ferenc-csaky commented on code in PR #23183:
URL: https://github.com/apache/flink/pull/23183#discussion_r1306611189
##########
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/netty/NettyServer.java:
##########
@@ -145,7 +144,35 @@ int init(
// Start Server
// --------------------------------------------------------------------
- bindFuture = bootstrap.bind().syncUninterruptibly();
+ LOG.debug(
+ "Trying to initialize Netty server on address: {} and port
range {}",
+ config.getServerAddress(),
+ config.getServerPortRange());
+
+ Iterator<Integer> portsIterator =
config.getServerPortRange().getPortsIterator();
+ while (portsIterator.hasNext() && bindFuture == null) {
+ Integer port = portsIterator.next();
+ LOG.debug("Trying to bind Netty server to port: {}", port);
+
+ bootstrap.localAddress(config.getServerAddress(), port);
+ try {
+ bindFuture = bootstrap.bind().syncUninterruptibly();
+ } catch (Exception e) {
Review Comment:
Probably yes, but Netty wraps and throws any kind of exception via
`FailedChannelFuture`, which is not specified really well, so not without a lot
more digging.
Furthermore I copied this "pattern" from the codebase, so I considered it
good enough:
https://github.com/apache/flink/blob/42f170b192049bc573efddd3f82169bb327b3fe4/flink-runtime/src/main/java/org/apache/flink/runtime/rest/RestServerEndpoint.java#L275
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