fx19880617 edited a comment on issue #6554:
URL:
https://github.com/apache/incubator-pinot/issues/6554#issuecomment-775522052
I'm seeing an issue of zk client connection for jdk14+ after the upgrade.
Will investigate this.
Sample stacktrace:
```
2021/02/08 15:09:32.672 WARN [ClientCnxn] [main-SendThread(localhost:2123)]
Session 0x0 for server localhost/<unresolved>:2123, unexpected error, closing
socket connection and attempting reconnect
java.nio.channels.UnresolvedAddressException: null
at sun.nio.ch.Net.checkAddress(Net.java:139) ~[?:?]
at sun.nio.ch.SocketChannelImpl.checkRemote(SocketChannelImpl.java:727)
~[?:?]
at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:741)
~[?:?]
at
org.apache.zookeeper.ClientCnxnSocketNIO.registerAndConnect(ClientCnxnSocketNIO.java:277)
~[zookeeper-3.4.13.jar:3.4.13-2d71af4dbe22557fda74f9a9b4309b15a7487f03]
at
org.apache.zookeeper.ClientCnxnSocketNIO.connect(ClientCnxnSocketNIO.java:287)
~[zookeeper-3.4.13.jar:3.4.13-2d71af4dbe22557fda74f9a9b4309b15a7487f03]
at
org.apache.zookeeper.ClientCnxn$SendThread.startConnect(ClientCnxn.java:1021)
~[zookeeper-3.4.13.jar:3.4.13-2d71af4dbe22557fda74f9a9b4309b15a7487f03]
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1064)
[zookeeper-3.4.13.jar:3.4.13-2d71af4dbe22557fda74f9a9b4309b15a7487f03]
2021/02/08 15:09:33.785 INFO [ClientCnxn] [main-SendThread(localhost:2123)]
Opening socket connection to server localhost/<unresolved>:2123. Will not
attempt to authenticate using SASL (unknown error)
2021/02/08 15:09:33.786 WARN [ClientCnxn] [main-SendThread(localhost:2123)]
Session 0x0 for server localhost/<unresolved>:2123, unexpected error, closing
socket connection and attempting reconnect
```
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