IOException, InterruptedException, ParseException {
+        assumeFalse(isWindowsEnvironment());
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxRecordLife(3, TimeUnit.SECONDS);
+        config.setMaxStorageCapacity(1024L * 1024L);
+        config.setMaxEventFileLife(500, TimeUnit.MILLISECONDS);
+        config.setMaxEventFileCapacity(1024L * 1024L);
+        config.setSearchableFields(new ArrayList<>(SearchableFields.getStandardFields()));
+
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final String uuid = "00000000-0000-0000-0000-000000000001";
+        final Map<String, String> attributes = new HashMap<>();
+        attributes.put("abc", "xyz");
+        attributes.put("uuid", uuid);
+        attributes.put("filename", "file-" + uuid);
+
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        attributes.put("uuid", uuid);
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+
+        repo.registerEvent(builder.build());
+
+        builder.setEventTime(System.currentTimeMillis() + 1);
+        builder.setEventType(ProvenanceEventType.DROP);
+        builder.setTransitUri(null);
+        repo.registerEvent(builder.build());
+
+        repo.waitForRollover();
+
+        final AsyncLineageSubmission submission = repo.submitLineageComputation(uuid, createUser());
+        while (!submission.getResult().isFinished()) {
+            Thread.sleep(100L);
+        }
+
+        assertNotNull(submission);
+
+        // Nodes should consist of a RECEIVE followed by FlowFileNode, followed by a DROP
+        final List<LineageNode> nodes = submission.getResult().getNodes();
+        final List<LineageEdge> edges = submission.getResult().getEdges();
+        assertEquals(3, nodes.size());
+
+        for (final LineageEdge edge : edges) {
+            if (edge.getSource().getNodeType() == LineageNodeType.FLOWFILE_NODE) {
+                assertTrue(edge.getDestination().getNodeType() == LineageNodeType.PROVENANCE_EVENT_NODE);
+                assertTrue(((EventNode) edge.getDestination()).getEventType() == ProvenanceEventType.DROP);
+            } else {
+                assertTrue(((EventNode) edge.getSource()).getEventType() == ProvenanceEventType.RECEIVE);
+                assertTrue(edge.getDestination().getNodeType() == LineageNodeType.FLOWFILE_NODE);
+            }
+        }
+    }
+
+    @Test
+    public void testLineageManyToOneSpawn() throws IOException, InterruptedException, ParseException {
+        assumeFalse(isWindowsEnvironment());
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxRecordLife(3, TimeUnit.SECONDS);
+        config.setMaxStorageCapacity(1024L * 1024L);
+        config.setMaxEventFileLife(500, TimeUnit.MILLISECONDS);
+        config.setMaxEventFileCapacity(1024L * 1024L);
+        config.setSearchableFields(new ArrayList<>(SearchableFields.getStandardFields()));
+
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final String childId = "00000000-0000-0000-0000-000000000000";
+
+        final String parentId1 = "00000000-0000-0000-0001-000000000001";
+        final String parentId2 = "00000000-0000-0000-0001-000000000002";
+        final String parentId3 = "00000000-0000-0000-0001-000000000003";
+
+        final Map<String, String> attributes = new HashMap<>();
+        attributes.put("abc", "xyz");
+        attributes.put("uuid", childId);
+        attributes.put("filename", "file-" + childId);
+
+        final StandardProvenanceEventRecord.Builder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.FORK);
+        attributes.put("uuid", childId);
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+
+        builder.addChildUuid(childId);
+        builder.addParentUuid(parentId1);
+        builder.addParentUuid(parentId2);
+        builder.addParentUuid(parentId3);
+
+        repo.registerEvent(builder.build());
+
+        repo.waitForRollover();
+
+        final Lineage lineage = repo.computeLineage(childId, createUser());
+        assertNotNull(lineage);
+
+        // these are not necessarily accurate asserts....
