warrenzhu25 commented on code in PR #41071:
URL: https://github.com/apache/spark/pull/41071#discussion_r1197093878


##########
common/network-common/src/main/java/org/apache/spark/network/server/TransportChannelHandler.java:
##########
@@ -163,14 +163,11 @@ public void userEventTriggered(ChannelHandlerContext ctx, 
Object evt) throws Exc
         if (e.state() == IdleState.ALL_IDLE && isActuallyOverdue) {
           if (responseHandler.hasOutstandingRequests()) {
             String address = getRemoteAddress(ctx.channel());
-            logger.error("Connection to {} has been quiet for {} ms while 
there are outstanding " +
-              "requests. Assuming connection is dead; please adjust" +
-              " spark.{}.io.connectionTimeout if this is wrong.",
-              address, requestTimeoutNs / 1000 / 1000, 
transportContext.getConf().getModuleName());
-            client.timeOut();
-            ctx.close();

Review Comment:
   if `closeIdleConnection` is `true`, idle connection still be closed. If 
false, the client will wait forever. I have followup change to allow user to 
config `closeIdleConnection` and `requestTimeout`.



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