答复: How to deal with string column data for spark mlib?

["Triones,Deng(vip.com)" <tr...@vipshop.com>]

Hi spark dev,

         I am using spark 2 to write orc file to hdfs. I have one questions about the savemode.

         My use case is this. When I write data into hdfs. If one task failed I hope the file that the task created should be delete and the retry task can write all data, that is to say,
If I have the data 1 to 100 in this task, when the task which write 1 to 100 failed at first, then the task scheduler reschedule the partition task , the data in hdfs should only have the data 1 to 100. Not double 1 and so on.

If so which kind  of savemode should I use. I the FileFormatWriter.scala the file name rule contains one UUID,so I am in mistake..


Thanks


Triones

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