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[SPARK-24678][Spark-Streaming] Give priority in use of 'PROCESS_LOCAL' for spark-streaming #21658

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sharkdtu wants to merge 4 commits into from
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[SPARK-24678][Spark-Streaming] Give priority in use of 'PROCESS_LOCAL' for spark-streaming #21658

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666fb4c
give priority in use of 'PROCESS_LOCAL' for spark-streaming
Jun 28, 2018
adf39a5
optimize the code style
Jul 6, 2018
4750260
add UT
Jul 9, 2018
380f242
fix UT
Jul 10, 2018
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optimize the code style
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sharkdtu committed Jul 6, 2018
commit adf39a53b24687154513028b4104239233c5c760
2 changes: 1 addition & 1 deletion core/src/main/scala/org/apache/spark/rdd/BlockRDD.scala
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Expand Up @@ -30,7 +30,7 @@ private[spark]
class BlockRDD[T: ClassTag](sc: SparkContext, @transient val blockIds: Array[BlockId])
extends RDD[T](sc, Nil) {

@transient lazy val _locations = BlockManager.blockIdsToHosts(blockIds, SparkEnv.get)
@transient lazy val _locations = BlockManager.blockIdsToLocations(blockIds, SparkEnv.get)
@volatile private var _isValid = true

override def getPartitions: Array[Partition] = {
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6 changes: 4 additions & 2 deletions core/src/main/scala/org/apache/spark/storage/BlockManager.scala
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Expand Up @@ -45,6 +45,7 @@ import org.apache.spark.network.netty.SparkTransportConf
import org.apache.spark.network.shuffle.{ExternalShuffleClient, TempFileManager}
import org.apache.spark.network.shuffle.protocol.ExecutorShuffleInfo
import org.apache.spark.rpc.RpcEnv
import org.apache.spark.scheduler.ExecutorCacheTaskLocation
import org.apache.spark.serializer.{SerializerInstance, SerializerManager}
import org.apache.spark.shuffle.ShuffleManager
import org.apache.spark.storage.memory._
Expand Down Expand Up @@ -1554,7 +1555,7 @@ private[spark] class BlockManager(
private[spark] object BlockManager {
private val ID_GENERATOR = new IdGenerator

def blockIdsToHosts(
def blockIdsToLocations(
blockIds: Array[BlockId],
env: SparkEnv,
blockManagerMaster: BlockManagerMaster = null): Map[BlockId, Seq[String]] = {
Expand All @@ -1569,7 +1570,8 @@ private[spark] object BlockManager {

val blockManagers = new HashMap[BlockId, Seq[String]]
for (i <- 0 until blockIds.length) {
blockManagers(blockIds(i)) = blockLocations(i).map(b => s"executor_${b.host}_${b.executorId}")
blockManagers(blockIds(i)) = blockLocations(i).map(
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@jerryshao jerryshao Jul 6, 2018

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nit:

blockLoations(i).map { loc =>
   xxx
}

loc => ExecutorCacheTaskLocation(loc.host, loc.executorId).toString)
}
blockManagers.toMap
}
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