PingCAP.com
TiFlash
Region 1
TiKV Node 1
Store 1
Region 2
Region 3
Region 4
Region 2
TiKV Node 3
Store 3
Region 3
Region 4
Region 1
Region 4
TiKV Node 2
Store 2
Region 3
Region 2
Region 1
TiFlash Node 1
TiFlash Node 2
TiFlash Extension Cluster
columnar storage engine
TiKV Cluster
row based storage engine
TiDB
/
TiSpark
SELECT AVG(s.price) FROM prod p, sales s
WHERE p.pid = s.pid
AND p.batch_id = ‘B1328’;
Index Scan(batch_id = B1328)
TableScan(price,pid)
Raft
Log
Raft
Log
Raft
Log
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