adamfisher commented on a change in pull request #3317:
URL: https://github.com/apache/nifi/pull/3317#discussion_r447318893



##########
File path: 
nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/DetectDuplicateRecord.java
##########
@@ -0,0 +1,620 @@
+/*
+ * 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.*;
+import org.apache.nifi.annotation.behavior.InputRequirement.Requirement;
+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.*;
+import org.apache.nifi.distributed.cache.client.Deserializer;
+import org.apache.nifi.distributed.cache.client.DistributedMapCacheClient;
+import org.apache.nifi.distributed.cache.client.Serializer;
+import 
org.apache.nifi.distributed.cache.client.exception.DeserializationException;
+import 
org.apache.nifi.distributed.cache.client.exception.SerializationException;
+import org.apache.nifi.expression.AttributeExpression.ResultType;
+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.*;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.util.StandardValidators;
+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.schema.access.SchemaNotFoundException;
+import org.apache.nifi.serialization.*;
+import org.apache.nifi.serialization.record.Record;
+import org.apache.nifi.serialization.record.RecordSchema;
+
+import java.io.*;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+import java.util.*;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+
+import static java.util.stream.Collectors.toList;
+import static org.apache.commons.codec.binary.StringUtils.getBytesUtf8;
+import static org.apache.commons.lang3.StringUtils.*;
+
+@EventDriven
+@SupportsBatching
+@InputRequirement(Requirement.INPUT_REQUIRED)
+@SystemResourceConsideration(resource = SystemResource.MEMORY,
+        description = "Caches records from each incoming FlowFile and 
determines if the cached record has " +
+                "already been seen. The name of user-defined properties 
determines the RecordPath values used to " +
+                "determine if a record is unique. If no user-defined 
properties are present, the entire record is " +
+                "used as the input to determine uniqueness. All duplicate 
records are routed to 'duplicate'. " +
+                "If the record is not determined to be a duplicate, the 
Processor routes the record to 'non-duplicate'.")
+@Tags({"text", "record", "update", "change", "replace", "modify", "distinct", 
"unique",
+        "filter", "hash", "dupe", "duplicate", "dedupe"})
+@CapabilityDescription("Caches records from each incoming FlowFile and 
determines if the cached record has " +

Review comment:
       File added in commits:
   
nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/resources/docs/org/apache/nifi/processors/standard/DetectDuplicateRecord/additionalDetails.html




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