Comments for ~pperalta

Comment on Partitions, Backing Maps, and Services…Oh My! by Phani Kumar Pilli

Phani Kumar Pilli — Sat, 20 Jul 2013 01:54:41 +0000

simple, clear and very straight to the point. Thanks for your post. Keep post these kind of concepts.

Comment on Coherence Key HOWTO by Patrick Peralta

Patrick Peralta — Wed, 27 Mar 2013 18:32:49 +0000

The console is converting your numbers to int. Try including an extra space in front of your number to make it a String; i.e. get 5 instead of get 5.

Comment on Coherence Key HOWTO by Anu

Anu — Wed, 27 Mar 2013 02:34:32 +0000

I tested with some sample strings what I found was

When the key is of type string and it contains alphabets or alphanumeric characters, the values are getting retrieved correctly.

But if the key is of type String and the value is only numbers the values are not getting retrieved.

What is the reason for this?

Comment on Coherence Key HOWTO by Anu

Anu — Wed, 27 Mar 2013 01:29:15 +0000

Map (ele): list
2222222 =
200:20:2:2:1:1:Thu Feb 02 00:00:00 2012:2:Thu Feb 02 00:00:00 2012:Thu Feb 02 00:00:00 2012

GC2 =
200:20:2:2:1:1:Thu Feb 02 00:00:00 2012:2:Thu Feb 02 00:00:00 2012:Thu Feb 02 00:00:00 2012

Map (ele): get GC2
200:20:2:2:1:1:Thu Feb 02 00:00:00 2012:2:Thu Feb 02 00:00:00 2012:Thu Feb 02 00:00:00 2012

Map (ele): get 2222222
null

I have included the key in the equals() and hashcode() method. please tell me what is going wrong

Comment on How to make your Coherence objects forward and backward compatible with POF by Patrick Peralta

Patrick Peralta — Sun, 16 Dec 2012 17:40:25 +0000

Hi Nagesh,

You have to configure a cache service with the POF serializer and the other cache service with the default “java” serializer. Take a look at http://docs.oracle.com/cd/E24290_01/coh.371/e22837/api_pof.htm (19.2.6.1 Configure the ConfigurablePofContext Class Per Service) and http://docs.oracle.com/cd/E24290_01/coh.371/e22837/appendix_operational.htm#BAGEFCHC.

Comment on Coherence 3.5: POF Extractor/Updater by Patrick Peralta

Patrick Peralta — Sun, 16 Dec 2012 17:34:42 +0000

Hi Ravi – setting the ‘system-property’ attribute in the config file simply indicates which system property contains the POF configuration file. The exception indicates that POF is not configured correctly. There are a few different ways to configure POF (for instance, you can do it for an entire cluster member or for individual services). I would suggest including system properties -Dtangosol.pof.enabled=true and -Dtangosol.pof.config=[your pof config.xml] to start with. See this link for more information: http://docs.oracle.com/cd/E24290_01/coh.371/e22837/gs_config.htm#CEGHHIGD

Comment on Coherence 3.5: POF Extractor/Updater by Ravi

Ravi — Fri, 14 Dec 2012 12:00:18 +0000

Hi Patrick, I have tried same approach using LikeFilter with PofExtractor and setting ‘system-property’ attribute in config file. But I am getting below exception when trying to read from cache. I am using coherence 3.7.1.0 version.

2012-12-14 16:05:06.628/45.326 Oracle Coherence GE 3.7.1.0 (thread=http-bio-8080-exec-3, member=3): Filter is not serializable: LikeFilter(PofExtractor(target=VALUE, navigator=SimplePofPath(indices=1)), 100000)
(Wrapped) java.io.NotSerializableException: com.tangosol.io.pof.reflect.SimplePofPath
at com.tangosol.util.Base.ensureRuntimeException(Base.java:288)

Comment on How to make your Coherence objects forward and backward compatible with POF by Nagesh

Nagesh — Thu, 13 Dec 2012 20:26:27 +0000

Thank you for the prompt response on my questions. Do you happen to have the configuration which work for both serialization? I have tried to implement it some how it throws the “Unknown User type” when i tried to put the data in to the cache which i have not configured the POF.

Comment on How to make your Coherence objects forward and backward compatible with POF by Patrick Peralta

Patrick Peralta — Wed, 12 Dec 2012 21:53:15 +0000

Hi Nagesh,

It is possible to configure different cache services with different serializers. This way you could run some of your caches with the default serializer and others with POF.

Also, I believe that POF now has support for annotations so you don’t have to implement readExternal/writeExternal yourself; you should be able to simply annotate the fields that need to be serialized. I’m not sure if/how this works with evolvable.

Comment on How to make your Coherence objects forward and backward compatible with POF by Nagesh

Nagesh — Wed, 12 Dec 2012 15:00:34 +0000

Thank you for providing the information. How do we want to gradually migrate the code to POF serialization? If one presently using the externalizableLite to serialize and deserialize the objects to and from coherence. To create the serialization routines for these objects is a big task, so, can we have gradual roll out of this functionality? This means we need to support the POF and externalizableLite in the same coherence cluster. Would it be possible?

Again than you for giving the tips and suggesstions…