Liangliang Gu

because of this issue https://github.com/pingcap/tispark/issues/1692, year type index scan is disable

include 1. read and write rate 2. number of spark task 3. number of tikv instance 4. number of regions 5. ...

**Is your feature request related to a problem? Please describe.** currently tispark use the following api to get region info ``` public static List getRegionsByTable(TiSession session, TiTableInfo table) { ArrayList...

**Is your feature request related to a problem? Please describe.** current json implementation is too slow (compare with tidb) - is there any json library faster than gson? - every...

**Is your feature request related to a problem? Please describe.** add find bug tool to ci, e.g. `google error`

Batch Write support write to Time Type

Add follower read support like tidb does, see https://github.com/pingcap/tidb/pull/11347

schedule task close to Data (TiKV)

cause we disable it here https://github.com/pingcap/tispark/pull/1391