release 3.1: port tiflash support from master to release3.1#14537

Merged

eurekaka merged 54 commits intopingcap:release-3.1from lzmhhh123:release-3.1/cherry-pick-tiflash

Feb 14, 2020

+7,213-3,213

Commits on Jan 17, 2020

planner: split avg to count and sum for TableReader cop task (pingcap#11926 )
lzmhhh123
committed
*: add max/avg cop response time for TableReader, IndexReader and IndexLookupReader. (pingcap#12003 )
lzmhhh123
committed
tikv: make region request can send to flash store (pingcap#11652 )
lzmhhh123
committed
executor: support table reader executor read from tiflash. (pingcap#12371 )
lzmhhh123
committed
planner: support a hint to read from tiflash in planner (pingcap#12479 )
lzmhhh123
committed
fix test
lzmhhh123
committed
planner: fix wrong request data type when pushing down avg aggfuncs (pingcap#12051 )

wshwsh12
authored and
lzmhhh123
committed
fix test
lzmhhh123
committed
planner: do not convert filter to range for table scan with tiflash (pingcap#12682 )
lzmhhh123
committed
planner: fix wrong full range for table scan in tiflash (pingcap#12756 )
lzmhhh123
committed
tikv: retry region request when tiflash store not found (pingcap#12928 )
lzmhhh123
committed

Commits on Jan 19, 2020

Commits on Feb 13, 2020