Terracotta Discussion Forums (LEGACY READ-ONLY ARCHIVE)

Hi,

In our application we want a ConcurrentHashMap to be shared across cluster. When we shared this object in tc-config.xml , then it has given the error :

**********************************************************
Attempt to share an instance of a non-portable class referenced by a portable class. This
unshareable class is a JVM- or host machine-specific resource. Please ensure that instances
of this class don't enter the shared object graph.

Referring class : com.geodesiconline.xmpp.Resource
Referring field : com.geodesiconline.xmpp.Resource.directedUsers
Thread : pool-2-thread-9
JVM ID : VM(3)
Unshareable class: java.util.concurrent.ConcurrentHashMap
***********************************************************

To overcome this we added this class to <additional-boot-jar-classes> for pre-instrumentation.
But it leads with giving the warning

********************* WARNING ******************************
* The following set of classes are non-adaptable types and have not been
* included in the boot jar. Please remove them in the
* <additional-boot-jar-classes> section of the terracotta config:
* [java.util.concurrent.ConcurrentHashMap]
****************************************************************************

Does the warning mean that we cannot use ConcurrentHashMap with Terracotta ?

Kindly, revert back regarding this.

Regards,
Sachin.

Hi, Sachin.

Thanks for writing.

Yes, you are correct. As per page 25 of the TerracottaSessionsQuickStart.pdf;

"The java.util.concurrent package is not supported in this release of Terracotta. However, support for this package will be available in a future release of Terracotta."

Check back online for new releases. I will also see about getting you automatically notified when a new release is available that specifically addresses that package.

Sincerely,

thanks for the reply, and i'll appreciate if you'll keep me updated

Sachin,

Our newest release of the Terracotta product suite , version 2.1, is online and available at:
https://www.terracottatech.com/downloads.jsp

These kits add support for additional classes including java.util.concurrent.ConcurrentHashMap.

Thanks for your patience.