there is lot of important bugfixes in 1.1.1 so wondering whether this is going to be released as part of cdh any time soon?
We do not upgrade components in a CDH release, so CDH 5.2 will stay on Spark 1.1. The next change to the Spark version will be part of the next release of CDH which is 5.3. That might be Spark 1.1.1 or 1.2 or some other version depending on the exact time of the CDH and Spark release cylces.
Yes, in the sense that bug fixes are back ported to CDH 5.2 from the 1.1 branch. CDH 5.3 will include 1.2.0, which has a lot more improvement still. https://repository.cloudera.com/artifactory/cloudera-repos/org/apache/spark/spark-core_2.10/1.2.0-cd...