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testdata: add a lagging commit test #137

Merged
merged 1 commit into from
Jan 31, 2024
Merged

testdata: add a lagging commit test #137

merged 1 commit into from
Jan 31, 2024

Commits on Jan 25, 2024

  1. testdata: add a lagging commit test 

    This commit adds a test demonstrating the effect of delayed commit on a
follower node after a network hiccup between the leader and this
follower.

In the described scenario, after the moment of committing an entry on
the leader, it takes HeartbeatInterval + 3/2 * RTT until the follower
learns this entry is committed.

This is suboptimal, and could take HeartbeatInverval + 1/2 * RTT if the
leader didn't cut the commit index at Progress.Match before sending it
to the follower.

Signed-off-by: Pavel Kalinnikov <[email protected]>
    @pav-kv
    pav-kv committed Jan 25, 2024
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