Github user nongli commented on the pull request:
https://github.com/apache/spark/pull/10498#issuecomment-167649759
@cloud-fan
> currently we don't shuffle before writing partitioned data, which means
we will have same partition data in different RDD blocks, and that's why we
have multi-files for one partition, and we will also have multi-files for one
bucket, is that safe?
This is safe but how can we get in this state from a single write. There
must have been a partitionBy before right?
> hive support having bucketing without partitioning, should we support it?
Why not? If this hard to support?
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