[GitHub] [nifi] mattyb149 commented on a change in pull request #4646: NIFI-6047 Add DeduplicateRecords (combines 6047 and 6014)

[GitBox <gi...@apache.org>]

mattyb149 commented on a change in pull request #4646:
URL: https://github.com/apache/nifi/pull/4646#discussion_r528945585



##########
File path: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/DeduplicateRecords.java
##########
@@ -0,0 +1,675 @@
+/*
+ * 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.processors.standard;
+
+import com.google.common.base.Joiner;
+import com.google.common.hash.BloomFilter;
+import com.google.common.hash.Funnels;
+import org.apache.commons.codec.binary.Hex;
+import org.apache.commons.codec.digest.DigestUtils;
+import org.apache.commons.codec.digest.MessageDigestAlgorithms;
+import org.apache.nifi.annotation.behavior.DynamicProperty;
+import org.apache.nifi.annotation.behavior.EventDriven;
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.InputRequirement.Requirement;
+import org.apache.nifi.annotation.behavior.SupportsBatching;
+import org.apache.nifi.annotation.behavior.SystemResource;
+import org.apache.nifi.annotation.behavior.SystemResourceConsideration;
+import org.apache.nifi.annotation.behavior.WritesAttribute;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.SeeAlso;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.lifecycle.OnScheduled;
+import org.apache.nifi.components.AllowableValue;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.components.PropertyValue;
+import org.apache.nifi.components.ValidationContext;
+import org.apache.nifi.components.ValidationResult;
+import org.apache.nifi.components.Validator;
+import org.apache.nifi.distributed.cache.client.DistributedMapCacheClient;
+import org.apache.nifi.distributed.cache.client.Serializer;
+import org.apache.nifi.expression.ExpressionLanguageScope;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.flowfile.attributes.CoreAttributes;
+import org.apache.nifi.logging.ComponentLog;
+import org.apache.nifi.processor.AbstractProcessor;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.ProcessorInitializationContext;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.util.StandardValidators;
+import org.apache.nifi.record.path.FieldValue;
+import org.apache.nifi.record.path.RecordPath;
+import org.apache.nifi.record.path.RecordPathResult;
+import org.apache.nifi.record.path.util.RecordPathCache;
+import org.apache.nifi.record.path.validation.RecordPathPropertyNameValidator;
+import org.apache.nifi.record.path.validation.RecordPathValidator;
+import org.apache.nifi.serialization.RecordReader;
+import org.apache.nifi.serialization.RecordReaderFactory;
+import org.apache.nifi.serialization.RecordSetWriter;
+import org.apache.nifi.serialization.RecordSetWriterFactory;
+import org.apache.nifi.serialization.WriteResult;
+import org.apache.nifi.serialization.record.Record;
+import org.apache.nifi.serialization.record.RecordSchema;
+import org.apache.nifi.serialization.record.util.DataTypeUtils;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.Serializable;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+import java.util.ArrayList;
+import java.util.Collection;
+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.stream.Collectors;
+
+import static java.util.stream.Collectors.toList;
+import static org.apache.commons.codec.binary.StringUtils.getBytesUtf8;
+
+@EventDriven
+@SupportsBatching
+@InputRequirement(Requirement.INPUT_REQUIRED)
+@SystemResourceConsideration(resource = SystemResource.MEMORY,
+    description = "The HashSet filter type will grow memory space proportionate to the number of unique records processed. " +
+        "The BloomFilter type will use constant memory regardless of the number of records processed.")
+@Tags({"text", "record", "update", "change", "replace", "modify", "distinct", "unique",
+    "filter", "hash", "dupe", "duplicate", "dedupe"})
+@CapabilityDescription("This processor attempts to deduplicate a record set in memory using either a hashset or a bloom filter. " +
+        "It operates on a per-file basis rather than across an entire data set that spans multiple files.")
+@WritesAttribute(attribute = "record.count", description = "The number of records processed.")
+@DynamicProperty(
+    name = "RecordPath",
+    value = "An expression language statement used to determine how the RecordPath is resolved. " +
+            "The following variables are availble: ${field.name}, ${field.value}, ${field.type}",

Review comment:
       Minor typo in `available`

##########
File path: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/DeduplicateRecords.java
##########
@@ -0,0 +1,675 @@
+/*
+ * 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.processors.standard;
+
+import com.google.common.base.Joiner;
+import com.google.common.hash.BloomFilter;
+import com.google.common.hash.Funnels;
+import org.apache.commons.codec.binary.Hex;
+import org.apache.commons.codec.digest.DigestUtils;
+import org.apache.commons.codec.digest.MessageDigestAlgorithms;
+import org.apache.nifi.annotation.behavior.DynamicProperty;
+import org.apache.nifi.annotation.behavior.EventDriven;
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.InputRequirement.Requirement;
+import org.apache.nifi.annotation.behavior.SupportsBatching;
+import org.apache.nifi.annotation.behavior.SystemResource;
+import org.apache.nifi.annotation.behavior.SystemResourceConsideration;
+import org.apache.nifi.annotation.behavior.WritesAttribute;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.SeeAlso;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.lifecycle.OnScheduled;
+import org.apache.nifi.components.AllowableValue;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.components.PropertyValue;
+import org.apache.nifi.components.ValidationContext;
+import org.apache.nifi.components.ValidationResult;
+import org.apache.nifi.components.Validator;
+import org.apache.nifi.distributed.cache.client.DistributedMapCacheClient;
+import org.apache.nifi.distributed.cache.client.Serializer;
+import org.apache.nifi.expression.ExpressionLanguageScope;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.flowfile.attributes.CoreAttributes;
+import org.apache.nifi.logging.ComponentLog;
+import org.apache.nifi.processor.AbstractProcessor;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.ProcessorInitializationContext;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.util.StandardValidators;
+import org.apache.nifi.record.path.FieldValue;
+import org.apache.nifi.record.path.RecordPath;
+import org.apache.nifi.record.path.RecordPathResult;
+import org.apache.nifi.record.path.util.RecordPathCache;
+import org.apache.nifi.record.path.validation.RecordPathPropertyNameValidator;
+import org.apache.nifi.record.path.validation.RecordPathValidator;
+import org.apache.nifi.serialization.RecordReader;
+import org.apache.nifi.serialization.RecordReaderFactory;
+import org.apache.nifi.serialization.RecordSetWriter;
+import org.apache.nifi.serialization.RecordSetWriterFactory;
+import org.apache.nifi.serialization.WriteResult;
+import org.apache.nifi.serialization.record.Record;
+import org.apache.nifi.serialization.record.RecordSchema;
+import org.apache.nifi.serialization.record.util.DataTypeUtils;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.Serializable;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+import java.util.ArrayList;
+import java.util.Collection;
+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.stream.Collectors;
+
+import static java.util.stream.Collectors.toList;
+import static org.apache.commons.codec.binary.StringUtils.getBytesUtf8;
+
+@EventDriven
+@SupportsBatching
+@InputRequirement(Requirement.INPUT_REQUIRED)
+@SystemResourceConsideration(resource = SystemResource.MEMORY,
+    description = "The HashSet filter type will grow memory space proportionate to the number of unique records processed. " +
+        "The BloomFilter type will use constant memory regardless of the number of records processed.")
+@Tags({"text", "record", "update", "change", "replace", "modify", "distinct", "unique",
+    "filter", "hash", "dupe", "duplicate", "dedupe"})
+@CapabilityDescription("This processor attempts to deduplicate a record set in memory using either a hashset or a bloom filter. " +
+        "It operates on a per-file basis rather than across an entire data set that spans multiple files.")
+@WritesAttribute(attribute = "record.count", description = "The number of records processed.")
+@DynamicProperty(
+    name = "RecordPath",
+    value = "An expression language statement used to determine how the RecordPath is resolved. " +
+            "The following variables are availble: ${field.name}, ${field.value}, ${field.type}",
+    description = "The name of each user-defined property must be a valid RecordPath.")
+@SeeAlso(classNames = {
+    "org.apache.nifi.distributed.cache.client.DistributedMapCacheClientService",
+    "org.apache.nifi.distributed.cache.server.map.DistributedMapCacheServer",
+    "org.apache.nifi.processors.standard.DetectDuplicate"
+})
+public class DeduplicateRecords extends AbstractProcessor {
+
+    private static final String FIELD_NAME = "field.name";
+    private static final String FIELD_VALUE = "field.value";
+    private static final String FIELD_TYPE = "field.type";
+
+    private volatile RecordPathCache recordPathCache;
+    private volatile List<String> recordPaths;
+
+    // VALUES
+
+    static final AllowableValue NONE_ALGORITHM_VALUE = new AllowableValue("none", "None",
+            "Do not use a hashing algorithm. The value of resolved RecordPaths will be combined with tildes (~) to form the unique record key. " +
+                    "This may use significantly more storage depending on the size and shape or your data.");
+    static final AllowableValue MD5_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.MD5, "MD5",
+            "The MD5 message-digest algorithm.");
+    static final AllowableValue SHA1_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.SHA_1, "SHA-1",
+            "The SHA-1 cryptographic hash algorithm.");
+    static final AllowableValue SHA256_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.SHA3_256, "SHA-256",
+            "The SHA-256 cryptographic hash algorithm.");
+    static final AllowableValue SHA512_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.SHA3_512, "SHA-512",
+            "The SHA-512 cryptographic hash algorithm.");
+
+    static final AllowableValue HASH_SET_VALUE = new AllowableValue("hash-set", "HashSet",
+            "Exactly matches records seen before with 100% accuracy at the expense of more storage usage. " +
+                    "Stores the filter data in a single cache entry in the distributed cache, and is loaded entirely into memory during duplicate detection. " +
+                    "This filter is preferred for small to medium data sets and offers high performance  loaded into memory when this processor is running.");
+    static final AllowableValue BLOOM_FILTER_VALUE = new AllowableValue("bloom-filter", "BloomFilter",
+            "Space-efficient data structure ideal for large data sets using probability to determine if a record was seen previously. " +
+                    "False positive matches are possible, but false negatives are not – in other words, a query returns either \"possibly in the set\" or \"definitely not in the set\". " +
+                    "You should use this option if the FlowFile content is large and you can tolerate some duplication in the data. Uses constant storage space regardless of the record set size.");
+
+    // PROPERTIES
+
+    static final PropertyDescriptor RECORD_READER = new PropertyDescriptor.Builder()
+            .name("record-reader")
+            .displayName("Record Reader")
+            .description("Specifies the Controller Service to use for reading incoming data")
+            .identifiesControllerService(RecordReaderFactory.class)
+            .required(true)
+            .build();
+
+    static final PropertyDescriptor RECORD_WRITER = new PropertyDescriptor.Builder()
+            .name("record-writer")
+            .displayName("Record Writer")
+            .description("Specifies the Controller Service to use for writing out the records")
+            .identifiesControllerService(RecordSetWriterFactory.class)
+            .required(true)
+            .build();
+
+    static final AllowableValue OPTION_SINGLE_FILE = new AllowableValue("single", "Single File");
+    static final AllowableValue OPTION_DATA_LAKE = new AllowableValue("dataLake", "Data Lake");
+
+    static final PropertyDescriptor DEDUPLICATION_STRATEGY = new PropertyDescriptor.Builder()
+            .name("deduplication-strategy")
+            .displayName("Deduplication Strategy")
+            .description("The strategy to use for detecting and isolating duplicate records. The option for doing it " +
+                    "across a single data file will operate in memory, whereas the one for going across the enter data lake " +
+                    "will require a distributed map cache.")
+            .allowableValues(OPTION_SINGLE_FILE, OPTION_DATA_LAKE)
+            .defaultValue(OPTION_SINGLE_FILE.getValue())
+            .required(true)
+            .build();
+
+    static final PropertyDescriptor DISTRIBUTED_MAP_CACHE = new PropertyDescriptor.Builder()
+            .name("distributed-map-cache")
+            .displayName("Distributed Map Cache client")
+            .description("This configuration is required when the deduplication strategy is set to 'across data lake.' The map " +

