Ray 0.7.5 Release Notes

Ray API

• Objects created with ray.put() are now reference counted. #5590
• Add internal pin_object_data() API. #5637
• Initial support for pickle5. #5611
• Warm up Ray on ray.init(). #5685
• redis_address passed to ray.init is now just address. #5602

Core

• Progress towards a common C++ core worker. #5516, #5272, #5566, #5664
• Fix log monitor stall with many log files. #5569
• Print warnings when tasks are unschedulable. #5555
• Take into account resource queue lengths when autoscaling #5702, #5684

Tune

• TF2.0 TensorBoard support. #5547, #5631
• tune.function() is now deprecated. #5601

RLlib

• Enhancements for TF eager support. #5625, #5683, #5705
• Fix DDPG regression. #5626

Other Libraries

• Complete rewrite of experimental serving library. #5562
• Progress toward Ray projects APIs. #5525, #5632, #5706
• Add TF SGD implementation for training. #5440
• Many documentation improvements and bugfixes.