updated jdocs and removed redundant import

core/src/main/java/org/elasticsearch/ingest/IngestMetadata.java

@@ -22,8 +22,6 @@ package org.elasticsearch.ingest;
 import org.elasticsearch.cluster.AbstractDiffable;
 import org.elasticsearch.cluster.metadata.MetaData;
 import org.elasticsearch.common.ParseField;
-import org.elasticsearch.common.ParsingException;
-import org.elasticsearch.common.collect.HppcMaps;
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.io.stream.StreamOutput;
 import org.elasticsearch.common.xcontent.ObjectParser;

core/src/main/java/org/elasticsearch/ingest/IngestService.java

@@ -19,7 +19,6 @@
 
 package org.elasticsearch.ingest;
 
-import org.elasticsearch.cluster.ClusterService;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.script.ScriptService;
 import org.elasticsearch.threadpool.ThreadPool;
@@ -28,8 +27,7 @@ import java.io.Closeable;
 import java.io.IOException;
 
 /**
- * Instantiates and wires all the services that the ingest plugin will be needing.
- * Also the bootstrapper is in charge of starting and stopping the ingest plugin based on the cluster state.
+ * Holder class for several ingest related services.
  */
 public class IngestService implements Closeable {
 

core/src/main/java/org/elasticsearch/ingest/PipelineConfiguration.java

@@ -19,8 +19,6 @@
 
 package org.elasticsearch.ingest;
 
-import org.apache.lucene.util.BytesRef;
-import org.elasticsearch.Build;
 import org.elasticsearch.common.ParseField;
 import org.elasticsearch.common.bytes.BytesReference;
 import org.elasticsearch.common.io.stream.StreamInput;
@@ -34,7 +32,6 @@ import org.elasticsearch.common.xcontent.XContentParser;
 
 import java.io.IOException;
 import java.util.Map;
-import java.util.Objects;
 import java.util.function.BiFunction;
 
 /**

core/src/main/java/org/elasticsearch/ingest/core/CompoundProcessor.java

@@ -25,7 +25,6 @@ import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
-import java.util.stream.Collectors;
 
 /**
  * A Processor that executes a list of other "processors". It executes a separate list of

core/src/main/java/org/elasticsearch/ingest/processor/DeDotProcessor.java

@@ -23,7 +23,6 @@ import org.elasticsearch.ingest.core.AbstractProcessor;
 import org.elasticsearch.ingest.core.AbstractProcessorFactory;
 import org.elasticsearch.ingest.core.ConfigurationUtils;
 import org.elasticsearch.ingest.core.IngestDocument;
-import org.elasticsearch.ingest.core.Processor;
 
 import java.util.HashMap;
 import java.util.Iterator;

core/src/main/java/org/elasticsearch/ingest/processor/FailProcessor.java

@@ -23,7 +23,6 @@ import org.elasticsearch.ingest.core.AbstractProcessor;
 import org.elasticsearch.ingest.core.AbstractProcessorFactory;
 import org.elasticsearch.ingest.core.ConfigurationUtils;
 import org.elasticsearch.ingest.core.IngestDocument;
-import org.elasticsearch.ingest.core.Processor;
 import org.elasticsearch.ingest.core.TemplateService;
 
 import java.util.Map;

core/src/main/java/org/elasticsearch/ingest/processor/GsubProcessor.java

@@ -23,7 +23,6 @@ import org.elasticsearch.ingest.core.AbstractProcessor;
 import org.elasticsearch.ingest.core.AbstractProcessorFactory;
 import org.elasticsearch.ingest.core.IngestDocument;
 import org.elasticsearch.ingest.core.ConfigurationUtils;
-import org.elasticsearch.ingest.core.Processor;
 
 import java.util.Map;
 import java.util.regex.Matcher;

core/src/main/java/org/elasticsearch/ingest/processor/JoinProcessor.java

@@ -23,7 +23,6 @@ import org.elasticsearch.ingest.core.AbstractProcessor;
 import org.elasticsearch.ingest.core.AbstractProcessorFactory;
 import org.elasticsearch.ingest.core.IngestDocument;
 import org.elasticsearch.ingest.core.ConfigurationUtils;
-import org.elasticsearch.ingest.core.Processor;
 
 import java.util.List;
 import java.util.Map;

core/src/main/java/org/elasticsearch/ingest/processor/RemoveProcessor.java

@@ -24,7 +24,6 @@ import org.elasticsearch.ingest.core.AbstractProcessorFactory;
 import org.elasticsearch.ingest.core.IngestDocument;
 import org.elasticsearch.ingest.core.TemplateService;
 import org.elasticsearch.ingest.core.ConfigurationUtils;
-import org.elasticsearch.ingest.core.Processor;
 
 import java.util.Map;
 

core/src/main/java/org/elasticsearch/ingest/processor/RenameProcessor.java

@@ -23,7 +23,6 @@ import org.elasticsearch.ingest.core.AbstractProcessor;
 import org.elasticsearch.ingest.core.AbstractProcessorFactory;
 import org.elasticsearch.ingest.core.IngestDocument;
 import org.elasticsearch.ingest.core.ConfigurationUtils;
-import org.elasticsearch.ingest.core.Processor;
 
 import java.util.Map;