Mahadev konar updated ZOOKEEPER-380:

    Attachment: ZOOKEEPER-380.patch

I am attaching a patch which changes the current bookkeeper api to move all the 
reading and writing to ledgerhandle rather than using BooKKeeper api. The 
BooKKeeper api acts like a bookkeeper handle which can be used to create/open 
ledgers. THe reading and writing can then be done using ledgerhandle api.

I havent yet finished my streaming api. I wnated to make some changes to the 
bookkeeper api so that it easier to use and can be extended to write a 
streaming interface on the ledgerhandle.


> bookkeeper should have a streaming api so that its easier to store 
> checpoints/snapshots in bookkeeper.
> ------------------------------------------------------------------------------------------------------
>                 Key: ZOOKEEPER-380
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-380
>             Project: Zookeeper
>          Issue Type: Improvement
>          Components: contrib-bookkeeper
>            Reporter: Mahadev konar
>         Attachments: ZOOKEEPER-380.patch
> currently, bookkeeper api allows just a bytes interface which is 
> ld.write(bytes).
> We should have an interface like 
> Stream s = ledger.createStream() (I am not very sure of the interface right 
> now but will post a more concrete one after giving it a little more thought)
> now this stream can be used to wirte checkpoints as 
> s.write(bytes)
> and then closed to s.close() to close the snapshot. 
> This api could use the current api to implement snapshots as chunks of bytes 
> (buffered by stream s) that can be written via ld.write(bytes).

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