1/*2 * Licensed to the Apache Software Foundation (ASF) under one3 * or more contributor license agreements. See the NOTICE file4 * distributed with this work for additional information5 * regarding copyright ownership. The ASF licenses this file6 * to you under the Apache License, Version 2.0 (the7 * "License"); you may not use this file except in compliance8 * with the License. You may obtain a copy of the License at9 *10 * http://www.apache.org/licenses/LICENSE-2.011 *12 * Unless required by applicable law or agreed to in writing, software13 * distributed under the License is distributed on an "AS IS" BASIS,14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.15 * See the License for the specific language governing permissions and16 * limitations under the License.17 */18package org.apache.giraph.block_app.library.gc;
1920import org.apache.giraph.block_app.framework.api.BlockWorkerContextSendApi;
21import org.apache.giraph.block_app.framework.piece.PieceWithWorkerContext;
22import org.apache.giraph.types.NoMessage;
23import org.apache.hadoop.io.Writable;
24import org.apache.hadoop.io.WritableComparable;
2526import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
2728/**29 * Dummy piece to hint System.gc()30 */31publicclassWorkerGCPieceextends PieceWithWorkerContext<WritableComparable,
32 Writable, Writable, NoMessage, Object, NoMessage, Object> {
3334 @Override
35 @SuppressFBWarnings(value = "DM_GC")
36publicvoid workerContextSend(
37 BlockWorkerContextSendApi<WritableComparable, NoMessage> workerContextApi,
38 Object executionStage,
39 Object workerValue) {
40 System.gc();
41 }
42 }