client side newCq() method invocation on server
Hi I am using gemfire 6.6.2. My server connects to another gemfire server and does the newCq query. Example code: private volatile CqQuery query;QueryService queryService =...
View ArticlePDX support in Databrowser/gfsh?
Hello, We are using reflection based PDX serializer for the application objects. I got this error while trying to query a region containing PDX objects. [ SEVERE 2012/09/25 13:34:28.513 PDT Query...
View ArticleCacheLoader triggerring create operation in gateway listener
I have a region configured with both a gateway listener and a cache loader <gateway-hub id="testHub" port="-1" startup-policy="none"> <gateway id="testHub">...
View ArticleFixed memory regions producing inconsistent eviction results
hi, I have the following code that creates a local region that holds byte arrays: ClientCacheFactory clientCacheFactory = new ClientCacheFactory(cacheProperties);...
View ArticleSupport for multiple caches from a single VM
The inability to have multiple caches open from a single VM inside a Spring/tcServer app is proving to be an obstacle to GemFire implementation for us. We have a number of disparate data sources...
View ArticleHelp on continuous query
Hi,We are evaluating gemfire for a real time event processing scenario. Right now its using strom + esper. We investigated gemFire CQ. Could you please help with following queries on that :1. Does CQ...
View ArticleBypassing local client cache
I have a client/server topology with multiple clients. The clients are restful web services, behind round-robin load balancing. There is one particular region that is very frequently accessed by "the...
View ArticleGC pauses and peers timeout
Hi, What are the settings that we can change to take into the account GC pauses? For example, GC takes 45 seconds, but peers disconnect after 35 seconds. We have the following settings set...
View ArticleExample to calculate average on gemFire
Yogesh Mahajan, I was browsing through your page http://community.gemstone.com/display/gemfire60/Data+aware+behavior+routing. There is a link to example explaining how to calculate average sales. That...
View ArticleGemfire server start/stop giving nullpointer exception
Hi, We are using gemfire 6.5.1.28 version. While stopping & starting Gemfire server we are getting below exception. This setup was working previously.Starting...
View ArticleQuery Vs. Function Execution
I am wondering what the difference is between running a query on a partitioned region to get a set of cached objects vs. using a distributed function to aggregrate results and return them to the...
View ArticlePartitionAttributes Colocation queries
Hi,I have created two regions:PartitionResolver resolver = new TradesPartitionResolver();PartitionAttributes attrs = new PartitionAttributesFactory().setPartitionResolver(resolver).create();Region...
View ArticleGemFire Memory Sizing Guidelines
OverviewAt a high level, capacity planning for GemFire involves estimating capacity and resources to fulfill it, and verifying and adjusting the estimated values through testing. The first and main...
View ArticleHelp required to resolve "Existing cache's default pool was not compatible."
Hi, I have following cache.xml, and started cacheserver, and confirmed that cache server is running. But when I execute below groovy script to connect to server cache, I get below exception....
View ArticleUpdating another region from the cache listener
Hi, It may sound stupid at the first but we are trying to update a "Utility region" from a main region cache listeners.Utility region is updated from another thread. i.e. main regions cache listeners...
View Articleclient socket error
Do you know what might have cause this error on the client application? [info 2012/10/28 13:22:05.289300 Pacific Daylight Time SJC-PRD-PRN05:4984 5424] IO error[10049] in handshake with...
View ArticleGemfire supports RFID application in M2M environment
Hi Everyone: I have seen old Gemfire Real-Time Event Technical White Paper slides to refer some CEP and RFID business application introduction. Has someone(Gemfire Expert or Guru) these hand-on...
View ArticleCache loader - Partitioned Region
Hi All,Anybody used cache loader to pre-load data into partitioned regions?It looks like we cannot use it.Please share your thoughts and experiences. Thanks in advance
View ArticleUnderstanding client registrat and unregister log
1) I am trying to understand why we get the following client unregistration immediately following a registration. [info 2012/10/30 18:14:25.767 PDT <ServerConnection on port 10011 Thread 8033>...
View ArticleGemfire Query Performance
Hi guys, Currently I build Client-Server model with gemfire 6.5 and the cache is Partition with redundant default 0. And the authentication is configured. There're two cache servers and one locator....
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