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https://issues.apache.org/jira/browse/BOOKKEEPER-181?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13266159#comment-13266159
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Roger Bush commented on BOOKKEEPER-181:
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I added scan and appropriate test code and Mock implementation.
I also made the changes ivank recommended concerning cleaning things up a bit
(renamed Versioned => VersionedValue, made some things inner interfaces/enums).
What still remains:
1. Add license header (I'll do today).
2. String versus byte [] - wondering how ugly this will make the code,
so I was holding off.
3. Convert to async versions, and have a sync adapter so MainTest can
be written in synchronous fashion. Adapter can just be a test utility.
4. Metadata Qualifying Tests – should be possible to write a simple
metadata acceptance test for functional correctness. Would handle corner cases
and check invariants using the abstract interfaces. Could be done later.
Seems like 1-3 have to be done before it's ready to use.
I'm guessing integration into the existing codebase is simply a matter of
putting com.yahoo.bookkeeper.metadata.plugin into it's own top-level-directory
(?)
https://github.com/rogerbush8/BookKeeperMetadataPlugin
> 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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