Github user arunmahadevan commented on the issue:
https://github.com/apache/storm/pull/2498
I think "option 2" is good for Storm 2.0 and it may be ok have the users
rebuild their topologies that relies on storm-druid and use the relocated
package names. With "option 4", users have to ensure that the relocated
storm-client jar is present in any storm class paths instead of the regular
storm-client jar, so may be tricky.---