Review comment:
       Is this ignored when using the Single File strategy? If so, this has a dependency on the `DEDUPLICATION_STRATEGY` value of `OPTION_DATA_LAKE`, now that dependent properties are supported, you can add a `dependsOn` method here.

##########
File path: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/DeduplicateRecords.java
##########
@@ -0,0 +1,675 @@
+/*
+ * 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.processors.standard;
+
+import com.google.common.base.Joiner;
+import com.google.common.hash.BloomFilter;
+import com.google.common.hash.Funnels;
+import org.apache.commons.codec.binary.Hex;
+import org.apache.commons.codec.digest.DigestUtils;
+import org.apache.commons.codec.digest.MessageDigestAlgorithms;
+import org.apache.nifi.annotation.behavior.DynamicProperty;
+import org.apache.nifi.annotation.behavior.EventDriven;
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.InputRequirement.Requirement;
+import org.apache.nifi.annotation.behavior.SupportsBatching;
+import org.apache.nifi.annotation.behavior.SystemResource;
+import org.apache.nifi.annotation.behavior.SystemResourceConsideration;
+import org.apache.nifi.annotation.behavior.WritesAttribute;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.SeeAlso;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.lifecycle.OnScheduled;
+import org.apache.nifi.components.AllowableValue;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.components.PropertyValue;
+import org.apache.nifi.components.ValidationContext;
+import org.apache.nifi.components.ValidationResult;
+import org.apache.nifi.components.Validator;
+import org.apache.nifi.distributed.cache.client.DistributedMapCacheClient;
+import org.apache.nifi.distributed.cache.client.Serializer;
+import org.apache.nifi.expression.ExpressionLanguageScope;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.flowfile.attributes.CoreAttributes;
+import org.apache.nifi.logging.ComponentLog;
+import org.apache.nifi.processor.AbstractProcessor;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.ProcessorInitializationContext;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.util.StandardValidators;
+import org.apache.nifi.record.path.FieldValue;
+import org.apache.nifi.record.path.RecordPath;
+import org.apache.nifi.record.path.RecordPathResult;
+import org.apache.nifi.record.path.util.RecordPathCache;
+import org.apache.nifi.record.path.validation.RecordPathPropertyNameValidator;
+import org.apache.nifi.record.path.validation.RecordPathValidator;
+import org.apache.nifi.serialization.RecordReader;
+import org.apache.nifi.serialization.RecordReaderFactory;
+import org.apache.nifi.serialization.RecordSetWriter;
+import org.apache.nifi.serialization.RecordSetWriterFactory;
+import org.apache.nifi.serialization.WriteResult;
+import org.apache.nifi.serialization.record.Record;
+import org.apache.nifi.serialization.record.RecordSchema;
+import org.apache.nifi.serialization.record.util.DataTypeUtils;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.Serializable;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+import java.util.ArrayList;
+import java.util.Collection;
+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.stream.Collectors;
+
+import static java.util.stream.Collectors.toList;
+import static org.apache.commons.codec.binary.StringUtils.getBytesUtf8;
+
+@EventDriven
+@SupportsBatching
+@InputRequirement(Requirement.INPUT_REQUIRED)
+@SystemResourceConsideration(resource = SystemResource.MEMORY,

Review comment:
       Can the hashing be CPU-intensive?

