compact() should not update queue lengths if a compaction has locked the files to be compacted [Port to 2.0 branch] #22142
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davidby-influx
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Aug 17, 2021
When the compaction planner runs, if it cannot acquire a lock on the files it plans to compact, it returns a nil list of compaction groups. This, in turn, sets the engine statistics for compactions queues to zero, which is incorrect. Instead, use the length of pending files which would have been returned. closes #22138 (cherry picked from commit 7d3efe1) closes #22141 (cherry picked from commit 9923d2e) closes #22142
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Aug 18, 2021
When the compaction planner runs, if it cannot acquire a lock on the files it plans to compact, it returns a nil list of compaction groups. This, in turn, sets the engine statistics for compactions queues to zero, which is incorrect. Instead, use the length of pending files which would have been returned. closes #22138 (cherry picked from commit 7d3efe1) closes #22141 (cherry picked from commit 9923d2e) closes #22142
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Port #22138 to the 2.0 branch
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