Support compacting files to different temperatures in FIFO compaction #11428
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include/rocksdb/advanced_options.h
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| // Dynamically changeable through SetOptions() API, e.g., | ||
| // SetOptions("compaction_options_fifo", | ||
| // "{file_temperature_age_thresholds={ | ||
| // {age=20;temperature=kCold}:{age=10;temperature=kWarm}}") |
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These seem out of order. Above it says "The elements should be in increasing order with respect to age field".
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Thanks for catching this. I've updated the comment and added related validation and unit test too.
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Summary:
CompactionOptionsFIFO::file_temperature_age_thresholdsthat allows user to specify age thresholds for compacting files to different temperatures. File temperature can be used to store files in different storage media. The new options allows specifying multiple temperature-age pairs. The option uses struct for a temperature-age pair to use the existing parsing functionality to make the option dynamically settable.age_for_warmthat was added for a similar purpose.FIFOCompactionPicker::PickTemperatureChangeCompaction.Test plan: adapted unit tests that were for
age_for_warmto this new option.