While working on high availability (HA) for Flink's YARN execution I stumbled across some limitations with Hadoop 2.2.0. From version 2.2.0 to 2.3.0, Hadoop introduced new functionality which is required for an efficient HA implementation. Therefore, I was wondering whether there is actually a need to support Hadoop 2.2.0. Is Hadoop 2.2.0 still actively used by someone?
Cheers, Till
