Rushabh Shah created ZOOKEEPER-4650:
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             Summary: Zookeeper client leaks file descriptor in case of 
UnknownHostException
                 Key: ZOOKEEPER-4650
                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4650
             Project: ZooKeeper
          Issue Type: Bug
          Components: java client
    Affects Versions: 3.7.1, 3.4.14
            Reporter: Rushabh Shah
         Attachments: Screen Shot 2022-12-13 at 4.30.34 PM.png

Zookeeper client is causing the file descriptor leak when it is unable to 
properly reach the destination. In this case, the DNS lookup fails but still 
leaves an unbounded TCP socket.

A colleague took a heap dump of the application. Saw 17400 
sun.nio.ch.SocketChannelImpl object reachable from root and the number matched 
the open file descriptors on the host.

!Screen Shot 2022-12-13 at 4.30.34 PM.png!

 

More analysis from the heap dump in the comment.

 



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