kangpinghuang opened a new pull request #3296: spark data preparation process, issue #3295 URL: https://github.com/apache/incubator-doris/pull/3296 To resolve issue #3295, Now this pr accomplish the following tasks: 1. data etl 2. data repartition and bucket 3. rollup data build 4. write data to parquet 5. write job statistics what are todos: 1. to support all udf that hadoop load support 2. optimize performance 3. more test cases
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