What's wrong with this entry?
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What
The compaction state now records when compaction began (compactingStartTime), enabling elapsed-time display in the UI during long compactions.
Details
compactingStartTimeis set when compaction transitions to active and cleared when it completes.- The value is preserved across state updates so elapsed time can be computed without drift.
Evidence
$x_() function (search for "compactingStartTime")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.