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improves monitor tserver view #6329
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63 changes: 63 additions & 0 deletions
63
core/src/main/java/org/apache/accumulo/core/metrics/MonitorMeterRegistry.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| /* | ||
| * 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 | ||
| * | ||
| * https://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.accumulo.core.metrics; | ||
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| import java.time.Duration; | ||
| import java.util.concurrent.TimeUnit; | ||
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| import io.micrometer.core.instrument.Clock; | ||
| import io.micrometer.core.instrument.step.StepMeterRegistry; | ||
| import io.micrometer.core.instrument.step.StepRegistryConfig; | ||
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| public class MonitorMeterRegistry extends StepMeterRegistry { | ||
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| public static final Duration STEP = Duration.ofSeconds(30); | ||
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| private static final StepRegistryConfig CONFIG = new StepRegistryConfig() { | ||
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| @Override | ||
| public String prefix() { | ||
| return "monitor"; | ||
| } | ||
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| @Override | ||
| public String get(String key) { | ||
| return null; | ||
| } | ||
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| @Override | ||
| public Duration step() { | ||
| return STEP; | ||
| } | ||
| }; | ||
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| public MonitorMeterRegistry() { | ||
| super(CONFIG, Clock.SYSTEM); | ||
| } | ||
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| @Override | ||
| protected void publish() { | ||
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| } | ||
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| @Override | ||
| protected TimeUnit getBaseTimeUnit() { | ||
| return TimeUnit.MILLISECONDS; | ||
| } | ||
| } |
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The
nullparameter here is for the column description. It's used as the text displayed in the Monitor UI when hovering over the column header in a table. Whennullis present the value defaults to the property description. In some cases we may want to be more descriptive in the monitor as "Hold Time" may not mean something to a novice (or experienced) user. In some cases we could be very descriptive in the Monitor telling the user what the column value means and what may cause it. For example,