##########
File path: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/DeduplicateRecords.java
##########
@@ -0,0 +1,675 @@
+/*
+ * 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.processors.standard;
+
+import com.google.common.base.Joiner;
+import com.google.common.hash.BloomFilter;
+import com.google.common.hash.Funnels;
+import org.apache.commons.codec.binary.Hex;
+import org.apache.commons.codec.digest.DigestUtils;
+import org.apache.commons.codec.digest.MessageDigestAlgorithms;
+import org.apache.nifi.annotation.behavior.DynamicProperty;
+import org.apache.nifi.annotation.behavior.EventDriven;
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.InputRequirement.Requirement;
+import org.apache.nifi.annotation.behavior.SupportsBatching;
+import org.apache.nifi.annotation.behavior.SystemResource;
+import org.apache.nifi.annotation.behavior.SystemResourceConsideration;
+import org.apache.nifi.annotation.behavior.WritesAttribute;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.SeeAlso;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.lifecycle.OnScheduled;
+import org.apache.nifi.components.AllowableValue;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.components.PropertyValue;
+import org.apache.nifi.components.ValidationContext;
+import org.apache.nifi.components.ValidationResult;
+import org.apache.nifi.components.Validator;
+import org.apache.nifi.distributed.cache.client.DistributedMapCacheClient;
+import org.apache.nifi.distributed.cache.client.Serializer;
+import org.apache.nifi.expression.ExpressionLanguageScope;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.flowfile.attributes.CoreAttributes;
+import org.apache.nifi.logging.ComponentLog;
+import org.apache.nifi.processor.AbstractProcessor;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.ProcessorInitializationContext;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.util.StandardValidators;
+import org.apache.nifi.record.path.FieldValue;
+import org.apache.nifi.record.path.RecordPath;
+import org.apache.nifi.record.path.RecordPathResult;
+import org.apache.nifi.record.path.util.RecordPathCache;
+import org.apache.nifi.record.path.validation.RecordPathPropertyNameValidator;
+import org.apache.nifi.record.path.validation.RecordPathValidator;
+import org.apache.nifi.serialization.RecordReader;
+import org.apache.nifi.serialization.RecordReaderFactory;
+import org.apache.nifi.serialization.RecordSetWriter;
+import org.apache.nifi.serialization.RecordSetWriterFactory;
+import org.apache.nifi.serialization.WriteResult;
+import org.apache.nifi.serialization.record.Record;
+import org.apache.nifi.serialization.record.RecordSchema;
+import org.apache.nifi.serialization.record.util.DataTypeUtils;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.Serializable;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+import java.util.ArrayList;
+import java.util.Collection;
+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.stream.Collectors;
+
+import static java.util.stream.Collectors.toList;
+import static org.apache.commons.codec.binary.StringUtils.getBytesUtf8;
+
+@EventDriven
+@SupportsBatching
+@InputRequirement(Requirement.INPUT_REQUIRED)
+@SystemResourceConsideration(resource = SystemResource.MEMORY,
+    description = "The HashSet filter type will grow memory space proportionate to the number of unique records processed. " +
+        "The BloomFilter type will use constant memory regardless of the number of records processed.")
+@Tags({"text", "record", "update", "change", "replace", "modify", "distinct", "unique",
+    "filter", "hash", "dupe", "duplicate", "dedupe"})
+@CapabilityDescription("This processor attempts to deduplicate a record set in memory using either a hashset or a bloom filter. " +
+        "It operates on a per-file basis rather than across an entire data set that spans multiple files.")
+@WritesAttribute(attribute = "record.count", description = "The number of records processed.")
+@DynamicProperty(
+    name = "RecordPath",
+    value = "An expression language statement used to determine how the RecordPath is resolved. " +
+            "The following variables are availble: ${field.name}, ${field.value}, ${field.type}",
+    description = "The name of each user-defined property must be a valid RecordPath.")
+@SeeAlso(classNames = {
+    "org.apache.nifi.distributed.cache.client.DistributedMapCacheClientService",
+    "org.apache.nifi.distributed.cache.server.map.DistributedMapCacheServer",
+    "org.apache.nifi.processors.standard.DetectDuplicate"
+})
+public class DeduplicateRecords extends AbstractProcessor {
+
+    private static final String FIELD_NAME = "field.name";
+    private static final String FIELD_VALUE = "field.value";
+    private static final String FIELD_TYPE = "field.type";
+
+    private volatile RecordPathCache recordPathCache;
+    private volatile List<String> recordPaths;
+
+    // VALUES
+
+    static final AllowableValue NONE_ALGORITHM_VALUE = new AllowableValue("none", "None",
+            "Do not use a hashing algorithm. The value of resolved RecordPaths will be combined with tildes (~) to form the unique record key. " +
+                    "This may use significantly more storage depending on the size and shape or your data.");
+    static final AllowableValue MD5_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.MD5, "MD5",
+            "The MD5 message-digest algorithm.");
+    static final AllowableValue SHA1_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.SHA_1, "SHA-1",
+            "The SHA-1 cryptographic hash algorithm.");
+    static final AllowableValue SHA256_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.SHA3_256, "SHA-256",
+            "The SHA-256 cryptographic hash algorithm.");
+    static final AllowableValue SHA512_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.SHA3_512, "SHA-512",
+            "The SHA-512 cryptographic hash algorithm.");
+
+    static final AllowableValue HASH_SET_VALUE = new AllowableValue("hash-set", "HashSet",
+            "Exactly matches records seen before with 100% accuracy at the expense of more storage usage. " +
+                    "Stores the filter data in a single cache entry in the distributed cache, and is loaded entirely into memory during duplicate detection. " +
+                    "This filter is preferred for small to medium data sets and offers high performance  loaded into memory when this processor is running.");
+    static final AllowableValue BLOOM_FILTER_VALUE = new AllowableValue("bloom-filter", "BloomFilter",
+            "Space-efficient data structure ideal for large data sets using probability to determine if a record was seen previously. " +
+                    "False positive matches are possible, but false negatives are not – in other words, a query returns either \"possibly in the set\" or \"definitely not in the set\". " +
+                    "You should use this option if the FlowFile content is large and you can tolerate some duplication in the data. Uses constant storage space regardless of the record set size.");
+
+    // PROPERTIES
+
+    static final PropertyDescriptor RECORD_READER = new PropertyDescriptor.Builder()
+            .name("record-reader")
+            .displayName("Record Reader")
+            .description("Specifies the Controller Service to use for reading incoming data")
+            .identifiesControllerService(RecordReaderFactory.class)
+            .required(true)
+            .build();
+
+    static final PropertyDescriptor RECORD_WRITER = new PropertyDescriptor.Builder()
+            .name("record-writer")
+            .displayName("Record Writer")
+            .description("Specifies the Controller Service to use for writing out the records")
+            .identifiesControllerService(RecordSetWriterFactory.class)
+            .required(true)
+            .build();
+
+    static final AllowableValue OPTION_SINGLE_FILE = new AllowableValue("single", "Single File");
+    static final AllowableValue OPTION_DATA_LAKE = new AllowableValue("dataLake", "Data Lake");
+
+    static final PropertyDescriptor DEDUPLICATION_STRATEGY = new PropertyDescriptor.Builder()
+            .name("deduplication-strategy")
+            .displayName("Deduplication Strategy")
+            .description("The strategy to use for detecting and isolating duplicate records. The option for doing it " +
+                    "across a single data file will operate in memory, whereas the one for going across the enter data lake " +
+                    "will require a distributed map cache.")
+            .allowableValues(OPTION_SINGLE_FILE, OPTION_DATA_LAKE)
+            .defaultValue(OPTION_SINGLE_FILE.getValue())
+            .required(true)
+            .build();
+
+    static final PropertyDescriptor DISTRIBUTED_MAP_CACHE = new PropertyDescriptor.Builder()
+            .name("distributed-map-cache")
+            .displayName("Distributed Map Cache client")
+            .description("This configuration is required when the deduplication strategy is set to 'across data lake.' The map " +
+                    "cache will be used to check a data source such as HBase or Redis for entries indicating that a record has " +
+                    "been processed before. This option requires a downstream process that uses PutDistributedMapCache to write " +
+                    "an entry to the cache data source once the record has been processed to indicate that it has been handled before.")
+            .identifiesControllerService(DistributedMapCacheClient.class)
+            .required(false)
+            .addValidator(Validator.VALID)
+            .build();
+
+    static final PropertyDescriptor CACHE_IDENTIFIER = new PropertyDescriptor.Builder()
+            .name("cache-identifier")
+            .displayName("Cache Identifier")
+            .description("This option defines a record path operation to use for defining the cache identifier. It can be used " +
+                    "in addition to the hash settings. This field will have the expression language attribute \"record.hash.value\" " +
+                    "available to it to use with it to generate the record path operation.")
+            .expressionLanguageSupported(ExpressionLanguageScope.FLOWFILE_ATTRIBUTES)
+            .required(false)
+            .addValidator(Validator.VALID)
+            .build();
+
+    static final PropertyDescriptor INCLUDE_ZERO_RECORD_FLOWFILES = new PropertyDescriptor.Builder()
+            .name("include-zero-record-flowfiles")
+            .displayName("Include Zero Record FlowFiles")
+            .description("When converting an incoming FlowFile, if the conversion results in no data, "
+                    + "this property specifies whether or not a FlowFile will be sent to the corresponding relationship")
+            .expressionLanguageSupported(ExpressionLanguageScope.NONE)
+            .allowableValues("true", "false")
+            .defaultValue("true")
+            .required(true)
+            .build();
+
+    static final PropertyDescriptor RECORD_HASHING_ALGORITHM = new PropertyDescriptor.Builder()
