Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/9983#discussion_r45937461
--- Diff:
core/src/main/scala/org/apache/spark/rdd/ReliableCheckpointRDD.scala ---
@@ -151,6 +200,57 @@ private[spark] object ReliableCheckpointRDD extends
Logging {
}
}
+ def writePartitionerToCheckpointDir(
+ sc: SparkContext, partitioner: Partitioner, checkpointDirPath: Path):
Unit = {
+ try {
+ val partitionerFilePath = new Path(checkpointDirPath,
checkpointPartitionerFileName)
+ val bufferSize = sc.conf.getInt("spark.buffer.size", 65536)
+ val fs = partitionerFilePath.getFileSystem(sc.hadoopConfiguration)
+ val fileOutputStream = fs.create(partitionerFilePath, false,
bufferSize)
+ val serializer = SparkEnv.get.serializer.newInstance()
+ val serializeStream = serializer.serializeStream(fileOutputStream)
+ Utils.tryWithSafeFinally {
+ serializeStream.writeObject(partitioner)
+ } {
+ serializeStream.close()
+ }
+ logDebug(s"Written partitioner to $partitionerFilePath")
+ } catch {
+ case NonFatal(e) =>
+ logWarning(s"Error writing partitioner $partitioner to
$checkpointDirPath")
+ }
+ }
+
+ def readCheckpointedPartitionerFile(
--- End diff --
maybe `readPartitionerFromCheckpoint`?
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