+        final List<LineageNode> nodes = lineage.getNodes();
+        final List<LineageEdge> edges = lineage.getEdges();
+        assertEquals(2, nodes.size());
+        assertEquals(1, edges.size());
+    }
+
+    @Test
+    public void testLineageManyToOneSpawnAsync() throws IOException, InterruptedException, ParseException {
+        assumeFalse(isWindowsEnvironment());
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxRecordLife(3, TimeUnit.SECONDS);
+        config.setMaxStorageCapacity(1024L * 1024L);
+        config.setMaxEventFileLife(500, TimeUnit.MILLISECONDS);
+        config.setMaxEventFileCapacity(1024L * 1024L);
+        config.setSearchableFields(new ArrayList<>(SearchableFields.getStandardFields()));
+
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final String childId = "00000000-0000-0000-0000-000000000000";
+
+        final String parentId1 = "00000000-0000-0000-0001-000000000001";
+        final String parentId2 = "00000000-0000-0000-0001-000000000002";
+        final String parentId3 = "00000000-0000-0000-0001-000000000003";
+
+        final Map<String, String> attributes = new HashMap<>();
+        attributes.put("abc", "xyz");
+        attributes.put("uuid", childId);
+        attributes.put("filename", "file-" + childId);
+
+        final StandardProvenanceEventRecord.Builder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.FORK);
+        attributes.put("uuid", childId);
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+
+        builder.addChildUuid(childId);
+        builder.addParentUuid(parentId1);
+        builder.addParentUuid(parentId2);
+        builder.addParentUuid(parentId3);
+
+        repo.registerEvent(builder.build());
+
+        repo.waitForRollover();
+
+        final AsyncLineageSubmission submission = repo.submitLineageComputation(childId, createUser());
+        while (!submission.getResult().isFinished()) {
+            Thread.sleep(100L);
+        }
+
+        // these are not accurate asserts....
+        final List<LineageNode> nodes = submission.getResult().getNodes();
+        final List<LineageEdge> edges = submission.getResult().getEdges();
+        assertEquals(2, nodes.size());
+        assertEquals(1, edges.size());
+    }
+
+    @Test
+    public void testCorrectProvenanceEventIdOnRestore() throws IOException {
+        assumeFalse(isWindowsEnvironment());
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxEventFileLife(1, TimeUnit.SECONDS);
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final String uuid = "00000000-0000-0000-0000-000000000000";
+        final Map<String, String> attributes = new HashMap<>();
+        attributes.put("abc", "xyz");
+        attributes.put("xyz", "abc");
+        attributes.put("filename", "file-" + uuid);
+
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        attributes.put("uuid", uuid);
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+
+        for (int i = 0; i < 10; i++) {
+            builder.fromFlowFile(createFlowFile(i, 3000L, attributes));
+            attributes.put("uuid", "00000000-0000-0000-0000-00000000000" + i);
+            repo.registerEvent(builder.build());
+        }
+
+        repo.close();
+
+        final PersistentProvenanceRepository secondRepo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        secondRepo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        try {
+            final ProvenanceEventRecord event11 = builder.build();
+            secondRepo.registerEvent(event11);
+            secondRepo.waitForRollover();
+            final ProvenanceEventRecord event11Retrieved = secondRepo.getEvent(10L, null);
+            assertNotNull(event11Retrieved);
+            assertEquals(10, event11Retrieved.getEventId());
+        } finally {
+            secondRepo.close();
+        }
+    }
+
+    /**
+     * Here the event file is simply corrupted by virtue of not having any event
+     * records while having correct headers
+     */
+    @Test
+    public void testWithWithEventFileMissingRecord() throws Exception {
+        assumeFalse(isWindowsEnvironment());
+        File eventFile = this.prepCorruptedEventFileTests();
+
+        final Query query = new Query(UUID.randomUUID().toString());
+        query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.ComponentID, "foo-*"));
+        query.setMaxResults(100);
+
+        DataOutputStream in = new DataOutputStream(new GZIPOutputStream(new FileOutputStream(eventFile)));
+        in.writeUTF("BlahBlah");
+        in.writeInt(4);
+        in.close();
+        assertTrue(eventFile.exists());
+        final QueryResult result = repo.queryEvents(query, createUser());
