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kv: handle ReadWithinUncertaintyInterval errors on follower reads #57685

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#60021
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kv: handle ReadWithinUncertaintyInterval errors on follower reads#57685
#60021
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nvb
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A-kv-transactionsRelating to MVCC and the transactional model.A-multiregionRelated to multi-regionC-enhancementSolution expected to add code/behavior + preserve backward-compat (pg compat issues are exception)
@nvb

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@nvb
nvb
opened on Dec 8, 2020

Needed for non-blocking transactions: #52745. Also needed for follower reads in general.

Currently, ReadWithinUncertaintyInterval errors assume that they are coming from the leaseholder of a range. But this is not always true. Figure out what to do here.

See readWithinUncertaintyIntervalRetryTimestamp.

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A-kv-transactionsRelating to MVCC and the transactional model.A-multiregionRelated to multi-regionC-enhancementSolution expected to add code/behavior + preserve backward-compat (pg compat issues are exception)

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