Yilin Chen

After setting `TIUP_CLUSTER_DEBUG` envvar, it shows an `i/o timeout`: ``` ❯ TIUP_CLUSTER_DEBUG=true tiup cluster --version Starting component `cluster`: /home/yilin/.tiup/components/cluster/v1.5.1/tiup-cluster --version tiup version 1.5.1 tiup Go Version: go1.16.5 Git Ref: v1.5.1...

> The component tarball used to deploy them are decompressed on the (remote) deploy server, so it's possible the compress format is not supported by the target system. This is...

@youjiali1995 It seems a bit strange to exclude `txnLockFast` because TTLs of these locks should be short and can be resolved in a short time. With flow control, at least...

Per-DC max_ts seems like the simplest solution. ~~wish we had vector clock so much~~

> Is async commit disabled for global transactions at the moment? AFAIK it's not implemented yet.

> > Read k1 from DC1, start_ts (allocated from local allocator 1) = 100, then the max_ts is updated to 100; > > Write k2 from DC2, start_ts (allocated from...

>The data needs some time to schedule before it can actually be transferred to another DC, and before the schedule is complete, the binding between the data and the DC...

cc @nrc @youjiali1995 @MyonKeminta @cfzjywxk

> Did you mean that the transaction's lock can be skipped if we did CheckSecondaryLocks on one if its keys that's not yet locked? > Sounds correct, but I'm afraid...

> What would happen if we just leave the extra fields? I assumed older TiKV would just ignore them? If not can we write a small patch to do that...