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From samarthjain <...@git.apache.org>
Subject [GitHub] phoenix pull request: working additions of pherf to phoenix as a p...
Date Wed, 11 Mar 2015 18:47:18 GMT
Github user samarthjain commented on a diff in the pull request:

    https://github.com/apache/phoenix/pull/41#discussion_r26242921
  
    --- Diff: phoenix-pherf/src/main/java/org/apache/phoenix/pherf/jmx/MonitorManager.java
---
    @@ -0,0 +1,174 @@
    +/*
    + * 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.phoenix.pherf.jmx;
    +
    +import org.apache.phoenix.pherf.PherfConstants;
    +import org.apache.phoenix.pherf.exception.FileLoaderRuntimeException;
    +import org.apache.phoenix.pherf.jmx.monitors.Monitor;
    +import org.apache.phoenix.pherf.result.file.ResultFileDetails;
    +import org.apache.phoenix.pherf.result.impl.CSVResultHandler;
    +import org.apache.phoenix.pherf.result.Result;
    +import org.apache.phoenix.pherf.result.ResultHandler;
    +import org.apache.phoenix.util.DateUtil;
    +
    +import javax.management.*;
    +import java.io.IOException;
    +import java.lang.management.ManagementFactory;
    +import java.util.*;
    +
    +/**
    + * This class starts JMX stats for the configured monitors. Monitors should be configured
in MonitorDetails Enum.
    + * Each stat implements {@link org.apache.phoenix.pherf.jmx.monitors.Monitor}.
    + *
    + * For the duration of any Pherf run, when the configured {@link org.apache.phoenix.pherf.PherfConstants#MONITOR_FREQUENCY}
    + * is reached a snapshot of each monitor is taken and dumped out to a log file.
    + */
    +public class MonitorManager implements Runnable {
    --- End diff --
    
    Can an instance of MonitorManager be modified/read by multiple threads at the same time?



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