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.mapreduce;
020    
021    import org.apache.hadoop.classification.InterfaceAudience;
022    import org.apache.hadoop.classification.InterfaceStability;
023    
024    // Counters used by Task classes
025    @InterfaceAudience.Public
026    @InterfaceStability.Evolving
027    public enum TaskCounter {
028      MAP_INPUT_RECORDS, 
029      MAP_OUTPUT_RECORDS,
030      MAP_SKIPPED_RECORDS,
031      MAP_OUTPUT_BYTES,
032      MAP_OUTPUT_MATERIALIZED_BYTES,
033      SPLIT_RAW_BYTES,
034      COMBINE_INPUT_RECORDS,
035      COMBINE_OUTPUT_RECORDS,
036      REDUCE_INPUT_GROUPS,
037      REDUCE_SHUFFLE_BYTES,
038      REDUCE_INPUT_RECORDS,
039      REDUCE_OUTPUT_RECORDS,
040      REDUCE_SKIPPED_GROUPS,
041      REDUCE_SKIPPED_RECORDS,
042      SPILLED_RECORDS,
043      SHUFFLED_MAPS, 
044      FAILED_SHUFFLE,
045      MERGED_MAP_OUTPUTS,
046      GC_TIME_MILLIS,
047      CPU_MILLISECONDS,
048      PHYSICAL_MEMORY_BYTES,
049      VIRTUAL_MEMORY_BYTES,
050      COMMITTED_HEAP_BYTES
051    }