Exit cold flush early when there is nothing to merge #1780
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richardartoul
approved these changes
Jun 26, 2019
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Sure thing, added one |
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What this PR does / why we need it:
Currently, cold flushes happen unnecessarily because
dirtySeriesToWritecontains emptyseriesLists (since it is a shared resource between shards). Checking for data indirtySeriesis a sufficient condition in figuring out whether a merge should actually happen or not.Special notes for your reviewer: N/A
Does this PR introduce a user-facing and/or backwards incompatible change?:
Does this PR require updating code package or user-facing documentation?: