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https://issues.apache.org/jira/browse/BOOKKEEPER-11?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13055627#comment-13055627
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dhruba borthakur commented on BOOKKEEPER-11:
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Does this patch implement Option 1 or Option 2.... looks like it is Option 2,
but instead of updating the znode periodically, the new reader will request the
last-committed-entry from a set of quorum bookies, is that right?
> Read from open ledger
> ---------------------
>
> Key: BOOKKEEPER-11
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-11
> Project: Bookkeeper
> Issue Type: New Feature
> Reporter: Flavio Junqueira
> Attachments: BOOKKEEPER-11.patch, zk-1001-design-doc.pdf,
> zk-1001-design-doc.pdf
>
>
> The BookKeeper client currently does not allow a client to read from an open
> ledger. That is, if the creator of a ledger is still writing to it (and the
> ledger is not closed), then an attempt to open the same ledger for reading
> will execute the code to recover the ledger, assuming that the ledger has not
> been correctly closed.
> It seems that there are applications that do require the ability to read from
> a ledger while it is being written to, and the main goal of this jira is to
> discuss possible implementations of this feature.
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