Re: [jira] Commented: (ZOOKEEPER-790) Last processed zxid set prematurely while establishing leadership

[Flavio Junqueira]

I forgot if you have provided already a description of how you reproduce it. If you could point me out to that, I would appreciate. -Flavio On Jul 13, 2010, at 11:33 PM, Vishal K wrote: Hi Flavio , I got the same error messages. I can reproduce this quite easily. I will capture the logs again. Is there anything else you would like me to provide? Thanks. -Vishal On Tue, Jul 13, 2010 at 3:52 PM, Flavio Paiva Junqueira (JIRA) < j...@apache.org> wrote:   [ https://issues.apache.org/jira/browse/ZOOKEEPER-790?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12887969#action_12887969] Flavio Paiva Junqueira commented on ZOOKEEPER-790: -------------------------------------------------- Vishal, What exactly didn't work? Do you get the same error messages with the patch? Do you have a reliable way of reproducing it? In general, it would be useful if you could provide more detail. Thanks! Last processed zxid set prematurely while establishing leadership -----------------------------------------------------------------                Key: ZOOKEEPER-790                URL: https://issues.apache.org/jira/browse/ZOOKEEPER-790            Project: Zookeeper         Issue Type: Bug         Components: quorum   Affects Versions: 3.3.1           Reporter: Flavio Paiva Junqueira           Assignee: Flavio Paiva Junqueira           Priority: Blocker            Fix For: 3.3.2, 3.4.0        Attachments: ZOOKEEPER-790.patch The leader code is setting the last processed zxid to the first of the new epoch even before connecting to a quorum of followers. Because the leader code sets this value before connecting to a quorum of followers (Leader.java:281) and the follower code throws an IOException (Follower.java:73) if the leader epoch is smaller, we have that when the false leader drops leadership and becomes a follower, it finds a smaller epoch and kills itself. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. flavio junqueira   research scientist   f...@yahoo-inc.com direct +34 93-183-8828   avinguda diagonal 177, 8th floor, barcelona, 08018, es phone (408) 349 3300    fax (408) 349 3301