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The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.

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/*
* 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.cassandra.service;

public interface GCInspectorMXBean
{
    /* @returns { interval (ms), max(gc real time (ms)), sum(gc real time (ms)), sum((gc real time (ms))^2), sum(gc bytes), count(gc) }
     * 
     */
    double[] getAndResetStats();
    void setGcWarnThresholdInMs(long threshold);
    long getGcWarnThresholdInMs();
    void setGcLogThresholdInMs(long threshold);
    long getGcLogThresholdInMs();
    long getStatusThresholdInMs();
}