spark StreamingExamples 源码
spark StreamingExamples 代码
文件路径：/examples/src/main/scala/org/apache/spark/examples/streaming/StreamingExamples.scala
/*
* 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.examples.streaming
import org.apache.logging.log4j.Level
import org.apache.logging.log4j.core.config.Configurator
import org.apache.spark.internal.Logging
/** Utility functions for Spark Streaming examples. */
object StreamingExamples extends Logging {
/** Set reasonable logging levels for streaming if the user has not configured log4j. */
def setStreamingLogLevels(): Unit = {
if (Logging.islog4j2DefaultConfigured()) {
// We first log something to initialize Spark's default logging, then we override the
// logging level.
logInfo("Setting log level to [WARN] for streaming example." +
" To override add a custom log4j.properties to the classpath.")
Configurator.setRootLevel(Level.WARN)
}
}
}
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