I started pitching in more on that JIRA. To add, I think we can and should strive for doing this in a compatible manner, whatever the approach. Marking and calling it incompatible before we see proposal/patch seems premature to me. Commented the same on JIRA: https://issues.apache.org/jira/browse/HADOOP-11656?focusedCommentId=14345875&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14345875.
Thanks +Vinod On Mar 2, 2015, at 8:08 PM, Andrew Wang <andrew.w...@cloudera.com<mailto:andrew.w...@cloudera.com>> wrote: Regarding classpath isolation, based on what I hear from our customers, it's still a big problem (even after the MR classloader work). The latest Jackson version bump was quite painful for our downstream projects, and the HDFS client still leaks a lot of dependencies. Would welcome more discussion of this on HADOOP-11656, Steve, Colin, and Haohui have already chimed in.