+        assertEquals(10, result.getMatchingEvents().size());
+    }
+
+    /**
+     * Here the event file is simply corrupted by virtue of being empty (0
+     * bytes)
+     */
+    @Test
+    public void testWithWithEventFileCorrupted() throws Exception {
+        assumeFalse(isWindowsEnvironment());
+        File eventFile = this.prepCorruptedEventFileTests();
+
+        final Query query = new Query(UUID.randomUUID().toString());
+        query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.ComponentID, "foo-*"));
+        query.setMaxResults(100);
+        DataOutputStream in = new DataOutputStream(new GZIPOutputStream(new FileOutputStream(eventFile)));
+        in.close();
+        final QueryResult result = repo.queryEvents(query, createUser());
+        assertEquals(10, result.getMatchingEvents().size());
+    }
+
+    private File prepCorruptedEventFileTests() throws Exception {
+        RepositoryConfiguration config = createConfiguration();
+        config.setMaxStorageCapacity(1024L * 1024L);
+        config.setMaxEventFileLife(500, TimeUnit.MILLISECONDS);
+        config.setMaxEventFileCapacity(1024L * 1024L);
+        config.setSearchableFields(new ArrayList<>(SearchableFields.getStandardFields()));
+        config.setDesiredIndexSize(10);
+
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        String uuid = UUID.randomUUID().toString();
+        for (int i = 0; i < 20; i++) {
+            ProvenanceEventRecord record = repo.eventBuilder().fromFlowFile(mock(FlowFile.class))
+                    .setEventType(ProvenanceEventType.CREATE).setComponentId("foo-" + i).setComponentType("myComponent")
+                    .setFlowFileUUID(uuid).build();
+            repo.registerEvent(record);
+            if (i == 9) {
+                repo.waitForRollover();
+                Thread.sleep(2000L);
+            }
+        }
+        repo.waitForRollover();
+        File eventFile = new File(config.getStorageDirectories().values().iterator().next(), "10.prov.gz");
+        assertTrue(eventFile.delete());
+        return eventFile;
+    }
+
+    @Test
+    @Ignore("This test relies too much on timing of background events by using Thread.sleep().")
+    public void testIndexDirectoryRemoved() throws InterruptedException, IOException, ParseException {
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxRecordLife(5, TimeUnit.MINUTES);
+        config.setMaxStorageCapacity(1024L * 1024L);
+        config.setMaxEventFileLife(500, TimeUnit.MILLISECONDS);
+        config.setMaxEventFileCapacity(1024L * 1024L);
+        config.setSearchableFields(new ArrayList<>(SearchableFields.getStandardFields()));
+        config.setDesiredIndexSize(10); // force new index to be created for each rollover
+
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final String uuid = "00000000-0000-0000-0000-000000000000";
+        final Map<String, String> attributes = new HashMap<>();
+        attributes.put("abc", "xyz");
+        attributes.put("xyz", "abc");
+        attributes.put("filename", "file-" + uuid);
+
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+
+        for (int i = 0; i < 10; i++) {
+            attributes.put("uuid", "00000000-0000-0000-0000-00000000000" + i);
+            builder.fromFlowFile(createFlowFile(i, 3000L, attributes));
+            builder.setEventTime(10L); // make sure the events are destroyed when we call purge
+            repo.registerEvent(builder.build());
+        }
+
+        repo.waitForRollover();
+
+        Thread.sleep(2000L);
+
+        final FileFilter indexFileFilter = file -> file.getName().startsWith("index");
+        final int numIndexDirs = config.getStorageDirectories().values().iterator().next().listFiles(indexFileFilter).length;
+        assertEquals(1, numIndexDirs);
+
+        // add more records so that we will create a new index
+        final long secondBatchStartTime = System.currentTimeMillis();
+        for (int i = 0; i < 10; i++) {
+            attributes.put("uuid", "00000000-0000-0000-0000-00000000001" + i);
+            builder.fromFlowFile(createFlowFile(i, 3000L, attributes));
+            builder.setEventTime(System.currentTimeMillis());
+            repo.registerEvent(builder.build());
+        }
+
+        // wait for indexing to happen
+        repo.waitForRollover();
+
+        // verify we get the results expected
+        final Query query = new Query(UUID.randomUUID().toString());
+        query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.Filename, "file-*"));
+        query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.ComponentID, "12?4"));
+        query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.TransitURI, "nifi://*"));
