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https://issues.apache.org/jira/browse/BOOKKEEPER-181?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13240287#comment-13240287
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Flavio Junqueira commented on BOOKKEEPER-181:
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bq. hmm, hbase did provide versions for rows. but I not sure that HBase provide
such functionality to check current version and swap. I think it just provide
set a value associate with a version, not a CAS by version.
You're right, checkAndPut does not allow us to use the internal version to
perform the check. I actually found a jira discussing it: HBASE-4527. The
recommended way described there is to have our own version column.
> 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
> Attachments: 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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