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https://issues.apache.org/jira/browse/ZOOKEEPER-30?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12653996#action_12653996
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Andrew Carman commented on ZOOKEEPER-30:
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Harvey Mudd Clinic Team writes:
1) How do you suggest we deal with zxids? They are integral to Zab and ZK, but
they are currently assigned by ZooKeeperServer. We think they should be moved
into quorum. Is this what you are suggesting by indicating "propose(byte
message[])" return a zxid (Zab transaction identifier)?
2) Should Zab handle writing the log to a file or is that ZK's responsibility
when "deliver" is called?
3) How does propose work more specifically? What is the state of the proposal
when propose returns? Does it return as soon as the Zab leader has seen it (and
assigned a zxid) or does it wait for the proposal to be accepted (so a deliver
never needs to be called).
4) How does the state transfer work? Are we transferring the entire log up to
that point? Some snapshot?
5) We're also unclear on how the leader (both of ZK and Zab) is going to work.
I think this may be up in the air (based on the Jira bug) still - in our minds
the option that makes the most sense is to get rid of the ZK leader, and just
have a Zab leader. Any further thoughts on this?
> Hooks for atomic broadcast protocol
> -----------------------------------
>
> Key: ZOOKEEPER-30
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-30
> Project: Zookeeper
> Issue Type: New Feature
> Reporter: Patrick Hunt
> Assignee: Mahadev konar
>
> Moved from SourceForge to Apache.
> http://sourceforge.net/tracker/index.php?func=detail&aid=1938788&group_id=209147&atid=1008547
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