+        query.setMaxResults(100);
+
+        final QueryResult result = repo.queryEvents(query, createUser());
+        assertEquals(20, result.getMatchingEvents().size());
+
+        // Ensure index directories exists
+        File[] indexDirs = config.getStorageDirectories().values().iterator().next().listFiles(indexFileFilter);
+        assertEquals(2, indexDirs.length);
+
+        // expire old events and indexes
+        final long timeSinceSecondBatch = System.currentTimeMillis() - secondBatchStartTime;
+        config.setMaxRecordLife(timeSinceSecondBatch + 1000L, TimeUnit.MILLISECONDS);
+        repo.purgeOldEvents();
+        Thread.sleep(2000L);
+
+        final QueryResult newRecordSet = repo.queryEvents(query, createUser());
+        assertEquals(10, newRecordSet.getMatchingEvents().size());
+
+        // Ensure that one index directory is gone
+        indexDirs = config.getStorageDirectories().values().iterator().next().listFiles(indexFileFilter);
+        assertEquals(1, indexDirs.length);
+    }
+
+    @Test
+    public void testNotAuthorizedGetSpecificEvent() throws IOException {
+        assumeFalse(isWindowsEnvironment());
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxRecordLife(5, TimeUnit.MINUTES);
+        config.setMaxStorageCapacity(1024L * 1024L);
+        config.setMaxEventFileLife(500, TimeUnit.MILLISECONDS);
+        config.setMaxEventFileCapacity(1024L * 1024L);
+        config.setSearchableFields(new ArrayList<>(SearchableFields.getStandardFields()));
+        config.setDesiredIndexSize(10); // force new index to be created for each rollover
+
+        final AccessDeniedException expectedException = new AccessDeniedException("Unit Test - Intentionally Thrown");
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS) {
+            @Override
+            public void authorize(ProvenanceEventRecord event, NiFiUser user) {
+                throw expectedException;
+            }
+        };
+
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final String uuid = "00000000-0000-0000-0000-000000000000";
+        final Map<String, String> attributes = new HashMap<>();
+        attributes.put("abc", "xyz");
+        attributes.put("xyz", "abc");
+        attributes.put("filename", "file-" + uuid);
+
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+
+        for (int i = 0; i < 10; i++) {
+            attributes.put("uuid", "00000000-0000-0000-0000-00000000000" + i);
+            builder.fromFlowFile(createFlowFile(i, 3000L, attributes));
+            builder.setEventTime(10L); // make sure the events are destroyed when we call purge
+            repo.registerEvent(builder.build());
+        }
+
+        repo.waitForRollover();
+
+        try {
+            repo.getEvent(0L, null);
+            Assert.fail("getEvent() did not throw an Exception");
+        } catch (final Exception e) {
+            Assert.assertSame(expectedException, e);
+        }
+    }
+
+    @Test
+    public void testNotAuthorizedGetEventRange() throws IOException {
+        assumeFalse(isWindowsEnvironment());
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxRecordLife(5, TimeUnit.MINUTES);
+        config.setMaxStorageCapacity(1024L * 1024L);
+        config.setMaxEventFileLife(500, TimeUnit.MILLISECONDS);
+        config.setMaxEventFileCapacity(1024L * 1024L);
+        config.setSearchableFields(new ArrayList<>(SearchableFields.getStandardFields()));
+        config.setDesiredIndexSize(10); // force new index to be created for each rollover
+
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS) {
+            @Override
+            public boolean isAuthorized(ProvenanceEventRecord event, NiFiUser user) {
+                return event.getEventId() > 2;
+            }
+        };
+
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final String uuid = "00000000-0000-0000-0000-000000000000";
+        final Map<String, String> attributes = new HashMap<>();
+        attributes.put("abc", "xyz");
+        attributes.put("xyz", "abc");
+        attributes.put("filename", "file-" + uuid);
+
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+
+        for (int i = 0; i < 10; i++) {
+            attributes.put("uuid", "00000000-0000-0000-0000-00000000000" + i);
+            builder.fromFlowFile(createFlowFile(i, 3000L, attributes));
+            builder.setEventTime(10L); // make sure the events are destroyed when we call purge
+            repo.registerEvent(builder.build());
+        }
+
+        repo.waitForRollover();
+
+        final List<ProvenanceEventRecord> events = repo.getEvents(0L, 10, null);
+
+        // Ensure that we gets events with ID's 3 through 10.
