[jira] [Created] (OAK-5058) Improve strategy for deciding whether to run GC based on both absolute size and relative percentage

["Andrei Dulceanu (JIRA)" <ji...@apache.org>]

Andrei Dulceanu created OAK-5058:
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             Summary: Improve strategy for deciding whether to run GC based on both absolute size and relative percentage
                 Key: OAK-5058
                 URL: https://issues.apache.org/jira/browse/OAK-5058
             Project: Jackrabbit Oak
          Issue Type: Improvement
          Components: segment-tar
    Affects Versions: 1.5.12
            Reporter: Andrei Dulceanu
            Assignee: Andrei Dulceanu
            Priority: Minor
             Fix For: 1.5.14


A better way of deciding whether GC should run or not might be by looking at the numbers computed in {{SizeDeltaGcEstimation}} from both an absolute size and relative percentage point of view. For example it would make sense to  run compaction only if both criteria are met: "run if there is > 50% increase or more than 10GB".

Since the absolute threshold is already implemented (see {{SegmentGCOptions.SIZE_DELTA_ESTIMATION_DEFAULT}}), it would be nice to add also something like {{SegmentGCOptions.SIZE_PERCENTAGE_ESTIMATION_DEFAULT}} and use it in taking the decision.



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