Optimize API: Add onlyExpungeDeletes, flush and refresh parameters. Closes #15.

modules/elasticsearch/src/main/java/org/elasticsearch/action/admin/indices/optimize/OptimizeRequest.java

@@ -44,6 +44,12 @@ public class OptimizeRequest extends BroadcastOperationRequest {
 
     private int maxNumSegments = -1;
 
+    private boolean onlyExpungeDeletes = false;
+
+    private boolean flush = false;
+
+    private boolean refresh = false;
+
     /**
      * Constructs an optimization request over one or more indices.
      *
@@ -101,15 +107,68 @@ public class OptimizeRequest extends BroadcastOperationRequest {
         return this;
     }
 
+    /**
+     * Should the optimization only expunge deletes from the index, without full optimization.
+     * Defaults to full optimization (<tt>false</tt>).
+     */
+    public boolean onlyExpungeDeletes() {
+        return onlyExpungeDeletes;
+    }
+
+    /**
+     * Should the optimization only expunge deletes from the index, without full optimization.
+     * Defaults to full optimization (<tt>false</tt>).
+     */
+    public OptimizeRequest onlyExpungeDeletes(boolean onlyExpungeDeletes) {
+        this.onlyExpungeDeletes = onlyExpungeDeletes;
+        return this;
+    }
+
+    /**
+     * Should flush be performed after the optimization. Defaults to <tt>false</tt>.
+     */
+    public boolean flush() {
+        return flush;
+    }
+
+    /**
+     * Should flush be performed after the optimization. Defaults to <tt>false</tt>.
+     */
+    public OptimizeRequest flush(boolean flush) {
+        this.flush = flush;
+        return this;
+    }
+
+    /**
+     * Should refresh be performed after the optimization. Defaults to <tt>false</tt>.
+     */
+    public boolean refresh() {
+        return refresh;
+    }
+
+    /**
+     * Should refresh be performed after the optimization. Defaults to <tt>false</tt>.
+     */
+    public OptimizeRequest refresh(boolean refresh) {
+        this.refresh = refresh;
+        return this;
+    }
+
     public void readFrom(DataInput in) throws IOException, ClassNotFoundException {
         super.readFrom(in);
         waitForMerge = in.readBoolean();
         maxNumSegments = in.readInt();
+        onlyExpungeDeletes = in.readBoolean();
+        flush = in.readBoolean();
+        refresh = in.readBoolean();
     }
 
     public void writeTo(DataOutput out) throws IOException {
         super.writeTo(out);
         out.writeBoolean(waitForMerge);
         out.writeInt(maxNumSegments);
+        out.writeBoolean(onlyExpungeDeletes);
+        out.writeBoolean(flush);
+        out.writeBoolean(refresh);
     }
 }

modules/elasticsearch/src/main/java/org/elasticsearch/action/admin/indices/optimize/ShardOptimizeRequest.java

@@ -34,6 +34,12 @@ public class ShardOptimizeRequest extends BroadcastShardOperationRequest {
 
     private int maxNumSegments = -1;
 
+    private boolean onlyExpungeDeletes = false;
+
+    private boolean flush = false;
+
+    private boolean refresh = false;
+
     ShardOptimizeRequest() {
     }
 
@@ -41,6 +47,9 @@ public class ShardOptimizeRequest extends BroadcastShardOperationRequest {
         super(index, shardId);
         waitForMerge = request.waitForMerge();
         maxNumSegments = request.maxNumSegments();
+        onlyExpungeDeletes = request.onlyExpungeDeletes();
+        flush = request.flush();
+        refresh = request.refresh();
     }
 
     boolean waitForMerge() {
@@ -51,15 +60,33 @@ public class ShardOptimizeRequest extends BroadcastShardOperationRequest {
         return maxNumSegments;
     }
 
+    public boolean onlyExpungeDeletes() {
+        return onlyExpungeDeletes;
+    }
+
+    public boolean flush() {
+        return flush;
+    }
+
+    public boolean refresh() {
+        return refresh;
+    }
+
     @Override public void readFrom(DataInput in) throws IOException, ClassNotFoundException {
         super.readFrom(in);
         waitForMerge = in.readBoolean();
         maxNumSegments = in.readInt();
+        onlyExpungeDeletes = in.readBoolean();
+        flush = in.readBoolean();
+        refresh = in.readBoolean();
     }
 
     @Override public void writeTo(DataOutput out) throws IOException {
         super.writeTo(out);
         out.writeBoolean(waitForMerge);
         out.writeInt(maxNumSegments);
+        out.writeBoolean(onlyExpungeDeletes);
+        out.writeBoolean(flush);
+        out.writeBoolean(refresh);
     }
 }

modules/elasticsearch/src/main/java/org/elasticsearch/action/admin/indices/optimize/TransportOptimizeAction.java

@@ -86,7 +86,13 @@ public class TransportOptimizeAction extends TransportBroadcastOperationAction<O
 
