[
https://issues.apache.org/jira/browse/ZOOKEEPER-596?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Mahadev konar updated ZOOKEEPER-596:
------------------------------------
Attachment: ZOOKEEPER-596.patch
a preliminary patch. Does not include tests. Will still be adding tests and
cleaning it up.
this patch adds:
- a new class ZKDatabase that becomes a top level member of quorumpeer and
passed around to all the zookeeper server's created for the life of a quorumPeer
- the zkdatabase includes all the api's needed to modify/use/load the zk
database
making ZKDatabase as the top level member of quorumpeer allows it to be shared
across different instances of zookeeper servers (leader/learner/observer) of an
instance of quorumpeer.
I will be adding javadocs and cleaning up the patch shortly.
> The last logged zxid calculated by zookeeper servers could cause problems in
> leader election if data gets corrupted.
> --------------------------------------------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-596
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-596
> Project: Zookeeper
> Issue Type: Bug
> Affects Versions: 3.2.1
> Reporter: Mahadev konar
> Assignee: Mahadev konar
> Fix For: 3.3.0
>
> Attachments: ZOOKEEPER-596.patch
>
>
> It is possible that the last loggged zxid as reported by all the servers
> during leader election is not the last zxid that the server can upload data
> to. It is very much possible that some transaction or snapshot gets corrupted
> and the servers actually do not have valid data till last logged zxid. We
> need to make sure that what the servers report as there last logged zxid,
> they are able to load data till that zxid.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
