oracle: setLastTS always push tso to higher value
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Signed-off-by: you06 <[email protected]>
Signed-off-by: you06 <[email protected]>
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Ref pingcap/tidb#57786
The
setLastTScan be called concurrently, so that thetsoandarrivalmay have different order,lastTSO1.tso < lastTSO2.tsomeanwhilelastTSO1.arrival > lastTSO2.arrival. In this case, whenlastTSis set tolastTSO1, the update oflastTSO2will fail and later when we checklastTS, it's not true last.This PR changes the
setLastTSthat it'll always push thelastTSto the max TSO we received.