When trying to submit my topology through StormSubmitter, I am getting -
Caused by: java.lang.NoSuchFieldError: INSTANCE
at org.apache.http.impl.io.DefaultHttpRequestWriterFactory.<init>(DefaultHttpRequestWriterFactory.java:52)
I am using Spring.
I am not initializing HttpClient in Spout/Bolt Constructor. Instead its initialized in constructor of a class that is being fetched from Spring Context in prepare()
method of bolt
Code is structured as follows -
SomeBolt.java
@Component
public class SomeBolt extends BaseRichBolt {
private OutputCollector _collector;
private SomeClient someClient;
@Override
public void prepare(Map conf, TopologyContext context, OutputCollector collector) {
_collector = collector;
someClient = AppContext.getBean(SomeClient.class);
}
}
SomeClient.java
@Component
public class SomeClient {
private final CloseableHttpClient httpClient;
public SomeClient() {
this.httpClient = (httpClient == null ? HttpClients.createDefault() : httpClient);
}
}
AppContext.java
@Component
public class AppContext implements ApplicationContextAware {
private static ApplicationContext applicationContext;
@Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
AppContext.applicationContext = applicationContext;
}
public static <T> T getBean(Class<T> c) {
return applicationContext.getBean(c);
}
}
This is probably a dependency issue.
It's a very unclear error message but I found something similar here: Hibernate NoSuchFieldError INSTANCE but only with Struts 1?