+        assertEquals(7, events.size());
+        final List<Long> eventIds = events.stream().map(event -> event.getEventId()).sorted().collect(Collectors.toList());
+        for (int i = 0; i < 7; i++) {
+            Assert.assertEquals(i + 3, eventIds.get(i).intValue());
+        }
+    }
+
+    @Test(timeout = 10000)
+    public void testNotAuthorizedQuery() throws IOException, InterruptedException {
+        assumeFalse(isWindowsEnvironment());
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxRecordLife(5, TimeUnit.MINUTES);
+        config.setMaxStorageCapacity(1024L * 1024L);
+        config.setMaxEventFileLife(500, TimeUnit.MILLISECONDS);
+        config.setMaxEventFileCapacity(1024L * 1024L);
+        config.setSearchableFields(new ArrayList<>(SearchableFields.getStandardFields()));
+        config.setDesiredIndexSize(10); // force new index to be created for each rollover
+
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS) {
+            @Override
+            public boolean isAuthorized(ProvenanceEventRecord event, NiFiUser user) {
+                return event.getEventId() > 2;
+            }
+        };
+
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final String uuid = "00000000-0000-0000-0000-000000000000";
+        final Map<String, String> attributes = new HashMap<>();
+        attributes.put("abc", "xyz");
+        attributes.put("xyz", "abc");
+        attributes.put("filename", "file-" + uuid);
+
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+
+        for (int i = 0; i < 10; i++) {
+            attributes.put("uuid", "00000000-0000-0000-0000-00000000000" + i);
+            builder.fromFlowFile(createFlowFile(i, 3000L, attributes));
+            builder.setEventTime(10L); // make sure the events are destroyed when we call purge
+            repo.registerEvent(builder.build());
+        }
+
+        repo.waitForRollover();
+
+        final Query query = new Query("1234");
+        query.addSearchTerm(SearchTerms.newSearchTerm(SearchableFields.ComponentID, "1234"));
+        final QuerySubmission submission = repo.submitQuery(query, createUser());
+
+        final QueryResult result = submission.getResult();
+        while (!result.isFinished()) {
+            Thread.sleep(100L);
+        }
+
+        // Ensure that we gets events with ID's 3 through 10.
+        final List<ProvenanceEventRecord> events = result.getMatchingEvents();
+        assertEquals(7, events.size());
+        final List<Long> eventIds = events.stream().map(event -> event.getEventId()).sorted().collect(Collectors.toList());
+        for (int i = 0; i < 7; i++) {
+            Assert.assertEquals(i + 3, eventIds.get(i).intValue());
+        }
+    }
+
+    @Test(timeout = 1000000)
+    public void testNotAuthorizedLineage() throws IOException, InterruptedException {
+        assumeFalse(isWindowsEnvironment());
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxRecordLife(5, TimeUnit.MINUTES);
+        config.setMaxStorageCapacity(1024L * 1024L);
+        config.setMaxEventFileLife(500, TimeUnit.MILLISECONDS);
+        config.setMaxEventFileCapacity(1024L * 1024L);
+        config.setSearchableFields(new ArrayList<>(SearchableFields.getStandardFields()));
+        config.setDesiredIndexSize(10); // force new index to be created for each rollover
+
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS) {
+            @Override
+            public boolean isAuthorized(ProvenanceEventRecord event, NiFiUser user) {
+                return event.getEventType() != ProvenanceEventType.ATTRIBUTES_MODIFIED;
+            }
+        };
+
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final String uuid = "00000000-0000-0000-0000-000000000000";
+        final Map<String, String> attributes = new HashMap<>();
+        attributes.put("abc", "xyz");
+        attributes.put("xyz", "abc");
+        attributes.put("filename", "file-" + uuid);
+        attributes.put("uuid", uuid);
+
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+        builder.setEventTime(10L); // make sure the events are destroyed when we call purge
+
+        builder.fromFlowFile(createFlowFile(1, 3000L, attributes));
+        repo.registerEvent(builder.build());
+
+        builder.setEventType(ProvenanceEventType.CONTENT_MODIFIED);
+        builder.fromFlowFile(createFlowFile(2, 2000L, attributes));
+        repo.registerEvent(builder.build());
+
+        builder.setEventType(ProvenanceEventType.CONTENT_MODIFIED);
