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https://issues.apache.org/jira/browse/ZOOKEEPER-816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12889904#action_12889904
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Patrick Hunt commented on ZOOKEEPER-816:
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http://www.eclipse.org/aspectj/
http://en.wikipedia.org/wiki/AspectJ
I use this for network fault injection testing - instrumenting network
operations with random failures. Works extremely well and I don't need to
modify the original source at all.
> Detecting and diagnosing elusive bugs and faults in Zookeeper
> -------------------------------------------------------------
>
> Key: ZOOKEEPER-816
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-816
> Project: Zookeeper
> Issue Type: New Feature
> Reporter: Miguel Correia
> Priority: Minor
>
> Complex distributed systems like Zookeeper tend to fail in strange ways that
> are hard to diagnose. The objective is to build a tool that helps understand
> when and where these problems occurred based on Zookeeper's traces (i.e.,
> logs in TRACE level). Minor changes to the server code will be needed.
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