+            .name("record-hashing-algorithm")
+            .displayName("Record Hashing Algorithm")
+            .description("The algorithm used to hash the combined set of resolved RecordPath values for cache storage.")
+            .allowableValues(
+                    NONE_ALGORITHM_VALUE,
+                    MD5_ALGORITHM_VALUE,
+                    SHA1_ALGORITHM_VALUE,
+                    SHA256_ALGORITHM_VALUE,
+                    SHA512_ALGORITHM_VALUE
+            )
+            .defaultValue(SHA1_ALGORITHM_VALUE.getValue())
+            .expressionLanguageSupported(ExpressionLanguageScope.NONE)
+            .required(true)
+            .build();
+
+    static final PropertyDescriptor FILTER_TYPE = new PropertyDescriptor.Builder()
+            .name("filter-type")
+            .displayName("Filter Type")
+            .description("The filter used to determine whether a record has been seen before based on the matching RecordPath criteria.")
+            .allowableValues(
+                    HASH_SET_VALUE,
+                    BLOOM_FILTER_VALUE
+            )
+            .defaultValue(HASH_SET_VALUE.getValue())
+            .required(true)
+            .build();
+
+    static final PropertyDescriptor FILTER_CAPACITY_HINT = new PropertyDescriptor.Builder()
+            .name("filter-capacity-hint")
+            .displayName("Filter Capacity Hint")
+            .description("An estimation of the total number of unique records to be processed. " +
+                    "The more accurate this number is will lead to fewer false negatives on a BloomFilter.")
+            .defaultValue("25000")
+            .expressionLanguageSupported(ExpressionLanguageScope.NONE)
+            .addValidator(StandardValidators.INTEGER_VALIDATOR)
+            .required(true)
+            .build();
+
+    static final PropertyDescriptor BLOOM_FILTER_FPP = new PropertyDescriptor.Builder()
+            .name("bloom-filter-certainty")
+            .displayName("Bloom Filter Certainty")
+            .description("The desired false positive probability when using the BloomFilter type. " +
+                    "Using a value of .05 for example, guarantees a five-percent probability that the result is a false positive. " +
+                    "The closer to 1 this value is set, the more precise the result at the expense of more storage space utilization.")
+            .defaultValue("0.10")
+            .expressionLanguageSupported(ExpressionLanguageScope.NONE)
+            .addValidator(StandardValidators.NUMBER_VALIDATOR)
+            .required(false)
+            .build();
+
+
+    // RELATIONSHIPS
+
+    static final Relationship REL_DUPLICATE = new Relationship.Builder()
+            .name("duplicate")
+            .description("Records detected as duplicates in the FlowFile content will be routed to this relationship")
+            .build();
+
+    static final Relationship REL_NON_DUPLICATE = new Relationship.Builder()
+            .name("non-duplicate")
+            .description("If the record was not found in the cache, it will be routed to this relationship")
+            .build();
+
+    static final Relationship REL_ORIGINAL = new Relationship.Builder()
+            .name("original")
+            .description("The original input FlowFile is sent to this relationship unless there is a fatal error in the processing.")
+            .build();
+
+    static final Relationship REL_FAILURE = new Relationship.Builder()
+            .name("failure")
+            .description("If unable to communicate with the cache, the FlowFile will be penalized and routed to this relationship")
+            .build();
+
+    private List<PropertyDescriptor> descriptors;
+
+    private Set<Relationship> relationships;
+
+    @Override
+    protected void init(final ProcessorInitializationContext context) {
+        final List<PropertyDescriptor> descriptors = new ArrayList<>();
+        descriptors.add(DEDUPLICATION_STRATEGY);
+        descriptors.add(DISTRIBUTED_MAP_CACHE);
+        descriptors.add(CACHE_IDENTIFIER);
+        descriptors.add(RECORD_READER);
+        descriptors.add(RECORD_WRITER);
+        descriptors.add(INCLUDE_ZERO_RECORD_FLOWFILES);
+        descriptors.add(RECORD_HASHING_ALGORITHM);
+        descriptors.add(FILTER_TYPE);
+        descriptors.add(FILTER_CAPACITY_HINT);
+        descriptors.add(BLOOM_FILTER_FPP);
+        this.descriptors = Collections.unmodifiableList(descriptors);
+
+        final Set<Relationship> relationships = new HashSet<>();
+        relationships.add(REL_DUPLICATE);
+        relationships.add(REL_NON_DUPLICATE);
+        relationships.add(REL_ORIGINAL);
+        relationships.add(REL_FAILURE);
+        this.relationships = Collections.unmodifiableSet(relationships);
+    }
+
+    @Override
+    public Set<Relationship> getRelationships() {
+        return this.relationships;
+    }
+
+    @Override
+    public final List<PropertyDescriptor> getSupportedPropertyDescriptors() {
+        return descriptors;
+    }
+
+    @Override
+    protected PropertyDescriptor getSupportedDynamicPropertyDescriptor(final String propertyDescriptorName) {
+        return new PropertyDescriptor.Builder()
+                .name(propertyDescriptorName)
+                .description("Specifies a value to use from the record that matches the RecordPath: '" +
+                        propertyDescriptorName + "' which is used together with other specified " +
+                        "record path values to determine the uniqueness of a record. " +
+                        "Expression Language may reference variables 'field.name', 'field.type', and 'field.value' " +
+                        "to access information about the field and the value of the field being evaluated.")
+                .required(false)
+                .dynamic(true)
+                .expressionLanguageSupported(ExpressionLanguageScope.FLOWFILE_ATTRIBUTES)
+                .addValidator(new RecordPathPropertyNameValidator())
+                .build();
+    }
+
+    @Override
+    protected Collection<ValidationResult> customValidate(final ValidationContext context) {
+        RecordPathValidator recordPathValidator = new RecordPathValidator();
+        final List<ValidationResult> validationResults = context.getProperties().keySet().stream()
+                .filter(PropertyDescriptor::isDynamic)
+                .map(property -> recordPathValidator.validate(
+                        "User-defined Properties",
+                        property.getName(),
+                        context
+                )).collect(Collectors.toList());
+
+        boolean useSingleFile = context.getProperty(DEDUPLICATION_STRATEGY).getValue().equals(OPTION_SINGLE_FILE.getValue());
+
+        if (useSingleFile && context.getProperty(BLOOM_FILTER_FPP).isSet()) {
+            final double falsePositiveProbability = context.getProperty(BLOOM_FILTER_FPP).asDouble();
+            if (falsePositiveProbability < 0 || falsePositiveProbability > 1) {
+                validationResults.add(
+                        new ValidationResult.Builder()
+                                .subject(BLOOM_FILTER_FPP.getName() + " out of range.")
+                                .input(String.valueOf(falsePositiveProbability))
+                                .explanation("Valid values are 0.0 - 1.0 inclusive")
+                                .valid(false).build());
+            }
+        } else if (!useSingleFile) {
+            if (!context.getProperty(DISTRIBUTED_MAP_CACHE).isSet()) {
+                validationResults.add(new ValidationResult.Builder()
+                        .subject(DISTRIBUTED_MAP_CACHE.getName())
+                        .explanation("Data lake-level deduplication was chosen, but a distributed map cache client was " +
+                                "not configured")
+                        .valid(false).build());
+            }
+        }
+
+        return validationResults;
+    }
+
+    private DistributedMapCacheClient mapCacheClient;
+    private RecordReaderFactory readerFactory;
+    private RecordSetWriterFactory writerFactory;
+
+    private boolean useInMemoryStrategy;
+
+    @OnScheduled
+    public void compileRecordPaths(final ProcessContext context) {
+        final List<String> recordPaths = new ArrayList<>();
+
+        recordPaths.addAll(context.getProperties().keySet().stream()
+                .filter(PropertyDescriptor::isDynamic)
+                .map(PropertyDescriptor::getName)
+                .collect(toList()));
+
+        recordPathCache = new RecordPathCache(recordPaths.size());
+        this.recordPaths = recordPaths;
+
+        if (context.getProperty(DISTRIBUTED_MAP_CACHE).isSet()) {
+            mapCacheClient = context.getProperty(DISTRIBUTED_MAP_CACHE).asControllerService(DistributedMapCacheClient.class);
+        }
+
+        readerFactory = context.getProperty(RECORD_READER).asControllerService(RecordReaderFactory.class);
+        writerFactory = context.getProperty(RECORD_WRITER).asControllerService(RecordSetWriterFactory.class);
+
+        useInMemoryStrategy = context.getProperty(DEDUPLICATION_STRATEGY).getValue().equals(OPTION_SINGLE_FILE.getValue());
+    }
+
+    private FilterWrapper getFilter(ProcessContext context) {
+        if (useInMemoryStrategy) {
+            boolean useHashSet = context.getProperty(FILTER_TYPE).getValue()
+                    .equals(context.getProperty(HASH_SET_VALUE.getValue()));
+            final int filterCapacity = context.getProperty(FILTER_CAPACITY_HINT).asInteger();
+            return useHashSet
+                ? new HashSetFilterWrapper(new HashSet<>(filterCapacity))
+                : new BloomFilterWrapper(BloomFilter.create(
+                    Funnels.stringFunnel(Charset.defaultCharset()),
+                    filterCapacity,
+                    context.getProperty(BLOOM_FILTER_FPP).asDouble()
+                ));
+        } else {
+            return new DistributedMapCacheClientWrapper(mapCacheClient);
+        }
+    }
+
+    @Override
+    public void onTrigger(final ProcessContext context, final ProcessSession session) throws ProcessException {
+        final FlowFile flowFile = session.get();
+        if (flowFile == null) {
+            return;
+        }
+
+        final ComponentLog logger = getLogger();
+
+        FlowFile nonDuplicatesFlowFile = session.create(flowFile);
+        FlowFile duplicatesFlowFile = session.create(flowFile);
+
+        try {
+            final long now = System.currentTimeMillis();
+
+            final FilterWrapper filter = getFilter(context);
+
+            final String recordHashingAlgorithm = context.getProperty(RECORD_HASHING_ALGORITHM).getValue();
+            final MessageDigest messageDigest = recordHashingAlgorithm.equals(NONE_ALGORITHM_VALUE.getValue())
+                    ? null
+                    : DigestUtils.getDigest(recordHashingAlgorithm);
+            final Boolean matchWholeRecord = context.getProperties().keySet().stream().noneMatch(p -> p.isDynamic());
+
+            final InputStream inputStream = session.read(flowFile);

