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https://issues.apache.org/jira/browse/CLOUDSTACK-7563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14171306#comment-14171306
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ASF subversion and git services commented on CLOUDSTACK-7563:
-------------------------------------------------------------
Commit 4b8bfe26275f7eb6e98abe77849153eaa93e8205 in cloudstack's branch
refs/heads/master from [~minchen07]
[ https://git-wip-us.apache.org/repos/asf?p=cloudstack.git;h=4b8bfe2 ]
CLOUDSTACK-7563: Fix potential NPE from FingBugs.
> ClassCastException in VirtualMachineManagerImpl in handling various Agent
> command answer.
> -----------------------------------------------------------------------------------------
>
> Key: CLOUDSTACK-7563
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-7563
> Project: CloudStack
> Issue Type: Bug
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Components: Management Server
> Affects Versions: 4.3.0
> Reporter: Min Chen
> Assignee: Min Chen
> Priority: Critical
> Fix For: 4.5.0
>
>
> irtualMachineManagerImpl has many methods directly cast the Answer received
> from AgentManager.send or AgentManager.easySend to the expected Answer class
> in the normal case. This will throw unhandled ClassCastException in some
> unexcepted cases where host is down and agent is disconnected, which will
> lead to cloud instability.
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