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From "Julian Reschke (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (OAK-8448) VersionGC may get stuck at 60s scope
Date Mon, 29 Jul 2019 14:08:00 GMT

     [ https://issues.apache.org/jira/browse/OAK-8448?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Julian Reschke updated OAK-8448:
--------------------------------
    Labels: candidate_oak_1_8  (was: candidate_oak_1_10)

> VersionGC may get stuck at 60s scope 
> -------------------------------------
>
>                 Key: OAK-8448
>                 URL: https://issues.apache.org/jira/browse/OAK-8448
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: documentmk
>    Affects Versions: 1.8.9
>            Reporter: Julian Reschke
>            Assignee: Julian Reschke
>            Priority: Major
>              Labels: candidate_oak_1_8
>             Fix For: 1.16.0, 1.10.4
>
>         Attachments: OAK-8448.diff, test.diff
>
>
> It seems that if the VersionGarbageCollector reduces the scope to a 60s interval, it'll
never change it back to a bigger interval. This is because the collectLimit gets set to 0:
> {noformat}
>             if (scope.getDurationMs() <= options.precisionMs) {
>                 // If we have narrowed the collect time interval down as much as we can,
no
>                 // longer enforce a limit. We need to get through this.
>                 collectLimit = 0;
>                 log.debug("time interval <= precision ({} ms), disabling collection
limits", options.precisionMs);
>             }
> {noformat}
> ...and later on this is interpreted as "there were no restrictions in the prior run that
need to be updated":
> {noformat}
>                 if (maxCollect <= 0) {
>                     log.debug("successful run without effective limit, keeping recommendations");
>                 }
> {noformat}



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