Review comment:
       Might be able to do all these in a big try-with-resources clause?

##########
File path: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/DeduplicateRecords.java
##########
@@ -0,0 +1,675 @@
+/*
+ * 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.processors.standard;
+
+import com.google.common.base.Joiner;
+import com.google.common.hash.BloomFilter;
+import com.google.common.hash.Funnels;
+import org.apache.commons.codec.binary.Hex;
+import org.apache.commons.codec.digest.DigestUtils;
+import org.apache.commons.codec.digest.MessageDigestAlgorithms;
+import org.apache.nifi.annotation.behavior.DynamicProperty;
+import org.apache.nifi.annotation.behavior.EventDriven;
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.InputRequirement.Requirement;
+import org.apache.nifi.annotation.behavior.SupportsBatching;
+import org.apache.nifi.annotation.behavior.SystemResource;
+import org.apache.nifi.annotation.behavior.SystemResourceConsideration;
+import org.apache.nifi.annotation.behavior.WritesAttribute;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.SeeAlso;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.lifecycle.OnScheduled;
+import org.apache.nifi.components.AllowableValue;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.components.PropertyValue;
+import org.apache.nifi.components.ValidationContext;
+import org.apache.nifi.components.ValidationResult;
+import org.apache.nifi.components.Validator;
+import org.apache.nifi.distributed.cache.client.DistributedMapCacheClient;
+import org.apache.nifi.distributed.cache.client.Serializer;
+import org.apache.nifi.expression.ExpressionLanguageScope;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.flowfile.attributes.CoreAttributes;
+import org.apache.nifi.logging.ComponentLog;
+import org.apache.nifi.processor.AbstractProcessor;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.ProcessorInitializationContext;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.util.StandardValidators;
+import org.apache.nifi.record.path.FieldValue;
+import org.apache.nifi.record.path.RecordPath;
+import org.apache.nifi.record.path.RecordPathResult;
+import org.apache.nifi.record.path.util.RecordPathCache;
+import org.apache.nifi.record.path.validation.RecordPathPropertyNameValidator;
+import org.apache.nifi.record.path.validation.RecordPathValidator;
+import org.apache.nifi.serialization.RecordReader;
+import org.apache.nifi.serialization.RecordReaderFactory;
+import org.apache.nifi.serialization.RecordSetWriter;
+import org.apache.nifi.serialization.RecordSetWriterFactory;
+import org.apache.nifi.serialization.WriteResult;
+import org.apache.nifi.serialization.record.Record;
+import org.apache.nifi.serialization.record.RecordSchema;
+import org.apache.nifi.serialization.record.util.DataTypeUtils;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.Serializable;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+import java.util.ArrayList;
+import java.util.Collection;
+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.stream.Collectors;
+
+import static java.util.stream.Collectors.toList;
+import static org.apache.commons.codec.binary.StringUtils.getBytesUtf8;
+
+@EventDriven
+@SupportsBatching
+@InputRequirement(Requirement.INPUT_REQUIRED)
+@SystemResourceConsideration(resource = SystemResource.MEMORY,
+    description = "The HashSet filter type will grow memory space proportionate to the number of unique records processed. " +
+        "The BloomFilter type will use constant memory regardless of the number of records processed.")
+@Tags({"text", "record", "update", "change", "replace", "modify", "distinct", "unique",
+    "filter", "hash", "dupe", "duplicate", "dedupe"})
+@CapabilityDescription("This processor attempts to deduplicate a record set in memory using either a hashset or a bloom filter. " +
+        "It operates on a per-file basis rather than across an entire data set that spans multiple files.")
+@WritesAttribute(attribute = "record.count", description = "The number of records processed.")
+@DynamicProperty(
+    name = "RecordPath",
+    value = "An expression language statement used to determine how the RecordPath is resolved. " +
+            "The following variables are availble: ${field.name}, ${field.value}, ${field.type}",
+    description = "The name of each user-defined property must be a valid RecordPath.")
+@SeeAlso(classNames = {
+    "org.apache.nifi.distributed.cache.client.DistributedMapCacheClientService",
+    "org.apache.nifi.distributed.cache.server.map.DistributedMapCacheServer",
+    "org.apache.nifi.processors.standard.DetectDuplicate"
+})
+public class DeduplicateRecords extends AbstractProcessor {
+
+    private static final String FIELD_NAME = "field.name";
+    private static final String FIELD_VALUE = "field.value";
+    private static final String FIELD_TYPE = "field.type";
+
+    private volatile RecordPathCache recordPathCache;
+    private volatile List<String> recordPaths;
+
+    // VALUES
+
+    static final AllowableValue NONE_ALGORITHM_VALUE = new AllowableValue("none", "None",
+            "Do not use a hashing algorithm. The value of resolved RecordPaths will be combined with tildes (~) to form the unique record key. " +
+                    "This may use significantly more storage depending on the size and shape or your data.");
+    static final AllowableValue MD5_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.MD5, "MD5",
+            "The MD5 message-digest algorithm.");
+    static final AllowableValue SHA1_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.SHA_1, "SHA-1",
+            "The SHA-1 cryptographic hash algorithm.");
+    static final AllowableValue SHA256_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.SHA3_256, "SHA-256",
+            "The SHA-256 cryptographic hash algorithm.");
+    static final AllowableValue SHA512_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.SHA3_512, "SHA-512",
+            "The SHA-512 cryptographic hash algorithm.");
+
+    static final AllowableValue HASH_SET_VALUE = new AllowableValue("hash-set", "HashSet",
+            "Exactly matches records seen before with 100% accuracy at the expense of more storage usage. " +
+                    "Stores the filter data in a single cache entry in the distributed cache, and is loaded entirely into memory during duplicate detection. " +
+                    "This filter is preferred for small to medium data sets and offers high performance  loaded into memory when this processor is running.");
+    static final AllowableValue BLOOM_FILTER_VALUE = new AllowableValue("bloom-filter", "BloomFilter",
+            "Space-efficient data structure ideal for large data sets using probability to determine if a record was seen previously. " +
+                    "False positive matches are possible, but false negatives are not – in other words, a query returns either \"possibly in the set\" or \"definitely not in the set\". " +
+                    "You should use this option if the FlowFile content is large and you can tolerate some duplication in the data. Uses constant storage space regardless of the record set size.");
+
+    // PROPERTIES
+
+    static final PropertyDescriptor RECORD_READER = new PropertyDescriptor.Builder()
+            .name("record-reader")
+            .displayName("Record Reader")
+            .description("Specifies the Controller Service to use for reading incoming data")
+            .identifiesControllerService(RecordReaderFactory.class)
+            .required(true)
+            .build();
+
+    static final PropertyDescriptor RECORD_WRITER = new PropertyDescriptor.Builder()
+            .name("record-writer")
+            .displayName("Record Writer")
+            .description("Specifies the Controller Service to use for writing out the records")
+            .identifiesControllerService(RecordSetWriterFactory.class)
+            .required(true)
+            .build();
+
+    static final AllowableValue OPTION_SINGLE_FILE = new AllowableValue("single", "Single File");
+    static final AllowableValue OPTION_DATA_LAKE = new AllowableValue("dataLake", "Data Lake");

Review comment:
       Data Lake feels a little specific, maybe "Multiple Files" would work better, and the description could list a Data Lake as an example?

