hadoop TraceScope 源码
haddop TraceScope 代码
文件路径：/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/tracing/TraceScope.java
/**
* 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.hadoop.tracing;
import java.io.Closeable;
public class TraceScope implements Closeable {
Span span;
public TraceScope(Span span) {
this.span = span;
}
// Add tag to the span
public void addKVAnnotation(String key, String value) {
}
public void addKVAnnotation(String key, Number value) {
}
public void addTimelineAnnotation(String msg) {
}
public Span span() {
return span;
}
public Span getSpan() {
return span;
}
public void reattach() {
}
public void detach() {
}
public void close() {
if (span != null) {
span.close();
}
}
}
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