Vikas Saurabh commented on OAK-6544:

Discussed this offline with [~amitjain]. The issue pointed out by Amit above 
can't be cleanly resolved all the way through. What we decided was 
active-purge-of-blobs would force sync blob tracker info. BlobTracker's 
scheduled sync, otoh, would become smarted and won't sync if there already was 
a recent sync.

I'm holding back on this issue for now - btw, the above discussion kind of 
implies that a sane default should be O(12hours) (same order as that of blob 

> Enable active blob deletion feature by default
> ----------------------------------------------
>                 Key: OAK-6544
>                 URL: https://issues.apache.org/jira/browse/OAK-6544
>             Project: Jackrabbit Oak
>          Issue Type: Task
>          Components: lucene
>    Affects Versions: 1.7.1
>            Reporter: Vikas Saurabh
>            Assignee: Vikas Saurabh
>             Fix For: 1.8
> OAK-2808 allows for active deletion of blobs created by lucene indexing. 
> Currently, the feature is disabled by default. This task is to track enabling 
> it by default before doing stable release of the feature.
> About the default enabled value: I think default interval to purge blobs can 
> be 6 hours be default. (Note, the purge logic, anyway won't purge blobs which 
> were deleted in recent past... 'recent'=24hours \[configurable via jvm 
> param]).
> /cc [~chetanm]

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