Github user dragos commented on a diff in the pull request:
https://github.com/apache/spark/pull/7600#discussion_r35668212
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/scheduler/rate/RateEstimator.scala
---
@@ -0,0 +1,59 @@
+/*
+ * 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.streaming.scheduler.rate
+
+import org.apache.spark.SparkConf
+import org.apache.spark.SparkException
+
+/**
+ * A component that estimates the rate at wich an InputDStream should
ingest
+ * elements, based on updates at every batch completion.
+ */
+private[streaming] trait RateEstimator extends Serializable {
+
+ /**
+ * Computes the number of elements the stream attached to this
`RateEstimator`
+ * should ingest per second, given an update on the size and completion
+ * times of the latest batch.
+ *
+ * @param time The timetamp of the current batch interval that just
finished
+ * @param elements The number of elements that were processed in this
batch
+ * @param processingDelay The time in ms that took for the job to
complete
+ * @param schedulingDelay The time in ms that the job spent in the
scheduling queue
+ */
+ def compute(
+ time: Long,
+ elements: Long,
+ processingDelay: Long,
+ schedulingDelay: Long): Option[Double]
+}
+
+object RateEstimator {
+
+ /**
+ * Return a new RateEstimator based on the value of
`spark.streaming.RateEstimator`.
+ *
+ * @return None if there is no configured estimator, otherwise an
instance of RateEstimator
+ * @throws IllegalArgumentException if there is a configured
RateEstimator that doesn't match any
+ * known estimators.
+ */
+ def create(conf: SparkConf): Option[RateEstimator] =
--- End diff --
ok
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
