Apache9 commented on a change in pull request #343: HBASE-22634 : Improve performance of BufferedMutator URL: https://github.com/apache/hbase/pull/343#discussion_r298119918
########## 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: The code you paste here do not set the value to null I think? If you actually hit an NPE, then I think there must be something wrong at other places. Looking at the code for PoolMap, which pool type do you use? ---------------------------------------------------------------- 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