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raft: remove unused read-only requests #120613

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merged 2 commits into from
Apr 9, 2024
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@pav-kv pav-kv commented Mar 17, 2024

This PR removes the read-only requests from pkg/raft. We don't use them in CRDB, and the leases implementation is known to be incorrect (e.g. see etcd-io/raft#166 and etcd-io/etcd#10082).

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@pav-kv pav-kv force-pushed the rm-read-only branch 4 times, most recently from 5cdef50 to 8a367c9 Compare March 17, 2024 23:08
@pav-kv pav-kv force-pushed the rm-read-only branch 2 times, most recently from fc2b600 to 449f9d1 Compare April 8, 2024 13:36
@pav-kv pav-kv marked this pull request as ready for review April 8, 2024 13:37
@pav-kv pav-kv requested a review from a team as a code owner April 8, 2024 13:37
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Reviewed 14 of 14 files at r1, 1 of 1 files at r2, all commit messages.
Reviewable status: :shipit: complete! 0 of 0 LGTMs obtained (waiting on @pav-kv)


-- commits line 8 at r2:
Does this allow us to delete the Context field from the Message proto?


pkg/raft/raftpb/raft.proto line 69 at r1 (raw file):

	// raft/util_test.go.

  reserved 15, 16; // used to be MsgReadIndex(Resp)

nit: tab to align with above.

Epic: none
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Epic: none
Release note: none
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Reviewable status: :shipit: complete! 0 of 0 LGTMs obtained (waiting on @pav-kv)


-- commits line 8 at r2:

Previously, nvanbenschoten (Nathan VanBenschoten) wrote…

Does this allow us to delete the Context field from the Message proto?

This field is still used by other bits, e.g. by leader transfers:

r.send(pb.Message{To: id, Term: term, Type: voteMsg, Index: last.index, LogTerm: last.term, Context: ctx})
.


pkg/raft/raftpb/raft.proto line 69 at r1 (raw file):

Previously, nvanbenschoten (Nathan VanBenschoten) wrote…

nit: tab to align with above.

Done.

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:lgtm:

Reviewed 1 of 2 files at r3, 1 of 1 files at r4, all commit messages.
Reviewable status: :shipit: complete! 1 of 0 LGTMs obtained (waiting on @pav-kv)

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pav-kv commented Apr 9, 2024

bors r=nvanbenschoten

@craig craig bot merged commit e9d1b46 into cockroachdb:master Apr 9, 2024
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@pav-kv pav-kv deleted the rm-read-only branch April 9, 2024 19:09
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3 participants