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
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File path:
hbase-client/src/main/java/org/apache/hadoop/hbase/ipc/AbstractRpcClient.java
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@@ -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?
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