tgravescs commented on a change in pull request #23242: [SPARK-26285][CORE] accumulator metrics sources for LongAccumulator and Doub… URL: https://github.com/apache/spark/pull/23242#discussion_r243052278
########## File path: examples/src/main/scala/org/apache/spark/examples/AccumulatorMetricsTest.scala ########## @@ -0,0 +1,71 @@ +/* + * 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. + */ + +// scalastyle:off println +package org.apache.spark.examples + +import org.apache.spark.metrics.source.{DoubleAccumulatorSource, LongAccumulatorSource} +import org.apache.spark.sql.SparkSession + +/** + * Usage: AccumulatorMetricsTest [numElem] + * + * This example shows how to register accumulators against the accumulator source. + * A simple RDD is created, and during the map, the accumulators are incremented. + * + * The only argument, numElem, sets the number elements in the collection to parallize. + * + * The result is output to stdout in the driver with the values of the accumulators. Review comment: perhaps we should expand this more saying using ConsoleSink so the metrics going to stdout show up as metrics like AccumulatorSource.my-double-metric ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
