Guus der Kinderen commented on DIRMINA-1078:

I'm sorry, I don't understand the request. Change the name to what?

> OrderedThreadPoolExecutor should allow sessions to be prioritized
> -----------------------------------------------------------------
>                 Key: DIRMINA-1078
>                 URL: https://issues.apache.org/jira/browse/DIRMINA-1078
>             Project: MINA
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Guus der Kinderen
>            Priority: Minor
>         Attachments: 20180216.patch
> The functionality provided in {{OrderedThreadPoolExecutor}} should be 
> augmented to, optionally, allow for assignment of priority to certain 
> sessions over others.
> We've introduced this functionality after observing issues in a deployment 
> where system resources where being starved by the sheer amount of sessions 
> that attempted to perform TLS. Without the class introduced by this commit, 
> events for any session could eventually fail (time-out), causing the session 
> to fail. If that session happened to be a session that had already 
> established TLS, the resources that were spent on establishing TLS are 
> wasted. The negative effect is amplified by the fact that a typical client in 
> such a situation would attempt
>  to reconnect, which further adds to the load of the system already being 
> starved.
> With the modifications introduced by the patch provided in this issue, 
> priority can be given to sessions that have already established TLS. This 
> dramatically reduces the issue described above, as the first sessions to fail 
> will be those that are still negotiating TLS. Using a specialized 
> {{Comparator}}, one can even prioritize between these, causing sessions for 
> which least effort has performed to fail before sessions that are more likely 
> to near TLS completion.
> The patch intends to add this feature as optional functionality to the 
> existing implementation, with little side effects to the existing, default 
> behavior.
> The implementation provided here was initially based on a copy of the 
> implementation of {{OrderedThreadPoolExecutor}} that introduced a 
> considerable amount of code duplication. For illustrative purposes, the line 
> of commits leading from that initial commit to the patch attached to this 
> JIRA issue can be found at 
> [https://github.com/guusdk/mina/commit/c0a421cf445696fbfd4d5b10d650d7c71d8faab7]
>  and later commits.

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