Exception in thread "Thread-2" java.lang.OutOfMemoryError: Java heap space
        at org.apache.catalina.loader.WebappClassLoader.findResourceInternal(WebappClassLoader.java:3151)
        at org.apache.catalina.loader.WebappClassLoader.findResource(WebappClassLoader.java:1254)
        at org.apache.catalina.loader.WebappClassLoader.getResource(WebappClassLoader.java:1417)
        at org.springframework.core.io.ClassPathResource.getURL(ClassPathResource.java:175)
        at org.springframework.core.io.AbstractFileResolvingResource.contentLength(AbstractFileResolvingResource.java:152)
        at org.springframework.http.converter.ResourceHttpMessageConverter.getContentLength(ResourceHttpMessageConverter.java:81)
        at org.springframework.http.converter.ResourceHttpMessageConverter.getContentLength(ResourceHttpMessageConverter.java:45)
        at org.springframework.http.converter.AbstractHttpMessageConverter.write(AbstractHttpMessageConverter.java:180)
        at org.springframework.web.client.RestTemplate$HttpEntityRequestCallback.doWithRequest(RestTemplate.java:739)
        at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:525)
        at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:489)
        at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:431)
        at com.ccn.rfst.core.Processor$MyRunnable.sendRuleSet(Processor.java:118)
        at com.ccn.rfst.core.Processor$MyRunnable.restoreEndpointFromDisk(Processor.java:100)
        at com.ccn.rfst.core.Processor$MyRunnable.run(Processor.java:75)
        at java.lang.Thread.run(Thread.java:662)