<!-- Welcome to the Jaeger project! 👋🎉 - Please search for existing issues to avoid creating duplicate bugs/feature requests. - Please be respectful and considerate of others when commenting on issues. - Please provide as much information as possible so we all understand the issue. - If you only have a question, you may get a faster response by asking in - our chat room https://gitter.im/jaegertracing/Lobby, or - the forum https://groups.google.com/d/forum/jaeger-tracing (but please don't double post) --> ## Requirement - what kind of business use case are you trying to solve? Related to #1920 Update badger reader and writer such that we can retrieve operations by service name and span kind ## Problem - what in Jaeger blocks you from solving the requirement? <!-- required section --> <!-- If possible, describe the impact of the problem. --> ## Proposal - what do you suggest to solve the problem or improve the existing situation? <!-- It's ok if you don't have one. --> ## Any open questions to address <!-- Questions that should be answered before proceeding with implementation. -->