spark ReceivedBlockInfo 源码
spark ReceivedBlockInfo 代码
文件路径：/streaming/src/main/scala/org/apache/spark/streaming/scheduler/ReceivedBlockInfo.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.scheduler
import org.apache.spark.storage.StreamBlockId
import org.apache.spark.streaming.receiver.{ReceivedBlockStoreResult, WriteAheadLogBasedStoreResult}
import org.apache.spark.streaming.util.WriteAheadLogRecordHandle
/** Information about blocks received by the receiver */
private[streaming] case class ReceivedBlockInfo(
streamId: Int,
numRecords: Option[Long],
metadataOption: Option[Any],
blockStoreResult: ReceivedBlockStoreResult
) {
require(numRecords.isEmpty || numRecords.get >= 0, "numRecords must not be negative")
@volatile private var _isBlockIdValid = true
def blockId: StreamBlockId = blockStoreResult.blockId
def walRecordHandleOption: Option[WriteAheadLogRecordHandle] = {
blockStoreResult match {
case walStoreResult: WriteAheadLogBasedStoreResult => Some(walStoreResult.walRecordHandle)
case _ => None
}
}
/** Is the block ID valid, that is, is the block present in the Spark executors. */
def isBlockIdValid(): Boolean = _isBlockIdValid
/**
* Set the block ID as invalid. This is useful when it is known that the block is not present
* in the Spark executors.
*/
def setBlockIdInvalid(): Unit = {
_isBlockIdValid = false
}
}
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