     @Override protected ShardOptimizeResponse shardOperation(ShardOptimizeRequest request) throws ElasticSearchException {
         IndexShard indexShard = indicesService.indexServiceSafe(request.index()).shardSafe(request.shardId());
-        indexShard.optimize(new Engine.Optimize(request.waitForMerge(), request.maxNumSegments()));
+        indexShard.optimize(new Engine.Optimize()
+                .waitForMerge(request.waitForMerge())
+                .maxNumSegments(request.maxNumSegments())
+                .onlyExpungeDeletes(request.onlyExpungeDeletes())
+                .flush(request.flush())
+                .refresh(request.refresh())
+        );
         return new ShardOptimizeResponse(request.index(), request.shardId());
     }
 

modules/elasticsearch/src/main/java/org/elasticsearch/http/action/admin/indices/optimize/HttpOptimizeAction.java

@@ -51,6 +51,9 @@ public class HttpOptimizeAction extends BaseHttpServerHandler {
         try {
             optimizeRequest.waitForMerge(HttpActions.paramAsBoolean(request.param("waitForMerge"), true));
             optimizeRequest.maxNumSegments(HttpActions.paramAsInt(request.param("maxNumSegments"), -1));
+            optimizeRequest.onlyExpungeDeletes(HttpActions.paramAsBoolean(request.param("onlyExpungeDeletes"), false));
+            optimizeRequest.flush(HttpActions.paramAsBoolean(request.param("flush"), false));
+            optimizeRequest.refresh(HttpActions.paramAsBoolean(request.param("refresh"), false));
 
             // we just send back a response, no need to fork a listener
             optimizeRequest.listenerThreaded(false);

modules/elasticsearch/src/main/java/org/elasticsearch/index/engine/Engine.java

@@ -162,24 +162,62 @@ public interface Engine extends IndexShardComponent {
     }
 
     static class Optimize {
-        private final boolean waitForMerge;
+        private boolean waitForMerge = true;
-        private final int maxNumSegments;
+        private int maxNumSegments = -1;
+        private boolean onlyExpungeDeletes = false;
+        private boolean flush = false;
+        private boolean refresh = false;
 
-        public Optimize(boolean waitForMerge, int maxNumSegments) {
+        public Optimize() {
-            this.waitForMerge = waitForMerge;
-            this.maxNumSegments = maxNumSegments;
         }
 
         public boolean waitForMerge() {
             return waitForMerge;
         }
 
+        public Optimize waitForMerge(boolean waitForMerge) {
+            this.waitForMerge = waitForMerge;
+            return this;
+        }
+
         public int maxNumSegments() {
             return maxNumSegments;
         }
 
+        public Optimize maxNumSegments(int maxNumSegments) {
+            this.maxNumSegments = maxNumSegments;
+            return this;
+        }
+
+        public boolean onlyExpungeDeletes() {
+            return onlyExpungeDeletes;
+        }
+
+        public Optimize onlyExpungeDeletes(boolean onlyExpungeDeletes) {
+            this.onlyExpungeDeletes = onlyExpungeDeletes;
+            return this;
+        }
+
+        public boolean flush() {
+            return flush;
+        }
+
+        public Optimize flush(boolean flush) {
+            this.flush = flush;
+            return this;
+        }
+
+        public boolean refresh() {
+            return refresh;
+        }
+
+        public Optimize refresh(boolean refresh) {
+            this.refresh = refresh;
+            return this;
+        }
+
         @Override public String toString() {
-            return "waitForMerge[" + waitForMerge + "], maxNumSegments[" + maxNumSegments + "]";
+            return "waitForMerge[" + waitForMerge + "], maxNumSegments[" + maxNumSegments + "], onlyExpungeDeletes[" + onlyExpungeDeletes + "], flush[" + flush + "], refresh[" + refresh + "]";
         }
     }
 

modules/elasticsearch/src/main/java/org/elasticsearch/index/engine/robin/RobinEngine.java

@@ -309,7 +309,11 @@ public class RobinEngine extends AbstractIndexShardComponent implements Engine,
                         }
                     }
                 }
-                indexWriter.optimize(maxNumberOfSegments, optimize.waitForMerge());
+                if (optimize.onlyExpungeDeletes()) {
+                    indexWriter.expungeDeletes(optimize.waitForMerge());
+                } else {
+                    indexWriter.optimize(maxNumberOfSegments, optimize.waitForMerge());
+                }
             } catch (Exception e) {
                 throw new OptimizeFailedEngineException(shardId, e);
             } finally {
@@ -317,6 +321,12 @@ public class RobinEngine extends AbstractIndexShardComponent implements Engine,
                 optimizeMutex.set(false);
             }
         }
+        if (optimize.flush()) {
+            flush(new Flush());
+        }
+        if (optimize.refresh()) {
+            refresh(new Refresh(false));
+        }
     }
 
     @Override public void snapshot(SnapshotHandler snapshotHandler) throws EngineException {