spark ReportsSourceMetrics 源码
spark ReportsSourceMetrics 代码
文件路径：/sql/catalyst/src/main/java/org/apache/spark/sql/connector/read/streaming/ReportsSourceMetrics.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.spark.sql.connector.read.streaming;
import java.util.Map;
import java.util.Optional;
import org.apache.spark.annotation.Evolving;
/**
* A mix-in interface for {@link SparkDataStream} streaming sources to signal that they can report
* metrics.
*
* @since 3.2.0
*/
@Evolving
public interface ReportsSourceMetrics extends SparkDataStream {
/**
* Returns the metrics reported by the streaming source with respect to
* the latest consumed offset.
*
* @param latestConsumedOffset the end offset (exclusive) of the latest triggered batch.
*/
Map<String, String> metrics(Optional<Offset> latestConsumedOffset);
}
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