[jira] Updated: (ZOOKEEPER-62) Generally improve logging to enable debuggability in the field.

["Stu Hood (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ZOOKEEPER-62?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stu Hood updated ZOOKEEPER-62:
------------------------------

    Attachment: zoo-log.tgz

Here is an example of the problem from r701369. In this 3 peer ZooKeeper setup, one peer grabbed leadership to start, and then lost it, going into an infinite loop, while the other peers went about their business.

But by far the most common log messages that are repeated are the ones referring to opening and closing transaction logs, and very little information is given about why the election process keeps restarting.

> Generally improve logging to enable debuggability in the field.
> ---------------------------------------------------------------
>
>                 Key: ZOOKEEPER-62
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-62
>             Project: Zookeeper
>          Issue Type: Improvement
>          Components: c client, java client, server
>            Reporter: Patrick Hunt
>            Assignee: Flavio Paiva Junqueira
>         Attachments: zoo-log.tgz
>
>
> We need to improve our logging to enable debugging of field issues.
> Flavio, assigning to you as you are currently looking at some client/server issues that could benefit from better logging. Please attach patches if you see potential areas for improvement.

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