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This pull request adds a sortedIterator method to UnsafeFixedWidthAggregationMap that sorts its data in-place by the grouping key. This is needed so we can fallback to external sorting for aggregation. Author: Reynold Xin <rxin@databricks.com> Closes #7849 from rxin/bytes2bytes-sorting and squashes the following commits: 75018c6 [Reynold Xin] Updated documentation. 81a8694 [Reynold Xin] [SPARK-9520][SQL] Support in-place sort in UnsafeFixedWidthAggregationMap. |
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