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https://issues.apache.org/jira/browse/PHOENIX-4225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16182836#comment-16182836
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James Taylor commented on PHOENIX-4225:
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+1. Thanks, [~sergey.soldatov].
> Using Google cache may lead to lock up on RS side.
> ---------------------------------------------------
>
> Key: PHOENIX-4225
> URL: https://issues.apache.org/jira/browse/PHOENIX-4225
> Project: Phoenix
> Issue Type: Bug
> Reporter: Sergey Soldatov
> Assignee: Sergey Soldatov
> Fix For: 4.12.0
>
> Attachments: PHOENIX-4225-1.patch
>
>
> On the server side we are using google cache with life time bounds. This is
> integrated with GlobalMemoryManager which is used for almost all tasks that
> requires memory allocation. The problem is that when the cache member get
> removed, it doesn't send remove notification until next write/get operation
> happen. But in some cases once the large cache was removed (but memory
> manager doesn't know that since it relies on the notification), we try to
> resend it and memory manager get stuck waiting for free space, blocking all
> other operations with the memory manager.
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