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ROADMAP: Update roadmap #499

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Jun 14, 2018
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ROADMAP: Update roadmap #499

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ROADMAP: Update roadmap
shenli Jun 13, 2018
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shenli Jun 13, 2018
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shenli Jun 13, 2018
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25 changes: 17 additions & 8 deletions ROADMAP.md
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Expand Up @@ -10,21 +10,30 @@ This document defines the roadmap for TiDB development.
## TiDB:

- [ ] Optimizer
- [ ] Refactor Ranger
- [ ] Optimize the statistics info
- [x] Refactor Ranger
- [ ] Optimize the cost model
- [ ] Join Reorder
- [ ] Statistics
- [x] Update statistics dynamically according to the query feedback
- [x] Analyze table automatically
- [ ] Improve the accuracy of Row Cout estimation
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Row Cout -> Row Count

- [ ] Executor
- [ ] Pushdown the Projection operator to the Coprocessor
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Pushdown -> Push down

Note: Use the two words version as a verb. "pushdown" is usually used as a noun.

- [ ] Improve the performance of the HashJoin operator
- [ ] Parallel Operators
- [ ] Compact Row Format to reduce memory usage
- [x] Projection
- [ ] Aggregation
- [ ] Sort
- [x] Compact Row Format to reduce memory usage
- [ ] File Sort
- [ ] Support View
- [ ] Support Window Function
- [ ] View
- [ ] Window Function
- [ ] Common Table Expression
- [ ] Table Partition
- [ ] Hash time index to resolve the issue with hot regions
- [ ] Reverse Index
- [ ] Cluster Index
- [ ] Improve DDL
- [x] Speed up Add Index operation
- [ ] Parallel DDL
- [ ] Support `utf8_general_ci` collation

## TiKV:
Expand Down Expand Up @@ -58,7 +67,7 @@ This document defines the roadmap for TiDB development.
## TiSpark:

- [ ] Limit / Order push-down
- [ ] Access through the DAG interface and deprecate the Select interface
- [x] Access through the DAG interface and deprecate the Select interface
- [ ] Index Join and parallel merge join
- [ ] Data Federation

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