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Posted to reviews@iotdb.apache.org by GitBox <gi...@apache.org> on 2020/02/07 09:25:04 UTC
[GitHub] [incubator-iotdb] liutaohua edited a comment on issue #713:
[IOTDB-418] New series reader
liutaohua edited a comment on issue #713: [IOTDB-418] New series reader
URL: https://github.com/apache/incubator-iotdb/pull/713#issuecomment-583217480
In this pr, we have made several major modifications:
1. Designing a new SeriesReader which unifies the reading of seq and unseq files, and based on which, four ways are expanded to fetch or calculate data [iotdb-418]
2. Optimizing aggregate query and aggregate in group by. Different statistics under the same path are completed in one traversal [iotdb-452, iotdb-335]
3. Refactor AggregateResult to make it simpler and clearer to use
4. Adding traversal method for `TVList`, returned `List<ReadonlyMemChunk>` in `TsFileResource`, greatly reduced the copy of in-memory data [iotdb-433]
5. Simplifying the (PlanExecutor) QueryProcessExecutor logic, removing the MemIntQpExecutor test class, merging query and non-query methods
6. There are also class changes that are related to refactoring
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