Apache Kylin : Analytical Data Warehouse for Big Data
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Notes: Currently Apache Spark 2.4.6 which Kylin 4.0 used only supports filter out unwanted data through the min-max index of RowGroup in parquet files, it means that if there are some RowGroups in one parquet file, Spark will filter out unwanted data by the min-mas max index of RowGroup, but if one parquet file only includes one RowGroup, filter doesn't make effect.
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