Its not currently used as far as I know. Drill used this at some point, but we removed it due to issues in multicast/subnet scenarios in Drill distributed mode.
-Neeraja On Mon, Mar 28, 2016 at 12:49 PM, Pradeeban Kathiravelu < [email protected]> wrote: > Hi, > [1] states that Drill uses Hazelcast as an embedded distributed cache to > distribute and store metadata and locality information. > > However, when I cloned the git repository and looked into the code, it does > not look like Hazelcast is used, except for some unused variable > definitions and pom definitions. > > I also found a resolved bug report on Hazelcast cluster membership [2]. > > May I know whether Hazelcast is currently used by Drill, and what does > exactly Drill achieve by using it? Relevant pointers to existing > discussions (if this was already discussed) or code location (if this was > indeed implemented in Drill) are also appreciated. > > [1] > > http://www.slideshare.net/Hadoop_Summit/understanding-the-value-and-architecture-of-apache-drill > [2] https://issues.apache.org/jira/browse/DRILL-489 > > Thank you. > Regards, > Pradeeban. > -- > Pradeeban Kathiravelu. > PhD Researcher, Erasmus Mundus Joint Doctorate in Distributed Computing, > INESC-ID Lisboa / Instituto Superior Técnico, Universidade de Lisboa, > Portugal. > Biomedical Informatics Software Engineer, Emory University School of > Medicine. > > Blog: [Llovizna] http://kkpradeeban.blogspot.com/ > LinkedIn: www.linkedin.com/pub/kathiravelu-pradeeban/12/b6a/b03 >
