strongh/clojure-hbase — comment on commit 0f39e2b0afcf914f3bd3e588f6d0f757e9ac18b6
File:  line 0
By strongh:

Yup, we actually had this problem with one of our applications; manifested as a NullPointerException thrown by putTable. The application has a bunch of threads getting HTables out of the pool immediately upon starting, so around the same time.