UtilityForHadoop3

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6. def copyMerge(srcFS: FileSystem, srcDir: Path, dstFS: FileSystem, dstFile: Path, deleteSource: Boolean, hadoopConfig: Configuration): Boolean

   

   Re-implementation of the Hadoop CopyMerge() method, which has been removed in Hadoop 3.

   Re-implementation of the Hadoop CopyMerge() method, which has been removed in Hadoop 3. https://www.oreilly.com/library/view/hadoop-the-definitive/9780596521974/ch04.html That implementation checks for the compression codec, and decompresses the input files based on that codec. The output file is compressed with BZip2

7. def copyMergeOldWay(srcFS: FileSystem, srcDir: Path, dstFS: FileSystem, dstFile: Path, deleteSource: Boolean, conf: Configuration): Boolean

   

   Re-implementation of the Hadoop CopyMerge() method, which has been removed in Hadoop 3

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