    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
    019    package org.apache.hadoop.metrics2;
    020
    021    import org.apache.hadoop.classification.InterfaceAudience;
    022    import org.apache.hadoop.classification.InterfaceStability;
    023
    024    /**
    025     * Interface to provide immutable meta info for metrics
    026     */
    027    @InterfaceAudience.Public
    028    @InterfaceStability.Evolving
    029    public interface MetricsInfo {
    030      /**
    031       * @return the name of the metric/tag
    032       */
    033      String name();
    034
    035      /**
    036       * @return the description of the metric/tag
    037       */
    038      String description();
    039    }