batcheval: add MVCC-compliant RevertRange variant
#76478
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Since `RevertRange` mutates MVCC history, we want them to be alone in a batch. The DistSender will split any batches that have multiple such requests. Release note: None
This patch adds a method `NextKeyIgnoringTime()` for `MVCCIncrementalIterator`. This can be used to find the next key (as opposed to version) of the iterator, ignoring the time bounds. It's similar to `NextIgnoringTime()`, but calls `NextKey()` instead of `Next()` on the underlying iterator. Release note: None
This adds a new parameter `ExperimentalPreserveHistory` to `RevertRange` which, rather than clearing keys above the target time, will write new values or tombstones that reflect the state at the target time. For long runs of deleted keys, this will instead drop an MVCC range tombstone. This makes the command respect e.g. MVCC immutability, the closed timestamp, and timestamp cache. Note that MVCC range tombstones are currently experimental, and as such this parameter is also experimental. Callers must call `storage.CanUseExperimentalMVCCRangeTombstones()` before using it. Release note: None
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TFTRs! bors r=aliher1911,dt |
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Unrelated flake. Third time's the charm! bors retry |
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Feb 23, 2022
76921: storage: revert experimental MVCC range tombstones r=aliher1911 a=erikgrinaker This reverts most of #76131, #76203, and #76478 -- except minor changes that were unrelated to the range tombstones themselves. This leaves a gap for cluster version `Internal:78` -- I think that's probably fine, but I've left a comment. Co-authored-by: Erik Grinaker <[email protected]>
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roachpb: add
isAloneforRevertRangeRequestSince
RevertRangemutates MVCC history, we want them to be alone in abatch. The DistSender will split any batches that have multiple such
requests.
Release note: None
storage: add
NextKeyIgnoringTime()forMVCCIncrementalIteratorThis patch adds a method
NextKeyIgnoringTime()forMVCCIncrementalIterator. This can be used to find the next key (asopposed to version) of the iterator, ignoring the time bounds. It's
similar to
NextIgnoringTime(), but callsNextKey()instead ofNext()on the underlying iterator.Release note: None
batcheval: add MVCC-compliant
RevertRangevariantThis adds a new parameter
ExperimentalPreserveHistorywhich, ratherthan clearing keys above the target time, will write new values or
tombstones that reflect the state at the target time. For long runs of
new keys, this will instead drop an MVCC range tombstone. This makes the
command respect e.g. MVCC immutability, the closed timestamp, and
timestamp cache.
Note that MVCC range tombstones are currently experimental, and as such
this parameter is also experimental. Callers must call
storage.CanUseExperimentalMVCCRangeTombstones()before using it.Resolves #70416.
Release note: None