##########
File path: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/DeduplicateRecords.java
##########
@@ -0,0 +1,675 @@
+/*
+ * 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.processors.standard;
+
+import com.google.common.base.Joiner;
+import com.google.common.hash.BloomFilter;
+import com.google.common.hash.Funnels;
+import org.apache.commons.codec.binary.Hex;
+import org.apache.commons.codec.digest.DigestUtils;
+import org.apache.commons.codec.digest.MessageDigestAlgorithms;
+import org.apache.nifi.annotation.behavior.DynamicProperty;
+import org.apache.nifi.annotation.behavior.EventDriven;
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.InputRequirement.Requirement;
+import org.apache.nifi.annotation.behavior.SupportsBatching;
+import org.apache.nifi.annotation.behavior.SystemResource;
+import org.apache.nifi.annotation.behavior.SystemResourceConsideration;
+import org.apache.nifi.annotation.behavior.WritesAttribute;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.SeeAlso;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.lifecycle.OnScheduled;
+import org.apache.nifi.components.AllowableValue;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.components.PropertyValue;
+import org.apache.nifi.components.ValidationContext;
+import org.apache.nifi.components.ValidationResult;
+import org.apache.nifi.components.Validator;
+import org.apache.nifi.distributed.cache.client.DistributedMapCacheClient;
+import org.apache.nifi.distributed.cache.client.Serializer;
+import org.apache.nifi.expression.ExpressionLanguageScope;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.flowfile.attributes.CoreAttributes;
+import org.apache.nifi.logging.ComponentLog;
+import org.apache.nifi.processor.AbstractProcessor;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.ProcessorInitializationContext;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.util.StandardValidators;
+import org.apache.nifi.record.path.FieldValue;
+import org.apache.nifi.record.path.RecordPath;
+import org.apache.nifi.record.path.RecordPathResult;
+import org.apache.nifi.record.path.util.RecordPathCache;
+import org.apache.nifi.record.path.validation.RecordPathPropertyNameValidator;
+import org.apache.nifi.record.path.validation.RecordPathValidator;
+import org.apache.nifi.serialization.RecordReader;
+import org.apache.nifi.serialization.RecordReaderFactory;
+import org.apache.nifi.serialization.RecordSetWriter;
+import org.apache.nifi.serialization.RecordSetWriterFactory;
+import org.apache.nifi.serialization.WriteResult;
+import org.apache.nifi.serialization.record.Record;
+import org.apache.nifi.serialization.record.RecordSchema;
+import org.apache.nifi.serialization.record.util.DataTypeUtils;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.Serializable;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+import java.util.ArrayList;
+import java.util.Collection;
+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.stream.Collectors;
+
+import static java.util.stream.Collectors.toList;
+import static org.apache.commons.codec.binary.StringUtils.getBytesUtf8;
+
+@EventDriven
+@SupportsBatching
+@InputRequirement(Requirement.INPUT_REQUIRED)
+@SystemResourceConsideration(resource = SystemResource.MEMORY,
+    description = "The HashSet filter type will grow memory space proportionate to the number of unique records processed. " +
+        "The BloomFilter type will use constant memory regardless of the number of records processed.")
+@Tags({"text", "record", "update", "change", "replace", "modify", "distinct", "unique",
+    "filter", "hash", "dupe", "duplicate", "dedupe"})
+@CapabilityDescription("This processor attempts to deduplicate a record set in memory using either a hashset or a bloom filter. " +
+        "It operates on a per-file basis rather than across an entire data set that spans multiple files.")
+@WritesAttribute(attribute = "record.count", description = "The number of records processed.")
+@DynamicProperty(
+    name = "RecordPath",
+    value = "An expression language statement used to determine how the RecordPath is resolved. " +
+            "The following variables are availble: ${field.name}, ${field.value}, ${field.type}",
+    description = "The name of each user-defined property must be a valid RecordPath.")
+@SeeAlso(classNames = {
+    "org.apache.nifi.distributed.cache.client.DistributedMapCacheClientService",
+    "org.apache.nifi.distributed.cache.server.map.DistributedMapCacheServer",
+    "org.apache.nifi.processors.standard.DetectDuplicate"
+})
+public class DeduplicateRecords extends AbstractProcessor {
+
+    private static final String FIELD_NAME = "field.name";
+    private static final String FIELD_VALUE = "field.value";
+    private static final String FIELD_TYPE = "field.type";
+
+    private volatile RecordPathCache recordPathCache;
+    private volatile List<String> recordPaths;
+
+    // VALUES
+
+    static final AllowableValue NONE_ALGORITHM_VALUE = new AllowableValue("none", "None",
+            "Do not use a hashing algorithm. The value of resolved RecordPaths will be combined with tildes (~) to form the unique record key. " +
+                    "This may use significantly more storage depending on the size and shape or your data.");
+    static final AllowableValue MD5_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.MD5, "MD5",
+            "The MD5 message-digest algorithm.");
+    static final AllowableValue SHA1_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.SHA_1, "SHA-1",
+            "The SHA-1 cryptographic hash algorithm.");
+    static final AllowableValue SHA256_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.SHA3_256, "SHA-256",
+            "The SHA-256 cryptographic hash algorithm.");
+    static final AllowableValue SHA512_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.SHA3_512, "SHA-512",
+            "The SHA-512 cryptographic hash algorithm.");
+
+    static final AllowableValue HASH_SET_VALUE = new AllowableValue("hash-set", "HashSet",
+            "Exactly matches records seen before with 100% accuracy at the expense of more storage usage. " +
+                    "Stores the filter data in a single cache entry in the distributed cache, and is loaded entirely into memory during duplicate detection. " +
+                    "This filter is preferred for small to medium data sets and offers high performance  loaded into memory when this processor is running.");
+    static final AllowableValue BLOOM_FILTER_VALUE = new AllowableValue("bloom-filter", "BloomFilter",
+            "Space-efficient data structure ideal for large data sets using probability to determine if a record was seen previously. " +
+                    "False positive matches are possible, but false negatives are not – in other words, a query returns either \"possibly in the set\" or \"definitely not in the set\". " +
+                    "You should use this option if the FlowFile content is large and you can tolerate some duplication in the data. Uses constant storage space regardless of the record set size.");
+
+    // PROPERTIES
+
+    static final PropertyDescriptor RECORD_READER = new PropertyDescriptor.Builder()
+            .name("record-reader")
+            .displayName("Record Reader")
+            .description("Specifies the Controller Service to use for reading incoming data")
+            .identifiesControllerService(RecordReaderFactory.class)
+            .required(true)
+            .build();
+
+    static final PropertyDescriptor RECORD_WRITER = new PropertyDescriptor.Builder()
+            .name("record-writer")
+            .displayName("Record Writer")
+            .description("Specifies the Controller Service to use for writing out the records")
+            .identifiesControllerService(RecordSetWriterFactory.class)
+            .required(true)
+            .build();
+
+    static final AllowableValue OPTION_SINGLE_FILE = new AllowableValue("single", "Single File");
+    static final AllowableValue OPTION_DATA_LAKE = new AllowableValue("dataLake", "Data Lake");
+
+    static final PropertyDescriptor DEDUPLICATION_STRATEGY = new PropertyDescriptor.Builder()
+            .name("deduplication-strategy")
+            .displayName("Deduplication Strategy")
+            .description("The strategy to use for detecting and isolating duplicate records. The option for doing it " +
+                    "across a single data file will operate in memory, whereas the one for going across the enter data lake " +
+                    "will require a distributed map cache.")
+            .allowableValues(OPTION_SINGLE_FILE, OPTION_DATA_LAKE)
+            .defaultValue(OPTION_SINGLE_FILE.getValue())
+            .required(true)
+            .build();
+
+    static final PropertyDescriptor DISTRIBUTED_MAP_CACHE = new PropertyDescriptor.Builder()
+            .name("distributed-map-cache")
+            .displayName("Distributed Map Cache client")
+            .description("This configuration is required when the deduplication strategy is set to 'across data lake.' The map " +
+                    "cache will be used to check a data source such as HBase or Redis for entries indicating that a record has " +
+                    "been processed before. This option requires a downstream process that uses PutDistributedMapCache to write " +
+                    "an entry to the cache data source once the record has been processed to indicate that it has been handled before.")
+            .identifiesControllerService(DistributedMapCacheClient.class)
+            .required(false)
+            .addValidator(Validator.VALID)
+            .build();
+
+    static final PropertyDescriptor CACHE_IDENTIFIER = new PropertyDescriptor.Builder()
+            .name("cache-identifier")
+            .displayName("Cache Identifier")
+            .description("This option defines a record path operation to use for defining the cache identifier. It can be used " +
+                    "in addition to the hash settings. This field will have the expression language attribute \"record.hash.value\" " +
+                    "available to it to use with it to generate the record path operation.")
+            .expressionLanguageSupported(ExpressionLanguageScope.FLOWFILE_ATTRIBUTES)
+            .required(false)
+            .addValidator(Validator.VALID)
+            .build();
+
+    static final PropertyDescriptor INCLUDE_ZERO_RECORD_FLOWFILES = new PropertyDescriptor.Builder()
+            .name("include-zero-record-flowfiles")
+            .displayName("Include Zero Record FlowFiles")
+            .description("When converting an incoming FlowFile, if the conversion results in no data, "
+                    + "this property specifies whether or not a FlowFile will be sent to the corresponding relationship")
+            .expressionLanguageSupported(ExpressionLanguageScope.NONE)
+            .allowableValues("true", "false")
+            .defaultValue("true")
+            .required(true)
+            .build();
+
+    static final PropertyDescriptor RECORD_HASHING_ALGORITHM = new PropertyDescriptor.Builder()
+            .name("record-hashing-algorithm")
+            .displayName("Record Hashing Algorithm")
+            .description("The algorithm used to hash the combined set of resolved RecordPath values for cache storage.")
+            .allowableValues(
+                    NONE_ALGORITHM_VALUE,
+                    MD5_ALGORITHM_VALUE,
+                    SHA1_ALGORITHM_VALUE,
+                    SHA256_ALGORITHM_VALUE,
+                    SHA512_ALGORITHM_VALUE
+            )
+            .defaultValue(SHA1_ALGORITHM_VALUE.getValue())
+            .expressionLanguageSupported(ExpressionLanguageScope.NONE)
+            .required(true)
+            .build();
+
+    static final PropertyDescriptor FILTER_TYPE = new PropertyDescriptor.Builder()
+            .name("filter-type")
+            .displayName("Filter Type")
+            .description("The filter used to determine whether a record has been seen before based on the matching RecordPath criteria.")
+            .allowableValues(
+                    HASH_SET_VALUE,
+                    BLOOM_FILTER_VALUE
+            )
+            .defaultValue(HASH_SET_VALUE.getValue())
+            .required(true)
+            .build();
+
+    static final PropertyDescriptor FILTER_CAPACITY_HINT = new PropertyDescriptor.Builder()

Review comment:
       These two look Bloom-filter-specific, if so please add the `dependsOn` method to them.

