removed references to correlation id

spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/instrument/circuitbreaker/TraceCommand.java

@@ -10,7 +10,7 @@ import org.springframework.cloud.sleuth.TraceScope;
  * Abstraction over {@code HystrixCommand} that wraps command execution with Trace setting
  *
  * @see HystrixCommand
- * @see CorrelationIdUpdater
+ * @see Trace
  *
  * @author Tomasz Nurkiewicz, 4financeIT
  * @author Marcin Grzejszczak, 4financeIT

spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/instrument/scheduling/TraceSchedulingAspect.java

@@ -8,8 +8,8 @@ import org.springframework.cloud.sleuth.TraceScope;
 import org.springframework.scheduling.annotation.Scheduled;
 
 /**
- * Aspect that sets correlationId for running threads executing methods annotated with {@link Scheduled} annotation.
- * For every execution of scheduled method a new, i.e. unique one, value of correlationId will be set.
+ * Aspect that creates a new Span for running threads executing methods annotated with {@link Scheduled} annotation.
+ * For every execution of scheduled method a new trace will be started.
  *
  * @author Tomasz Nurkewicz, 4financeIT
  * @author Michal Chmielarz, 4financeIT
@@ -28,7 +28,7 @@ public class TraceSchedulingAspect {
 	}
 
 	@Around("execution (@org.springframework.scheduling.annotation.Scheduled  * *.*(..))")
-	public Object setNewCorrelationIdOnThread(final ProceedingJoinPoint pjp) throws Throwable {
+	public Object traceSceduledThread(final ProceedingJoinPoint pjp) throws Throwable {
 		TraceScope scope = trace.startSpan(pjp.toShortString());
 		try {
 			return pjp.proceed();

spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/instrument/web/TraceWebAutoConfiguration.java

@@ -44,7 +44,7 @@ import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter
 public class TraceWebAutoConfiguration {
 
 	/**
-	 * Pattern for URLs that should be skipped in correlationID setting
+	 * Pattern for URLs that should be skipped in tracing
 	 */
 	@Value("${spring.cloud.sleuth.instrument.web.skipPattern:}")
 	private String skipPattern;
@@ -66,7 +66,7 @@ public class TraceWebAutoConfiguration {
 
 	@Bean
 	@ConditionalOnMissingBean
-	public FilterRegistrationBean correlationHeaderFilter() {
+	public FilterRegistrationBean traceFilter() {
 		Pattern pattern = StringUtils.hasText(skipPattern) ? Pattern.compile(skipPattern)
 				: TraceFilter.DEFAULT_SKIP_PATTERN;
 		return new FilterRegistrationBean(new TraceFilter(trace, pattern));