sbarnoud commented on a change in pull request #343: HBASE-22634 : Improve performance of BufferedMutator URL: https://github.com/apache/hbase/pull/343#discussion_r298157221
########## File path: hbase-client/src/main/java/org/apache/hadoop/hbase/ipc/AbstractRpcClient.java ########## @@ -491,13 +482,13 @@ public void close() { connToClose = connections.values(); connections.clear(); } - cleanupIdleConnectionTask.cancel(true); for (T conn : connToClose) { - conn.shutdown(); + // conn may be null in case of cancellation + if (conn != null) conn.shutdown(); Review comment: Indeed, and i didn't succeed to reproduce the NPE which was probably a consequence of all my different try when fixing HBASE-22492 .... ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services