##########
File path: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/DeduplicateRecords.java
##########
@@ -0,0 +1,675 @@
+/*
+ * 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.processors.standard;
+
+import com.google.common.base.Joiner;
+import com.google.common.hash.BloomFilter;
+import com.google.common.hash.Funnels;
+import org.apache.commons.codec.binary.Hex;
+import org.apache.commons.codec.digest.DigestUtils;
+import org.apache.commons.codec.digest.MessageDigestAlgorithms;
+import org.apache.nifi.annotation.behavior.DynamicProperty;
+import org.apache.nifi.annotation.behavior.EventDriven;
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.InputRequirement.Requirement;
+import org.apache.nifi.annotation.behavior.SupportsBatching;
+import org.apache.nifi.annotation.behavior.SystemResource;
+import org.apache.nifi.annotation.behavior.SystemResourceConsideration;
+import org.apache.nifi.annotation.behavior.WritesAttribute;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.SeeAlso;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.lifecycle.OnScheduled;
+import org.apache.nifi.components.AllowableValue;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.components.PropertyValue;
+import org.apache.nifi.components.ValidationContext;
+import org.apache.nifi.components.ValidationResult;
+import org.apache.nifi.components.Validator;
+import org.apache.nifi.distributed.cache.client.DistributedMapCacheClient;
+import org.apache.nifi.distributed.cache.client.Serializer;
+import org.apache.nifi.expression.ExpressionLanguageScope;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.flowfile.attributes.CoreAttributes;
+import org.apache.nifi.logging.ComponentLog;
+import org.apache.nifi.processor.AbstractProcessor;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.ProcessorInitializationContext;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.util.StandardValidators;
+import org.apache.nifi.record.path.FieldValue;
+import org.apache.nifi.record.path.RecordPath;
+import org.apache.nifi.record.path.RecordPathResult;
+import org.apache.nifi.record.path.util.RecordPathCache;
+import org.apache.nifi.record.path.validation.RecordPathPropertyNameValidator;
+import org.apache.nifi.record.path.validation.RecordPathValidator;
+import org.apache.nifi.serialization.RecordReader;
+import org.apache.nifi.serialization.RecordReaderFactory;
+import org.apache.nifi.serialization.RecordSetWriter;
+import org.apache.nifi.serialization.RecordSetWriterFactory;
+import org.apache.nifi.serialization.WriteResult;
+import org.apache.nifi.serialization.record.Record;
+import org.apache.nifi.serialization.record.RecordSchema;
+import org.apache.nifi.serialization.record.util.DataTypeUtils;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.Serializable;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+import java.util.ArrayList;
+import java.util.Collection;
+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.stream.Collectors;
+
+import static java.util.stream.Collectors.toList;
+import static org.apache.commons.codec.binary.StringUtils.getBytesUtf8;
+
+@EventDriven
+@SupportsBatching
+@InputRequirement(Requirement.INPUT_REQUIRED)
+@SystemResourceConsideration(resource = SystemResource.MEMORY,
+    description = "The HashSet filter type will grow memory space proportionate to the number of unique records processed. " +
+        "The BloomFilter type will use constant memory regardless of the number of records processed.")
+@Tags({"text", "record", "update", "change", "replace", "modify", "distinct", "unique",
+    "filter", "hash", "dupe", "duplicate", "dedupe"})
+@CapabilityDescription("This processor attempts to deduplicate a record set in memory using either a hashset or a bloom filter. " +
+        "It operates on a per-file basis rather than across an entire data set that spans multiple files.")
+@WritesAttribute(attribute = "record.count", description = "The number of records processed.")
+@DynamicProperty(
+    name = "RecordPath",
+    value = "An expression language statement used to determine how the RecordPath is resolved. " +
+            "The following variables are availble: ${field.name}, ${field.value}, ${field.type}",
+    description = "The name of each user-defined property must be a valid RecordPath.")
+@SeeAlso(classNames = {
+    "org.apache.nifi.distributed.cache.client.DistributedMapCacheClientService",
+    "org.apache.nifi.distributed.cache.server.map.DistributedMapCacheServer",
+    "org.apache.nifi.processors.standard.DetectDuplicate"
+})
+public class DeduplicateRecords extends AbstractProcessor {
+
+    private static final String FIELD_NAME = "field.name";
+    private static final String FIELD_VALUE = "field.value";
+    private static final String FIELD_TYPE = "field.type";
+
+    private volatile RecordPathCache recordPathCache;
+    private volatile List<String> recordPaths;
+
+    // VALUES
+
+    static final AllowableValue NONE_ALGORITHM_VALUE = new AllowableValue("none", "None",
+            "Do not use a hashing algorithm. The value of resolved RecordPaths will be combined with tildes (~) to form the unique record key. " +
+                    "This may use significantly more storage depending on the size and shape or your data.");
+    static final AllowableValue MD5_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.MD5, "MD5",
+            "The MD5 message-digest algorithm.");
+    static final AllowableValue SHA1_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.SHA_1, "SHA-1",
+            "The SHA-1 cryptographic hash algorithm.");
+    static final AllowableValue SHA256_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.SHA3_256, "SHA-256",
+            "The SHA-256 cryptographic hash algorithm.");
+    static final AllowableValue SHA512_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.SHA3_512, "SHA-512",
+            "The SHA-512 cryptographic hash algorithm.");
+
+    static final AllowableValue HASH_SET_VALUE = new AllowableValue("hash-set", "HashSet",
+            "Exactly matches records seen before with 100% accuracy at the expense of more storage usage. " +
+                    "Stores the filter data in a single cache entry in the distributed cache, and is loaded entirely into memory during duplicate detection. " +
+                    "This filter is preferred for small to medium data sets and offers high performance  loaded into memory when this processor is running.");
+    static final AllowableValue BLOOM_FILTER_VALUE = new AllowableValue("bloom-filter", "BloomFilter",
+            "Space-efficient data structure ideal for large data sets using probability to determine if a record was seen previously. " +
+                    "False positive matches are possible, but false negatives are not – in other words, a query returns either \"possibly in the set\" or \"definitely not in the set\". " +
+                    "You should use this option if the FlowFile content is large and you can tolerate some duplication in the data. Uses constant storage space regardless of the record set size.");
+
+    // PROPERTIES
+
+    static final PropertyDescriptor RECORD_READER = new PropertyDescriptor.Builder()
+            .name("record-reader")
+            .displayName("Record Reader")
+            .description("Specifies the Controller Service to use for reading incoming data")
+            .identifiesControllerService(RecordReaderFactory.class)
+            .required(true)
+            .build();
+
+    static final PropertyDescriptor RECORD_WRITER = new PropertyDescriptor.Builder()
+            .name("record-writer")
+            .displayName("Record Writer")
+            .description("Specifies the Controller Service to use for writing out the records")
+            .identifiesControllerService(RecordSetWriterFactory.class)
+            .required(true)
+            .build();
+
+    static final AllowableValue OPTION_SINGLE_FILE = new AllowableValue("single", "Single File");
+    static final AllowableValue OPTION_DATA_LAKE = new AllowableValue("dataLake", "Data Lake");
+
+    static final PropertyDescriptor DEDUPLICATION_STRATEGY = new PropertyDescriptor.Builder()
+            .name("deduplication-strategy")
+            .displayName("Deduplication Strategy")
+            .description("The strategy to use for detecting and isolating duplicate records. The option for doing it " +
+                    "across a single data file will operate in memory, whereas the one for going across the enter data lake " +
+                    "will require a distributed map cache.")
+            .allowableValues(OPTION_SINGLE_FILE, OPTION_DATA_LAKE)
+            .defaultValue(OPTION_SINGLE_FILE.getValue())
+            .required(true)
+            .build();
+
+    static final PropertyDescriptor DISTRIBUTED_MAP_CACHE = new PropertyDescriptor.Builder()
+            .name("distributed-map-cache")
+            .displayName("Distributed Map Cache client")
+            .description("This configuration is required when the deduplication strategy is set to 'across data lake.' The map " +
+                    "cache will be used to check a data source such as HBase or Redis for entries indicating that a record has " +
+                    "been processed before. This option requires a downstream process that uses PutDistributedMapCache to write " +
+                    "an entry to the cache data source once the record has been processed to indicate that it has been handled before.")
+            .identifiesControllerService(DistributedMapCacheClient.class)
+            .required(false)
+            .addValidator(Validator.VALID)
+            .build();
+
+    static final PropertyDescriptor CACHE_IDENTIFIER = new PropertyDescriptor.Builder()

