org.apache.spark.shuffle.FetchFailedException: Failed to connect to xxx.hadoop.com:7337

在大規模數據處理中，這是個比較常見的錯誤。 報錯提示 報錯1：   FetchFailed(BlockManagerId(846, xxx.hadoop.com, 7337, None), shuffleId=262, mapId=96, reduceId=122, message= org.apache.spark.shuffle.FetchFailedException: Failed to

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