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Upgrade BookKeeper to 4.14.1 (apache#10686)
* upgrade BookKeeper to 4.14.0 * format code * upgrade bookkeeper to 4.14.1 to fix prometheus metric bug * update license Co-authored-by: chenhang <[email protected]>
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61 changes: 61 additions & 0 deletions
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...ker/src/main/java/org/apache/pulsar/broker/stats/prometheus/metrics/LongAdderCounter.java
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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.pulsar.broker.stats.prometheus.metrics; | ||
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import java.util.concurrent.atomic.LongAdder; | ||
import org.apache.bookkeeper.stats.Counter; | ||
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/** | ||
* {@link Counter} implementation based on {@link LongAdder}. | ||
* | ||
* <p>LongAdder keeps a counter per-thread and then aggregates to get the result, in order to avoid contention between | ||
* multiple threads. | ||
*/ | ||
public class LongAdderCounter implements Counter { | ||
private final LongAdder counter = new LongAdder(); | ||
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public LongAdderCounter() { | ||
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} | ||
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@Override | ||
public void clear() { | ||
counter.reset(); | ||
} | ||
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@Override | ||
public void inc() { | ||
counter.increment(); | ||
} | ||
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@Override | ||
public void dec() { | ||
counter.decrement(); | ||
} | ||
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@Override | ||
public void add(long delta) { | ||
counter.add(delta); | ||
} | ||
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@Override | ||
public Long get() { | ||
return counter.sum(); | ||
} | ||
} |
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