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From nongli <...@git.apache.org>
Subject [GitHub] spark pull request: [SPARK-12649][SQL][WIP] support reading bucket...
Date Tue, 05 Jan 2016 21:04:41 GMT
Github user nongli commented on the pull request:

    https://github.com/apache/spark/pull/10604#issuecomment-169133603
  
    @cloud-fan I'm not sure I understand your question. We are guaranteed that for a bucketed
data set, each file in HDFS is for the same bucket. We need to coalesce however the input
split decided to split the file back into one RDD partition per bucket, grouping using the
file name.


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