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https://issues.apache.org/jira/browse/BOOKKEEPER-181?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13266155#comment-13266155
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Roger Bush commented on BOOKKEEPER-181:
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@matteo, @sijie, @flavio - concerning garbage collection: There is always the
possibility that a newly created ledger does not get recorded by the client,
and is thus left dangling. There is no ability to solve this using the API, so
from a manageability standpoint, there must be a way of finding these empty,
orphaned ledgers. We wouldn't expect many of these, but we'd need to
periodically clean them up. I'm not sure of the implementation details (or
perhaps you already do this in BK).
> Scale hedwig
> ------------
>
> Key: BOOKKEEPER-181
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-181
> Project: Bookkeeper
> Issue Type: Improvement
> Components: bookkeeper-server, hedwig-server
> Reporter: Sijie Guo
> Assignee: Sijie Guo
> Fix For: 4.2.0
>
> Attachments: hedwigscale.pdf, hedwigscale.pdf
>
>
> Current implementation of Hedwig and BookKeeper is designed to scale to
> hundreds of thousands of topics, but now we are looking at scaling them to
> tens to hundreds of millions of topics, using a scalable key/value store such
> as HBase.
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