spark KinesisReadConfigurations 源码
spark KinesisReadConfigurations 代码
文件路径：/connector/kinesis-asl/src/main/scala/org/apache/spark/streaming/kinesis/KinesisReadConfigurations.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.streaming.kinesis
import org.apache.spark.network.util.JavaUtils
import org.apache.spark.streaming.StreamingContext
/**
* Configurations to pass to the [[KinesisBackedBlockRDD]].
*
* @param maxRetries: The maximum number of attempts to be made to Kinesis. Defaults to 3.
* @param retryWaitTimeMs: The interval between consequent Kinesis retries.
* Defaults to 100ms.
* @param retryTimeoutMs: The timeout in milliseconds for a Kinesis request.
* Defaults to batch duration provided for streaming,
* else uses 10000 if invoked directly.
*/
private[kinesis] case class KinesisReadConfigurations(
maxRetries: Int,
retryWaitTimeMs: Long,
retryTimeoutMs: Long)
private[kinesis] object KinesisReadConfigurations {
def apply(): KinesisReadConfigurations = {
KinesisReadConfigurations(maxRetries = DEFAULT_MAX_RETRIES,
retryWaitTimeMs = JavaUtils.timeStringAsMs(DEFAULT_RETRY_WAIT_TIME),
retryTimeoutMs = DEFAULT_RETRY_TIMEOUT)
}
def apply(ssc: StreamingContext): KinesisReadConfigurations = {
KinesisReadConfigurations(
maxRetries = ssc.sc.getConf.getInt(RETRY_MAX_ATTEMPTS_KEY, DEFAULT_MAX_RETRIES),
retryWaitTimeMs = JavaUtils.timeStringAsMs(
ssc.sc.getConf.get(RETRY_WAIT_TIME_KEY, DEFAULT_RETRY_WAIT_TIME)),
retryTimeoutMs = ssc.graph.batchDuration.milliseconds)
}
/**
* SparkConf key for configuring the maximum number of retries used when attempting a Kinesis
* request.
*/
val RETRY_MAX_ATTEMPTS_KEY = "spark.streaming.kinesis.retry.maxAttempts"
/**
* SparkConf key for configuring the wait time to use before retrying a Kinesis attempt.
*/
val RETRY_WAIT_TIME_KEY = "spark.streaming.kinesis.retry.waitTime"
/**
* Default value for the RETRY_MAX_ATTEMPTS_KEY
*/
val DEFAULT_MAX_RETRIES = 3
/**
* Default value for the RETRY_WAIT_TIME_KEY
*/
val DEFAULT_RETRY_WAIT_TIME = "100ms"
/**
* Default value for the retry timeout
*/
val DEFAULT_RETRY_TIMEOUT = 10000
}
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