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symat pushed a commit to branch branch-3.6
in repository https://gitbox.apache.org/repos/asf/zookeeper.git


The following commit(s) were added to refs/heads/branch-3.6 by this push:
     new 536593f  ZOOKEEPER-3112: fix fd leak due to UnresolvedAddressException 
on connect
536593f is described below

commit 536593f4d96b329fbf0fad6c45bbcb555f3ffebe
Author: Alexey.Saltanov <[email protected]>
AuthorDate: Tue Jul 28 08:29:28 2020 +0000

    ZOOKEEPER-3112: fix fd leak due to UnresolvedAddressException on connect
    
    SocketChannel.connect() can throw different kind of exceptions but 
ClientCnxnSocketNIO.connect() handles only IOException. This could lead to FD 
leak when socked is opened but is not connected. We should handle some 
additional exception classes and close the socket.
    
    Author: Alexey.Saltanov <[email protected]>
    
    Reviewers: Enrico Olivelli <[email protected]>, Mate Szalay-Beko 
<[email protected]>
    
    Closes #1410 from saltos/ZOOKEEPER-3112
    
    (cherry picked from commit 6a8728d98307f7d52cf6dbadb78149e01b1d0bf5)
    Signed-off-by: Mate Szalay-Beko <[email protected]>
---
 .../src/main/java/org/apache/zookeeper/ClientCnxnSocketNIO.java       | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git 
a/zookeeper-server/src/main/java/org/apache/zookeeper/ClientCnxnSocketNIO.java 
b/zookeeper-server/src/main/java/org/apache/zookeeper/ClientCnxnSocketNIO.java
index 1fe53a3..6cb125d 100644
--- 
a/zookeeper-server/src/main/java/org/apache/zookeeper/ClientCnxnSocketNIO.java
+++ 
b/zookeeper-server/src/main/java/org/apache/zookeeper/ClientCnxnSocketNIO.java
@@ -26,6 +26,8 @@ import java.nio.ByteBuffer;
 import java.nio.channels.SelectionKey;
 import java.nio.channels.Selector;
 import java.nio.channels.SocketChannel;
+import java.nio.channels.UnresolvedAddressException;
+import java.nio.channels.UnsupportedAddressTypeException;
 import java.util.Iterator;
 import java.util.Queue;
 import java.util.Set;
@@ -266,7 +268,7 @@ public class ClientCnxnSocketNIO extends ClientCnxnSocket {
         SocketChannel sock = createSock();
         try {
             registerAndConnect(sock, addr);
-        } catch (IOException e) {
+        } catch (UnresolvedAddressException | UnsupportedAddressTypeException 
| SecurityException | IOException e) {
             LOG.error("Unable to open socket to {}", addr);
             sock.close();
             throw e;

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