Stack Overflow
Stack Overflow

Questions tagged [apache-apex]

Apex is a YARN-native platform that unifies stream and batch processing. It processes big data in-motion in a way that is highly scalable, highly performant, fault tolerant, stateful, secure, distributed, and easily operable.

Apache Apex is an open source platform for a unified stream and batch processing. It runs natively on YARN. Apache Apex itself is divided into two core modules

Developing application on Apex

To start with, documentation is available at: http://apex.apache.org/docs.html

51 questions
0
votes
1 answer

Apache Apex CLI launch error - protobuf

I'm trying to launch an apa file from the Apache Apex CLI (version 3.4) on a Hadoop cluster running 2.7.4-SNAPSHOT and Protobuf v2.6.1 and I get the following error: java.lang.NoSuchMethodError: …
dbss
  • 11
  • 2
0
votes
1 answer

DataTorrent: JDBC operator not working

I am replacing the console operator in WordCountDemo but it is giving me a operatorError in STRAM Events. When I click on it it shows me nullpointer error. I am very new to datatorrent. Here is the complete error message: Abandoning deployment due…
user2602774
  • 1
  • 1
0
votes
2 answers

Will Kafka operator semantic change when I rename an Apache Apex application?

Am I correct in assuming that the moment we rename an application, the semantics of the Kafka operator will completely change and might end up reading from the "initialOffset" by the application code ? How is the semantics maintained for a…
brusli
  • 79
  • 9
0
votes
1 answer

Apache Apex minimum development environment

I am wondering what the minimum environment I need to develop and test my Apex apps? Running in Eclipse on Windows, I generated Apex project using the Apex archtype and tried to run the default JUnit test that gets created but get the following…
brusli
  • 79
  • 9
-1
votes
1 answer

package org.apache.apex.malhar.lib does not exist

I am trying to execute an apex application consisting of an operator which uses the malhar library for generating random strings. Even though I have included the malhar-library dependency in my pom.xml file I am getting the following error on the…
Pranoti Bulakh
  • 1
  • 3
-2
votes
1 answer

Apache-Apex : How to write data from kafka topic to hdfs filesystem?

I am trying to read dat from kafka topic and writing it to HDFS filesystem, I buid my project using the apex malhar from [ https://github.com/apache/apex-malhar/tree/master/examples/kafka]. Unfortunally, after setting up the kafka properties and…
AMLOCO
  • 41
  • 6
1 2 3
4