001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements.  See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership.  The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the
007     * "License"); you may not use this file except in compliance
008     * with the License.  You may obtain a copy of the License at
009     *
010     *     http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing, software
013     * distributed under the License is distributed on an "AS IS" BASIS,
014     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015     * See the License for the specific language governing permissions and
016     * limitations under the License.
017     */
018    package org.apache.hadoop.log;
019    
020    /**
021     * A log4J Appender that simply counts logging events in three levels:
022     * fatal, error and warn. The class name is used in log4j.properties
023     * @deprecated use {@link org.apache.hadoop.log.metrics.EventCounter} instead
024     */
025    @Deprecated
026    public class EventCounter extends org.apache.hadoop.log.metrics.EventCounter {
027      static {
028        // The logging system is not started yet.
029        System.err.println("WARNING: "+ EventCounter.class.getName() +
030            " is deprecated. Please use "+
031            org.apache.hadoop.log.metrics.EventCounter.class.getName() +
032            " in all the log4j.properties files.");
033      }
034    }