Netty Channel.close()偶爾掛起。在我們的特殊使用案例中,我們擁有一批渠道,我們的測試檢查是否容忍網絡故障。所以,在我們的測試中,我們試圖關閉一個頻道。Netty Channel.close()間歇性掛起
在下面的代碼片段中,我們在調用Channel.close()之前,在Channel.close()之後,以及在ChannelFuture.await()之後立即打印調試語句。爲了確保線程不被中斷,我們檢查InterruptedException。
Channel c = partitionChannelMap.get(partition);
if (c != null) {
for (int retries = 0; retries < numRetries; retries++) {
try {
logger.debug("Attempt {}: Closing channel to partition {}", retries + 1, partition);
logger.debug("Channel Properties - isBound() isConnected() isOpen() " + c.isBound() + " "
+ c.isConnected() + " " + c.isOpen());
ChannelFuture closeFuture = c.close();
logger.debug("About to wait");
closeFuture.await(nettyTimeout);
if (closeFuture.isSuccess()) {
logger.debug("Attempt {}: CLOSED channel to partition {}", retries + 1, partition);
partitionChannelMap.remove(partition);
break;
} else {
logger.error("Attempt {}: FAILED to close partition {}", retries + 1, partition);
continue;
}
} catch (InterruptedException e) {
logger.error("Attempt {}: FAILED to close partition {}", retries + 1, partition);
e.printStackTrace();
continue;
}
}
}
}
在一些運行(錯誤的)的,Channel.close前的調試語句()被執行,而不要立即之後。由於Channel.close()是異步的,我們期待它立即返回。在這些情況下,調用Channel.close()後執行掛起。
我在這裏假設或做錯了什麼?
樣品輸出錯誤執行 -
15:12:32.497 [Thread-7] DEBUG org.apache.s4.comm.tcp.TCPEmitter - Attempt 1: Closing channel to partition 0
15:12:32.497 [Thread-7] DEBUG org.apache.s4.comm.tcp.TCPEmitter - Channel Properties - isBound() isConnected() isOpen() true true true
我真的很感激有這方面的幫助。
謝謝