Apache HTrace Copyright 2015 The Apache Software Foundation This product includes software developed at The Apache Software Foundation (http://www.apache.org/). In addition, this product includes software dependencies. See the accompanying LICENSE.txt for a listing of dependencies that are NOT Apache licensed (with pointers to their licensing) Apache HTrace includes an Apache Thrift connector to Zipkin. Zipkin is a distributed tracing system that is Apache 2.0 Licensed. Copyright 2012 Twitter, Inc.