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org.apache.spark.network.shuffle

DownloadFileManager

trait DownloadFileManager extends AnyRef

A manager to create temp block files used when fetching remote data to reduce the memory usage. It will clean files when they won't be used any more.

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  1. abstract def createTempFile(transportConf: TransportConf): DownloadFile

    Create a temp block file.

  2. abstract def registerTempFileToClean(file: DownloadFile): Boolean

    Register a temp file to clean up when it won't be used any more.

    Register a temp file to clean up when it won't be used any more. Return whether the file is registered successfully. If false, the caller should clean up the file by itself.

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