Github user parthchandra commented on a diff in the pull request: https://github.com/apache/drill/pull/1079#discussion_r159508398 --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/rpc/user/UserClient.java --- @@ -344,7 +344,18 @@ private boolean clientNeedsAuthExceptPlain(DrillProperties props) { mechanismName = factory.getSimpleName(); logger.trace("Will try to authenticate to server using {} mechanism with encryption context {}", mechanismName, connection.getEncryptionCtxtString()); + + // Update the thread context class loader to current class loader + // See DRILL-6063 for detailed description + final ClassLoader oldThreadCtxtCL = Thread.currentThread().getContextClassLoader(); + final ClassLoader newThreadCtxtCL = this.getClass().getClassLoader(); + Thread.currentThread().setContextClassLoader(newThreadCtxtCL); + --- End diff -- makes sense
---