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https://issues.apache.org/jira/browse/BOOKKEEPER-249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13506651#comment-13506651
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Flavio Junqueira commented on BOOKKEEPER-249:
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GLB is the largest deleted ledger id in a prefix of deleted ledgers with no
holes. Given a list of ledgers to delete, the GLB can be calculated from the
list itself, after deleting all ledgers in the prefix. Of course, it assumes
that the identifiers of ledgers a bookie stores increase monotonically. As you
observed and I confirmed, if this assumption doesn't hold, then the scheme
doesn't work.
> Revisit garbage collection algorithm in Bookie server
> -----------------------------------------------------
>
> Key: BOOKKEEPER-249
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-249
> Project: Bookkeeper
> Issue Type: Improvement
> Components: bookkeeper-server
> Reporter: Sijie Guo
> Fix For: 4.2.0
>
> Attachments: gc_revisit.pdf
>
>
> Per discussion in BOOKKEEPER-181, it would be better to revisit garbage
> collection algorithm in bookie server. so create a subtask to focus on it.
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