A Bug about the JVM Attach mechanism

[nijiaben]

Yes Alan, I mean this
 
 
------------------ Original ------------------
From:  "Alan Bateman"<Alan.Bateman at oracle.com>;
Date:  Thu, Jun 20, 2019 02:54 PM
To:  "nijiaben"<nijiaben at perfma.com>; "David Holmes"<david.holmes at oracle.com>; "serviceability-dev"<serviceability-dev at openjdk.java.net>; "jdk8u-dev"<jdk8u-dev at openjdk.java.net>; "hotspot-runtime-dev"<hotspot-runtime-dev at openjdk.java.net>; 

Subject:  Re: A Bug about the JVM Attach mechanism

 

On 20/06/2019 05:10, nijiaben wrote:
> :
> I know this mechanism, can we provide means of recovery to avoid unavailability caused by accidental deletion?
>
Are you concerned about tmpreaper or cron jobs that periodically cleanup 
/tmp? There may indeed be an issue for applications that run for weeks 
or months. If someone is using jmap, jcmd or other tools using the 
attach API then it will trigger the attach listener to start. When they 
come back in a few weeks then the .java_pid<pid> file may have been 
removed so they cannot attach. Is this what what you are pointing out?

-Alan