Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/5584#discussion_r28662027
--- Diff:
network/common/src/main/java/org/apache/spark/network/server/TransportChannelHandler.java
---
@@ -93,4 +103,25 @@ public void channelRead0(ChannelHandlerContext ctx,
Message request) {
responseHandler.handle((ResponseMessage) request);
}
}
+
+ /** Triggered based on events from an {@link
io.netty.handler.timeout.IdleStateHandler}. */
+ @Override
+ public void userEventTriggered(ChannelHandlerContext ctx, Object evt)
throws Exception {
+ if (evt instanceof IdleStateEvent) {
+ IdleStateEvent e = (IdleStateEvent) evt;
+ // See class comment for timeout semantics. In addition to ensuring
we only timeout while
+ // there are outstanding requests, we also do a secondary
consistency check to ensure
+ // there's no race between the idle timeout and incrementing the
numOutstandingRequests.
+ boolean hasInFlightRequests =
responseHandler.numOutstandingRequests() > 0;
+ boolean isActuallyOverdue =
+ System.nanoTime() - responseHandler.getTimeOfLastRequestNs() >
requestTimeoutNs;
+ if (e.state() == IdleState.ALL_IDLE && hasInFlightRequests &&
isActuallyOverdue) {
+ String address = NettyUtils.getRemoteAddress(ctx.channel());
+ logger.error("Channel to {} has been quiet for {} ms while there
are outstanding " +
--- End diff --
Channel -> Connection?
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