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https://issues.apache.org/jira/browse/IGNITE-6922?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16260417#comment-16260417
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Alexey Goncharuk commented on IGNITE-6922:
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[~v.pyatkov],
Please remove System.err.println("") calls from the code, use
`@IgniteInstanceResource` with Ignite injection to obtain an instance of log
instead.
> Class can not undeploy from grid in some specific cases
> -------------------------------------------------------
>
> Key: IGNITE-6922
> URL: https://issues.apache.org/jira/browse/IGNITE-6922
> Project: Ignite
> Issue Type: Bug
> Reporter: Vladislav Pyatkov
> Assignee: Vladislav Pyatkov
>
> Peer class loading enable on cluster and deployment mode set as SHARED.
> In several cases after master (so that who deploy a class) node leave cluster
> and reconnect with other implementation, old implementation of the class
> continue execute in grid.
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