Firewall block data-node for a while in transaction, data lost its concurrency

[actiontech-bot]

Raised by: @FlyingMao Steps:

1. Prepare: sbtest1 is hash sharding table
2. begin;
3. insert into sbtest1 values(1,1,1,1),(2,2,2,2),(3,3,3,3),(4,4,4,4);
4. Block a data-node by firewall
5. Wait 10 min, and Unblock
6. Blocked data-node is still in transaction, while other data-nodes committed the data.