+        builder.fromFlowFile(createFlowFile(3, 2000L, attributes));
+        repo.registerEvent(builder.build());
+
+        builder.setEventType(ProvenanceEventType.ATTRIBUTES_MODIFIED);
+        attributes.put("new-attr", "yes");
+        builder.fromFlowFile(createFlowFile(4, 2000L, attributes));
+        repo.registerEvent(builder.build());
+
+        final Map<String, String> childAttributes = new HashMap<>(attributes);
+        childAttributes.put("uuid", "00000000-0000-0000-0000-000000000001");
+        builder.setEventType(ProvenanceEventType.FORK);
+        builder.fromFlowFile(createFlowFile(4, 2000L, attributes));
+        builder.addChildFlowFile(createFlowFile(5, 2000L, childAttributes));
+        builder.addParentFlowFile(createFlowFile(4, 2000L, attributes));
+        repo.registerEvent(builder.build());
+
+        builder.setEventType(ProvenanceEventType.ATTRIBUTES_MODIFIED);
+        builder.fromFlowFile(createFlowFile(6, 2000L, childAttributes));
+        repo.registerEvent(builder.build());
+
+        builder.setEventType(ProvenanceEventType.DROP);
+        builder.fromFlowFile(createFlowFile(6, 2000L, childAttributes));
+        repo.registerEvent(builder.build());
+
+        repo.waitForRollover();
+
+        final AsyncLineageSubmission originalLineage = repo.submitLineageComputation(uuid, createUser());
+
+        final StandardLineageResult result = originalLineage.getResult();
+        while (!result.isFinished()) {
+            Thread.sleep(100L);
+        }
+
+        final List<LineageNode> lineageNodes = result.getNodes();
+        assertEquals(6, lineageNodes.size());
+
+        assertEquals(1, lineageNodes.stream().map(node -> node.getNodeType()).filter(t -> t == LineageNodeType.FLOWFILE_NODE).count());
+        assertEquals(5, lineageNodes.stream().map(node -> node.getNodeType()).filter(t -> t == LineageNodeType.PROVENANCE_EVENT_NODE).count());
+
+        final Set<EventNode> eventNodes = lineageNodes.stream()
+                .filter(node -> node.getNodeType() == LineageNodeType.PROVENANCE_EVENT_NODE)
+                .map(node -> (EventNode) node)
+                .collect(Collectors.toSet());
+
+        final Map<ProvenanceEventType, List<EventNode>> nodesByType = eventNodes.stream().collect(Collectors.groupingBy(EventNode::getEventType));
+        assertEquals(1, nodesByType.get(ProvenanceEventType.RECEIVE).size());
+        assertEquals(2, nodesByType.get(ProvenanceEventType.CONTENT_MODIFIED).size());
+        assertEquals(1, nodesByType.get(ProvenanceEventType.FORK).size());
+
+        assertEquals(1, nodesByType.get(ProvenanceEventType.UNKNOWN).size());
+        assertNull(nodesByType.get(ProvenanceEventType.ATTRIBUTES_MODIFIED));
+
+        // Test filtering on expandChildren
+        final AsyncLineageSubmission expandChild = repo.submitExpandChildren(4L, createUser());
+        final StandardLineageResult expandChildResult = expandChild.getResult();
+        while (!expandChildResult.isFinished()) {
+            Thread.sleep(100L);
+        }
+
+        final List<LineageNode> expandChildNodes = expandChildResult.getNodes();
+        assertEquals(4, expandChildNodes.size());
+
+        assertEquals(1, expandChildNodes.stream().map(node -> node.getNodeType()).filter(t -> t == LineageNodeType.FLOWFILE_NODE).count());
+        assertEquals(3, expandChildNodes.stream().map(node -> node.getNodeType()).filter(t -> t == LineageNodeType.PROVENANCE_EVENT_NODE).count());
+
+        final Set<EventNode> childEventNodes = expandChildNodes.stream()
+                .filter(node -> node.getNodeType() == LineageNodeType.PROVENANCE_EVENT_NODE)
+                .map(node -> (EventNode) node)
+                .collect(Collectors.toSet());
+
+        final Map<ProvenanceEventType, List<EventNode>> childNodesByType = childEventNodes.stream().collect(Collectors.groupingBy(EventNode::getEventType));
+        assertEquals(1, childNodesByType.get(ProvenanceEventType.FORK).size());
+        assertEquals(1, childNodesByType.get(ProvenanceEventType.DROP).size());
+        assertEquals(1, childNodesByType.get(ProvenanceEventType.UNKNOWN).size());
+        assertNull(childNodesByType.get(ProvenanceEventType.ATTRIBUTES_MODIFIED));
+    }
+
+    @Test
+    public void testBackPressure() throws IOException, InterruptedException {
+        assumeFalse(isWindowsEnvironment());
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxEventFileCapacity(1L); // force rollover on each record.
