Hi Yu Li, It looks like this stalled out a bit, from May of last year, and won’t make it into 1.10.
I’m wondering if there’s a version in Blink (as a completely separate state backend?) that could be tried out? Thanks, — Ken -------------------------- Ken Krugler http://www.scaleunlimited.com custom big data solutions & training Hadoop, Cascading, Cassandra & Solr