txnkv: read through locks#380
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Signed-off-by: youjiali1995 <zlwgx1023@gmail.com>
you06
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you06
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you06
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| return lr.resolveLocks(bo, callerStartTS, locks, true, lite) | ||
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| func (lr *LockResolver) resolveLocks(bo *retry.Backoffer, callerStartTS uint64, locks []*Lock, forWrite bool, lite bool) (int64, []uint64 /*pushed*/, error) { |
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Without forWrite flag, it seems the mechanism for conflict of optimistic transactions is missing.
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Signed-off-by: youjiali1995 <zlwgx1023@gmail.com>
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| var locks []*txnlock.Lock | ||
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| // commitTS < readStartTS | ||
| startTS, _ := s.lockKey([]byte("k1"), []byte("v1"), []byte("k11"), []byte("v11"), true, false) |
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Is there a test for resolving a committed async-commit lock?
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Signed-off-by: youjiali1995 <zlwgx1023@gmail.com>
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Signed-off-by: youjiali1995 <zlwgx1023@gmail.com> Signed-off-by: MyonKeminta <MyonKeminta@users.noreply.github.com>
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Signed-off-by: youjiali1995 zlwgx1023@gmail.com
TiKV supports read-through-lock tikv/tikv#11238. This PR makes use of it:
forWriteparameter ofresolveLocksbecause it's useless(Abort optimistic transaction when prewrite encounters a lock with larger TS #367) and add theforRead. IfforReadis true, resolving secondary locks is asynchronous andcommittedLocksorresolvedLocksis returned to the user.ClientHelperpasses theresolvedLockstoContextto make use of read-through-lock.Should be merged after pingcap/tidb#29898