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Expose configuration of Compactio Percentage targets

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I think these should be set differently, so make them configurable.
This commit is contained in:
Martin Sumner 2018-07-23 12:46:42 +01:00
parent 92bd2513c1
commit 66a75923e8
5 changed files with 105 additions and 38 deletions
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28
priv/leveled.schema
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@ -89,11 +89,35 @@
%% In a single compaction run, what is the maximum number of consecutive files
%% which may be compacted.
{mapping, "leveled.max_run_length", "leveled.max_run_length", [
{default, 8},
{datatype, integer},
{default, 6},
{datatype, integer}
]}.
%% @doc Target Percentage for Max Run
%% What is the target score for a maximum run of files, to qualify for
%% compaction. If less than this percentage would be retained after compaction
%% then it is a candidate (e.g. in default case if 25% of space would be
%% recovered)
{mapping, "leveled.maxrunlength_compactionpercentage", "leveled.maxrunlength_compactionpercentage", [
{default, 75.0},
{datatype, float},
hidden
]}.
%% @doc Target Percentage for Single File
%% What is the target score for a run of a single file, to qualify for
%% compaction. If less than this percentage would be retained after compaction
%% then it is a candidate (e.g. in default case if 50% of space would be
%% recovered)
{mapping, "leveled.singlefile_compactionpercentage", "leveled.singlefile_compactionpercentage", [
{default, 50.0},
{datatype, float},
hidden
]}.