Review comment:
       This looks like another dependent property

##########
File path: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/DeduplicateRecords.java
##########
@@ -0,0 +1,675 @@
+/*
+ * 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.processors.standard;
+
+import com.google.common.base.Joiner;
+import com.google.common.hash.BloomFilter;
+import com.google.common.hash.Funnels;
+import org.apache.commons.codec.binary.Hex;
+import org.apache.commons.codec.digest.DigestUtils;
+import org.apache.commons.codec.digest.MessageDigestAlgorithms;
+import org.apache.nifi.annotation.behavior.DynamicProperty;
+import org.apache.nifi.annotation.behavior.EventDriven;
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.InputRequirement.Requirement;
+import org.apache.nifi.annotation.behavior.SupportsBatching;
+import org.apache.nifi.annotation.behavior.SystemResource;
+import org.apache.nifi.annotation.behavior.SystemResourceConsideration;
+import org.apache.nifi.annotation.behavior.WritesAttribute;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.SeeAlso;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.lifecycle.OnScheduled;
+import org.apache.nifi.components.AllowableValue;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.components.PropertyValue;
+import org.apache.nifi.components.ValidationContext;
+import org.apache.nifi.components.ValidationResult;
+import org.apache.nifi.components.Validator;
+import org.apache.nifi.distributed.cache.client.DistributedMapCacheClient;
+import org.apache.nifi.distributed.cache.client.Serializer;
+import org.apache.nifi.expression.ExpressionLanguageScope;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.flowfile.attributes.CoreAttributes;
+import org.apache.nifi.logging.ComponentLog;
+import org.apache.nifi.processor.AbstractProcessor;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.ProcessorInitializationContext;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.util.StandardValidators;
+import org.apache.nifi.record.path.FieldValue;
+import org.apache.nifi.record.path.RecordPath;
+import org.apache.nifi.record.path.RecordPathResult;
+import org.apache.nifi.record.path.util.RecordPathCache;
+import org.apache.nifi.record.path.validation.RecordPathPropertyNameValidator;
+import org.apache.nifi.record.path.validation.RecordPathValidator;
+import org.apache.nifi.serialization.RecordReader;
+import org.apache.nifi.serialization.RecordReaderFactory;
+import org.apache.nifi.serialization.RecordSetWriter;
+import org.apache.nifi.serialization.RecordSetWriterFactory;
+import org.apache.nifi.serialization.WriteResult;
+import org.apache.nifi.serialization.record.Record;
+import org.apache.nifi.serialization.record.RecordSchema;
+import org.apache.nifi.serialization.record.util.DataTypeUtils;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.Serializable;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+import java.util.ArrayList;
+import java.util.Collection;
+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.stream.Collectors;
+
+import static java.util.stream.Collectors.toList;
+import static org.apache.commons.codec.binary.StringUtils.getBytesUtf8;
+
+@EventDriven
+@SupportsBatching
+@InputRequirement(Requirement.INPUT_REQUIRED)
+@SystemResourceConsideration(resource = SystemResource.MEMORY,
+    description = "The HashSet filter type will grow memory space proportionate to the number of unique records processed. " +
+        "The BloomFilter type will use constant memory regardless of the number of records processed.")
+@Tags({"text", "record", "update", "change", "replace", "modify", "distinct", "unique",
+    "filter", "hash", "dupe", "duplicate", "dedupe"})
+@CapabilityDescription("This processor attempts to deduplicate a record set in memory using either a hashset or a bloom filter. " +
+        "It operates on a per-file basis rather than across an entire data set that spans multiple files.")
+@WritesAttribute(attribute = "record.count", description = "The number of records processed.")
+@DynamicProperty(
+    name = "RecordPath",
+    value = "An expression language statement used to determine how the RecordPath is resolved. " +
+            "The following variables are availble: ${field.name}, ${field.value}, ${field.type}",
+    description = "The name of each user-defined property must be a valid RecordPath.")
+@SeeAlso(classNames = {
+    "org.apache.nifi.distributed.cache.client.DistributedMapCacheClientService",
+    "org.apache.nifi.distributed.cache.server.map.DistributedMapCacheServer",
+    "org.apache.nifi.processors.standard.DetectDuplicate"
+})
+public class DeduplicateRecords extends AbstractProcessor {
+
+    private static final String FIELD_NAME = "field.name";
+    private static final String FIELD_VALUE = "field.value";
+    private static final String FIELD_TYPE = "field.type";
+
+    private volatile RecordPathCache recordPathCache;
+    private volatile List<String> recordPaths;
+
+    // VALUES
+
+    static final AllowableValue NONE_ALGORITHM_VALUE = new AllowableValue("none", "None",
+            "Do not use a hashing algorithm. The value of resolved RecordPaths will be combined with tildes (~) to form the unique record key. " +
+                    "This may use significantly more storage depending on the size and shape or your data.");
+    static final AllowableValue MD5_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.MD5, "MD5",
+            "The MD5 message-digest algorithm.");
+    static final AllowableValue SHA1_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.SHA_1, "SHA-1",
+            "The SHA-1 cryptographic hash algorithm.");
+    static final AllowableValue SHA256_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.SHA3_256, "SHA-256",
+            "The SHA-256 cryptographic hash algorithm.");
+    static final AllowableValue SHA512_ALGORITHM_VALUE = new AllowableValue(MessageDigestAlgorithms.SHA3_512, "SHA-512",
+            "The SHA-512 cryptographic hash algorithm.");
+
+    static final AllowableValue HASH_SET_VALUE = new AllowableValue("hash-set", "HashSet",
+            "Exactly matches records seen before with 100% accuracy at the expense of more storage usage. " +
+                    "Stores the filter data in a single cache entry in the distributed cache, and is loaded entirely into memory during duplicate detection. " +
+                    "This filter is preferred for small to medium data sets and offers high performance  loaded into memory when this processor is running.");
+    static final AllowableValue BLOOM_FILTER_VALUE = new AllowableValue("bloom-filter", "BloomFilter",
+            "Space-efficient data structure ideal for large data sets using probability to determine if a record was seen previously. " +
+                    "False positive matches are possible, but false negatives are not – in other words, a query returns either \"possibly in the set\" or \"definitely not in the set\". " +
+                    "You should use this option if the FlowFile content is large and you can tolerate some duplication in the data. Uses constant storage space regardless of the record set size.");
+
+    // PROPERTIES
+
+    static final PropertyDescriptor RECORD_READER = new PropertyDescriptor.Builder()
+            .name("record-reader")
+            .displayName("Record Reader")
+            .description("Specifies the Controller Service to use for reading incoming data")
+            .identifiesControllerService(RecordReaderFactory.class)
+            .required(true)
+            .build();
+
+    static final PropertyDescriptor RECORD_WRITER = new PropertyDescriptor.Builder()
+            .name("record-writer")
+            .displayName("Record Writer")
+            .description("Specifies the Controller Service to use for writing out the records")
+            .identifiesControllerService(RecordSetWriterFactory.class)
+            .required(true)
+            .build();
+
+    static final AllowableValue OPTION_SINGLE_FILE = new AllowableValue("single", "Single File");
+    static final AllowableValue OPTION_DATA_LAKE = new AllowableValue("dataLake", "Data Lake");
+
+    static final PropertyDescriptor DEDUPLICATION_STRATEGY = new PropertyDescriptor.Builder()
+            .name("deduplication-strategy")
+            .displayName("Deduplication Strategy")
+            .description("The strategy to use for detecting and isolating duplicate records. The option for doing it " +
+                    "across a single data file will operate in memory, whereas the one for going across the enter data lake " +
+                    "will require a distributed map cache.")
+            .allowableValues(OPTION_SINGLE_FILE, OPTION_DATA_LAKE)
+            .defaultValue(OPTION_SINGLE_FILE.getValue())
+            .required(true)
+            .build();
+
+    static final PropertyDescriptor DISTRIBUTED_MAP_CACHE = new PropertyDescriptor.Builder()
+            .name("distributed-map-cache")
+            .displayName("Distributed Map Cache client")
+            .description("This configuration is required when the deduplication strategy is set to 'across data lake.' The map " +
+                    "cache will be used to check a data source such as HBase or Redis for entries indicating that a record has " +
+                    "been processed before. This option requires a downstream process that uses PutDistributedMapCache to write " +
+                    "an entry to the cache data source once the record has been processed to indicate that it has been handled before.")
+            .identifiesControllerService(DistributedMapCacheClient.class)
+            .required(false)
+            .addValidator(Validator.VALID)
+            .build();
+
+    static final PropertyDescriptor CACHE_IDENTIFIER = new PropertyDescriptor.Builder()
+            .name("cache-identifier")
+            .displayName("Cache Identifier")
+            .description("This option defines a record path operation to use for defining the cache identifier. It can be used " +
+                    "in addition to the hash settings. This field will have the expression language attribute \"record.hash.value\" " +
+                    "available to it to use with it to generate the record path operation.")
+            .expressionLanguageSupported(ExpressionLanguageScope.FLOWFILE_ATTRIBUTES)
+            .required(false)
+            .addValidator(Validator.VALID)
+            .build();
+
+    static final PropertyDescriptor INCLUDE_ZERO_RECORD_FLOWFILES = new PropertyDescriptor.Builder()
+            .name("include-zero-record-flowfiles")
+            .displayName("Include Zero Record FlowFiles")
+            .description("When converting an incoming FlowFile, if the conversion results in no data, "

Review comment:
       Does this description apply? I suppose the only way you'd get no output is either with empty input or a bad output schema...




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