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    • org.apache.hadoop.mapreduce.task.reduce.Shuffle$ShuffleError: error in shuffle in fetcher#1 at at at org.apache.hadoop.mapred.Child$ at Method) at at at org.apache.hadoop.mapred.Child.main( Caused by: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out. at org.apache.hadoop.mapreduce.task.reduce.ShuffleScheduler.checkReducerHealth( at org.apache.hadoop.mapreduce.task.reduce.ShuffleScheduler.copyFailed( at org.apache.hadoop.mapreduce.task.reduce.Fetcher.copyFromHost( at

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