Known Issues

• [Profiling] A performance regression was introduced with #2408. Excessive calls to get getCurrentThreadCpuTime() may impact cpu performance for some workloads when profiling is enabled.

Improvements

• Vert.x 3.9 MySQLClient instrumentation #2560

Changes

• Disable tracer metrics until trace agent 7.28.0 is released #2569 #2567
• Avoid converting binary mongo document to tree #2565
• Address various JDBC instrumentation issues #2561
• Remove deprecated AbstractSampler #2559
• setMeasured(true) for DB spans #2522
• [Profiling] Fix Oracle JDK8 support #2551