asterix-metadata/src/main/java/org/apache/asterix/metadata/GarbageCollector.java

/*
 * 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.asterix.metadata;

/**
 * Periodically recycle temporary datasets.
 *
 * @author yingyib
 */
public class GarbageCollector implements Runnable {

    private static long CLEANUP_PERIOD = 3600 * 24;

    @Override
    public void run() {
        try {
            synchronized (this) {
                this.wait(CLEANUP_PERIOD);
            }
            MetadataManager.INSTANCE.cleanupTempDatasets();
        } catch (Exception e) {
            // Prints the stack trace to log.
            e.printStackTrace();
        }
    }

}