Thoughts
Hi everyone, I'm developing a quite complex system using Pig and I'd like to confirm some ideas if possible. They are not really questions. They are more like thoughts. 1) I'm creating my "input" data...
View ArticleNumber of requests per time period
Hi, Is there an easy way for me to get number of requests per time period, so I am able to retrospectivly graph time/throughput? Thanks Paul
View Article"Hit max consecutive under-replication rotations" Error
Hi all, While trying to input data from flume to HDFS sink, I'm getting this error [ERROR - org.apache.flume.sink.hdfs.BucketWriter.append(BucketWriter.java:566)] Hit max consecutive under-replication...
View ArticleQuery regarding readMultiLine in Morphlines config
Hi, I have a log file with multiple records. (1 line= 1 record). I want to send N lines (say 20) at a time to morphlines, and then send it to Solr as a single Solr document. (This is an experiment to...
View ArticleAny way to get streaming semantics in algebraic?
Hey All, I’m struggling with performance of algebraic aggregates. It seems that Pig will always bag up tuples between the input and intermediate aggregate stages. For my workload those bags get large...
View ArticleBasic cluster question
I have been happily testing clusters of activemq 5.10 nodes; we desire highly available distributed topics. I just wanted to sanity check my understanding of the persistent storage with a cluster. My...
View ArticleHow to optimize performance of multiple producers and consumers
Greetings, We are on version 5.10 - recently migrated, but don't think my problem is version specific. In short, it boils down to can I evaluate the selector information on producer side? I need to...
View ArticleDurably storing messages in Kafka
I think I know the answer to this already but I wanted to check my assumptions before proceeding. We are using Kafka as a queueing mechanism for receiving messages from stateless producers. We are...
View ArticleRename/ categorize a custom mbean
I annotated (@ManagedResource, @ManagedAttribute...) the consumer and producer of my custom component. While i see the consumer under "consumers" in jconsole i can't find the producer...
View ArticleARQ API and Jena Spatial Queries
Hello, I'm trying to implement this using ARQ API: SELECT ?placeName{ ?place spatial:nearby (51.46 2.6 10 'km') . ?place rdfs:label ?placeName} I'm able to create the function as follows: ExprList args...
View ArticleTool Schemagen don't print the Properties and the individuals
Hello everyone, I want to create the Java class that corresponds to my ontology .owl, for this i'm going use the tool schemagen.bat with Windows, but in the java class there are only the Resource while...
View Articlewhere to add include file so that it can be seen by other files in app?
Hi, I want to use include directive to add files into my application. Where should I put them in order to be seen in the entire app? I've tried in a class like this: package org { public class Test {...
View ArticleNullPointer in ...sts.event.map.EventMapper
I recently enabled audit logging in my STS (based on 2.7.12-SNAPSHOT), by configuring eventListener in my TokenIssueOperation with an org.apache.cxf.sts.event.map.EventMapper object. This works great...
View ArticleProblem about failing maven intall
Hello. I was faced with some problem when I was executing maven install goal. I added one dependency in pom.xml and then executed mvn install command. Some error came up during build. Using connector...
View Articleinmethod grid - Ajaxically update child grid from Master grid
Hello, I am using inMethod data grid with Wicket 1.5. I have a page to show master grid (MasterPanel). MasterPanel has child grid (ChildPanel) to display child records. ChildPanel accepts MasterBean as...
View ArticleHas anybody successfully integrated Kafka jar for Android app.
Hello, I am trying to make my Android application to be the producer of messages that get sent to Kafka server. I am trying to compile my android code using following libraries -...
View Articleresult of jsonloader of pig script with bag is empty
Hi, I'm using cdh5 quickstart vm and I have a file like this(not full here): {"user_id": "kim95", "type": "Book", "title": "Modern Database Systems: The Object Model, Interoperability, and Beyond.",...
View ArticleA question on using definition for multiple clients
Hello, I have used Spring based configuration to define a jaxws client. The spring bean looks something on following lines: <jaxws:client id="id" serviceClass="SomeClass" address=someAddress>...
View ArticleInterested in contributing to Kafka?
Hey All, A number of people have been submitting really nice patches recently. If you are interested in contributing and are looking for something to work on, or if you are contributing and are...
View ArticleVerifying a multicast cluster
I'm trying to verify that my multicast cluster is working properly: clients on any node should receive msgs sent to any other node. Using 5.10, on Ubuntu In the past I have successfully created a...
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