Scalability question?
Hi there, There have been some internal debates here about how far we can scale Kafka. Ideally, we'd be able to make it scale to 90 billion events a day. I've seen somewhere that linked scaled it up to...
View ArticleError on using camel cxf "No binding factory......
In my camel app i am creating cxf endpoints in java dsl: CxfEndpoint cxf = new CxfEndpoint(rtdmUrl, new CxfComponent(this.getContext())); cxf.setServiceClass(EventPortType.class);...
View ArticleWhat's the point of the OUT message on an Exchange?
I don't understand what the point of using the out message is. It doesn't copy headers. It doesn't signify the end of a route as far as I can tell. It's not used for a reply message. I don't think any...
View ArticleQuestion about kafka-consumer-perf-test.sh
Hi, I’m having trouble understanding the results from running kafka-consumer-perf-test. For low number of messages, I see very low throughput in terms of messages / second. Here is a table of results:...
View ArticleMissing antlr dependency in Maven?
Hi all, We're noticing that we have to add the correct version of org.antlr:antlr-runtime as a runtime dependency in our Pig client code in order to avoid errors like the one linked here:...
View ArticleUnusual Jena rror - possibly a locking issue?
I saw something odd today (see trace below). I have a Fuseki/TDB server that receives some bursts of updates and queries. I know that this error appears to have failed during results iteration, but...
View ArticlePlugin to invoke SQLLDR
Hi All, I am planning to invoke SQLLDR from in the POM.xml. any idea which plugin we can use to invoke the same? Thanks for your help, Hanuman
View ArticleHow to change snapshot artifacts timezone?
I am using Maven version 3.0.4 and Nexus repository where to deploy Maven created snapshot artifacts. How I can change snapshots timestamp timezone from UTC to Europe/Helsinki ? I have tried to set...
View ArticleTDB versus an OntModel
here's a little test method. The second call to smallAssertions sees no triples at all. There's a todo on the doc for ontologies, and I'll cheerfully write some doc if someone will tell me what dumb...
View ArticleSystem.pause behavior
Hi, I am using Sytem.pause() to pause application, but this instruction didn't work immediately. (System.pause working but not immediately) For example if on click event listener function of a button I...
View Articlelist of images: poor performances
Hi, in a mobile app I need to display a list of 200 images. On the list I use a tileLayout with virtualLayout=true and a custom itemRenderer that only contains a Spark Image. On the set value method of...
View ArticlePossible change to the schemagen plugin
As of 0.5, the current version, the schemagen plugin defaults to writing into target/generated-sources. This directory is usually the home of multiple sets of generated source; for example, a typical...
View ArticleAccessing a BytesMessage multiple times wipes the payload
Hi all, I have a Topic in ActiveMQ where I publish BytesMessage using javax.jms.TopicPublisher implementation provided by Qpid JMS Client. Accessing the message from a consumer A (again, a...
View ArticleSchema Coersion
Is it possible to coerce the SpecificDatumReader to read a file from a different Schema? We use Avro code generation for speed and type enforcement in our environment normally but one of the data...
View ArticleBasic JAX-RS Service
Hi All, I'm trying to build a basic jax-rs example using version 2.7.11. Using the server and service code from the example code...
View ArticlePartition reassign Kafka 0.8.1.1
Hi, I was testing out Kafka 0.8.1.1 and found that i get the following exception during partition re-assignment : *./kafka-reassign-partitions.sh --path-to-json-file ritest.json --zookeeper...
View ArticleFlex and Excel pivot tables
Hi All, I'm using apache poi to create and download excel files from my datagrids. One of the limitations is that cannot create pivot tables. http://poi.apache.org/spreadsheet/limitations.html Anybody...
View ArticleHow to mock multiple components without mocking everything with "*" ?
Hi, I'm using the CamelTestSupport in camel version 2.13.1. I'd like to do something like this to mock out two different components: @Override public String isMockEndpoints() { return...
View ArticleSynchronisation and Aggregator
Hi, I want to use a Synchronisation in a route with an Aggregator. So I implemented the onCompletion() method of the Synchronisation to send a response that the message was received correctly. My...
View ArticleZookeeperRoutePolicy with multiple routes and different znodes- one always...
I have two routes that I integrated with ZooKeeperRoutePolicy to establish basic distributed route election. (Using camel 2.13.1) When used with one route instance, election/failover works fine. When I...
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