+        config.setJournalCount(1);
+
+        final AtomicInteger journalCountRef = new AtomicInteger(0);
+
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS) {
+            @Override
+            protected int getJournalCount() {
+                return journalCountRef.get();
+            }
+        };
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final Map<String, String> attributes = new HashMap<>();
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        attributes.put("uuid", UUID.randomUUID().toString());
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+
+        // ensure that we can register the events.
+        for (int i = 0; i < 10; i++) {
+            builder.fromFlowFile(createFlowFile(i, 3000L, attributes));
+            attributes.put("uuid", "00000000-0000-0000-0000-00000000000" + i);
+            repo.registerEvent(builder.build());
+        }
+
+        // set number of journals to 6 so that we will block.
+        journalCountRef.set(6);
+
+        final AtomicLong threadNanos = new AtomicLong(0L);
+        final Thread t = new Thread(new Runnable() {
+            @Override
+            public void run() {
+                final long start = System.nanoTime();
+                builder.fromFlowFile(createFlowFile(13, 3000L, attributes));
+                attributes.put("uuid", "00000000-0000-0000-0000-00000000000" + 13);
+                repo.registerEvent(builder.build());
+                threadNanos.set(System.nanoTime() - start);
+            }
+        });
+        t.start();
+
+        Thread.sleep(1500L);
+
+        journalCountRef.set(1);
+        t.join();
+
+        final int threadMillis = (int) TimeUnit.NANOSECONDS.toMillis(threadNanos.get());
+        assertTrue(threadMillis > 1200); // use 1200 to account for the fact that the timing is not exact
+
+        builder.fromFlowFile(createFlowFile(15, 3000L, attributes));
+        attributes.put("uuid", "00000000-0000-0000-0000-00000000000" + 15);
+        repo.registerEvent(builder.build());
+
+        Thread.sleep(3000L);
+    }
+
+    @Test
+    public void testTextualQuery() throws InterruptedException, IOException, ParseException {
+        assumeFalse(isWindowsEnvironment());
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxEventFileLife(500, TimeUnit.MILLISECONDS);
+        config.setSearchableFields(new ArrayList<>(SearchableFields.getStandardFields()));
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final String uuid = "00000000-0000-0000-0000-000000000000";
+        final Map<String, String> attributes = new HashMap<>();
+        attributes.put("abc", "xyz");
+        attributes.put("xyz", "abc");
+        attributes.put("filename", "file-unnamed");
+
+        final long now = System.currentTimeMillis();
+
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(now - TimeUnit.MILLISECONDS.convert(30, TimeUnit.SECONDS));
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        attributes.put("uuid", uuid);
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+
+        for (int i = 0; i < 10; i++) {
+            if (i > 5) {
+                attributes.put("filename", "file-" + i);
+                builder.setEventTime(System.currentTimeMillis());
+            }
+            builder.fromFlowFile(createFlowFile(i, 3000L, attributes));
+            attributes.put("uuid", "00000000-0000-0000-0000-00000000000" + i);
+            repo.registerEvent(builder.build());
+        }
+
+        repo.waitForRollover();
+
+        final IndexConfiguration indexConfig = new IndexConfiguration(config);
+        final List<File> indexDirs = indexConfig.getIndexDirectories();
+
+        final String query = "uuid:00000000-0000-0000-0000-0000000000* AND NOT filename:file-?";
+        final List<Document> results = runQuery(indexDirs.get(0), new ArrayList<>(config.getStorageDirectories().values()), query);
+
+        assertEquals(6, results.size());
+    }
+
+    private List<Document> runQuery(final File indexDirectory, final List<File> storageDirs, final String query) throws IOException, ParseException {
+        assumeFalse(isWindowsEnvironment());
+        try (final DirectoryReader directoryReader = DirectoryReader.open(FSDirectory.open(indexDirectory))) {
+            final IndexSearcher searcher = new IndexSearcher(directoryReader);
+
+            final Analyzer analyzer = new SimpleAnalyzer();
+            final org.apache.lucene.search.Query luceneQuery = new QueryParser("uuid", analyzer).parse(query);
+
+            final Query q = new Query("");
+            q.setMaxResults(1000);
+            final TopDocs topDocs = searcher.search(luceneQuery, 1000);
+
+            final List<Document> docs = new ArrayList<>();
+            for (final ScoreDoc scoreDoc : topDocs.scoreDocs) {
