normanmaurer commented on a change in pull request #753: ZOOKEEPER-3204:
Reconfig tests are constantly failing on 3.5 after applying Java 11 fix
URL: https://github.com/apache/zookeeper/pull/753#discussion_r254248090
##########
File path:
zookeeper-server/src/main/java/org/apache/zookeeper/ClientCnxnSocketNetty.java
##########
@@ -291,33 +355,36 @@ private void doWrite(List<Packet> pendingQueue, Packet
p, ClientCnxn cnxn) {
pendingQueue.add(p);
}
}
- sendPkt(p);
+ sendPktOnly(p);
}
if (outgoingQueue.isEmpty()) {
break;
}
p = outgoingQueue.remove();
}
+ // TODO: maybe we should flush in the loop above every N packets/bytes?
+ // But, how do we determine the right value for N ...
+ channel.flush();
Review comment:
That said the easiest way to optimise this somehow is to add the
`FlushConsolidationHandler` to the pipeline. It should be placed before your
client / server handler:
https://github.com/netty/netty/blob/netty-4.1.33.Final/handler/src/main/java/io/netty/handler/flush/FlushConsolidationHandler.java
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