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From Michael Dürig (JIRA) <j...@apache.org>
Subject [jira] [Resolved] (OAK-4873) Avoid running GC too frequently
Date Tue, 18 Oct 2016 08:37:59 GMT

     [ https://issues.apache.org/jira/browse/OAK-4873?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Michael Dürig resolved OAK-4873.
       Resolution: Won't Fix
    Fix Version/s:     (was: Segment Tar 0.0.16)

I agree with [~alex.parvulescu]: the estimator does and should provide this functionality.
After all, any SNFE caused by a bad configuration and running gc too often is transient. 

> Avoid running GC too frequently
> -------------------------------
>                 Key: OAK-4873
>                 URL: https://issues.apache.org/jira/browse/OAK-4873
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: segment-tar
>    Affects Versions: Segment Tar 0.0.16
>            Reporter: Michael Dürig
>            Assignee: Michael Dürig
>              Labels: compaction, gc
> As {{RevisionGCMBean.startRevisionGC()}} can be used to manually invoke a gc cycle, there
is the danger of running into a {{SNFE}} when gc is run multiple times in quick succession
(due to the retention time being based on number of generations). We should come up with a
mechanism to prevent this scenario. 

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