+                final int docId = scoreDoc.doc;
+                final Document d = directoryReader.document(docId);
+                docs.add(d);
+            }
+
+            return docs;
+        }
+    }
+
+    private long checkJournalRecords(final File storageDir, final Boolean exact) throws IOException {
+        File[] storagefiles = storageDir.listFiles();
+        long counter = 0;
+        assertNotNull(storagefiles);
+        for (final File file : storagefiles) {
+            if (file.isFile()) {
+                try (RecordReader reader = RecordReaders.newRecordReader(file, null, 2048)) {
+                    ProvenanceEventRecord r;
+                    ProvenanceEventRecord last = null;
+                    while ((r = reader.nextRecord()) != null) {
+                        if (exact) {
+                            assertTrue(counter++ == r.getEventId());
+                        } else {
+                            assertTrue(counter++ <= r.getEventId());
+                        }
+                    }
+                }
+            }
+        }
+        return counter;
+    }
+
+    @Test
+    public void testMergeJournals() throws IOException, InterruptedException {
+        assumeFalse(isWindowsEnvironment());
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxEventFileLife(3, TimeUnit.SECONDS);
+        repo = new PersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        repo.initialize(getEventReporter(), null, null, IdentifierLookup.EMPTY);
+
+        final Map<String, String> attributes = new HashMap<>();
+
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        attributes.put("uuid", "12345678-0000-0000-0000-012345678912");
+        builder.fromFlowFile(createFlowFile(3L, 3000L, attributes));
+        builder.setComponentId("1234");
+        builder.setComponentType("dummy processor");
+
+        final ProvenanceEventRecord record = builder.build();
+
+        final ExecutorService exec = Executors.newFixedThreadPool(10);
+        for (int i = 0; i < 10000; i++) {
+            exec.submit(new Runnable() {
+                @Override
+                public void run() {
+                    repo.registerEvent(record);
+                }
+            });
+        }
+
+        repo.waitForRollover();
+
+        final File storageDir = config.getStorageDirectories().values().iterator().next();
+        long counter = 0;
+        for (final File file : storageDir.listFiles()) {
+            if (file.isFile()) {
+
+                try (RecordReader reader = RecordReaders.newRecordReader(file, null, 2048)) {
+                    ProvenanceEventRecord r = null;
+
+                    while ((r = reader.nextRecord()) != null) {
+                        assertEquals(counter++, r.getEventId());
+                    }
+                }
+            }
+        }
+
+        assertEquals(10000, counter);
+    }
+
+    private void corruptJournalFile(final File journalFile, final int position,
+            final String original, final String replacement) throws IOException {
+        final int journalLength = Long.valueOf(journalFile.length()).intValue();
+        final byte[] origBytes = original.getBytes();
+        final byte[] replBytes = replacement.getBytes();
+        FileInputStream journalIn = new FileInputStream(journalFile);
+        byte[] content = new byte[journalLength];
+        assertEquals(journalLength, journalIn.read(content, 0, journalLength));
+        journalIn.close();
+        assertEquals(original, new String(Arrays.copyOfRange(content, position, position + origBytes.length)));
+        System.arraycopy(replBytes, 0, content, position, replBytes.length);
+        FileOutputStream journalOut = new FileOutputStream(journalFile);
+        journalOut.write(content, 0, journalLength);
+        journalOut.flush();
+        journalOut.close();
+    }
+
+    @Test
+    public void testMergeJournalsBadFirstRecord() throws IOException, InterruptedException {
+        assumeFalse(isWindowsEnvironment());
+        final RepositoryConfiguration config = createConfiguration();
+        config.setMaxEventFileLife(3, TimeUnit.SECONDS);
+        TestablePersistentProvenanceRepository testRepo = new TestablePersistentProvenanceRepository(config, DEFAULT_ROLLOVER_MILLIS);
+        testRepo.initialize(getEventReporter(), null, null, null);
+
+        final Map<String, String> attributes = new HashMap<>();
+
+        final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
+        builder.setEventTime(System.currentTimeMillis());
+        builder.setEventType(ProvenanceEventType.RECEIVE);
+        builder.setTransitUri("nifi://unit-test");
+        attributes.put("uuid", "12345678-0000-0000-0000-01234567891

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