Nice! Thanks for sharing, I wasn’t aware of the new API. Left some comments on the JIRA and design doc.
-adrian From: Shixiong Zhu Date: Tuesday, November 3, 2015 at 3:32 AM To: Thúy Hằng Lê Cc: Adrian Tanase, "user@spark.apache.org<mailto:user@spark.apache.org>" Subject: Re: Spark Streaming data checkpoint performance "trackStateByKey" is about to be added in 1.6 to resolve the performance issue of "updateStateByKey". You can take a look at https://issues.apache.org/jira/browse/SPARK-2629 and https://github.com/apache/spark/pull/9256
