Has anybody come across the following error:

(1) Start up ZooKeeper on 2 machines.
(2) Connect 2 ZooKeeper clients, one per machine.
(3) Exit one of the clients with a <CTRL>-C.

The server that client was connected to goes into an unrecoverable error
state, and continuously spits the following out to the console:

ERROR - [NIOServerCxn.Factory:[EMAIL PROTECTED] - FIXMSG
java.nio.channels.CancelledKeyException
   at gnu.java.nio.SelectionKeyImpl.readyOps(libgcj.so.81)
   at
com.yahoo.zookeeper.server.NIOServerCnxn$Factory.run(NIOServerCnxn.java:136)
ERROR - [NIOServerCxn.Factory:[EMAIL PROTECTED] - FIXMSG
java.nio.channels.CancelledKeyException
   at gnu.java.nio.SelectionKeyImpl.readyOps(libgcj.so.81)
   at
com.yahoo.zookeeper.server.NIOServerCnxn$Factory.run(NIOServerCnxn.java:136)
ERROR - [NIOServerCxn.Factory:[EMAIL PROTECTED] - FIXMSG
java.nio.channels.CancelledKeyException
   at gnu.java.nio.SelectionKeyImpl.readyOps(libgcj.so.81)
   at
com.yahoo.zookeeper.server.NIOServerCnxn$Factory.run(NIOServerCnxn.java:136)
ERROR - [NIOServerCxn.Factory:[EMAIL PROTECTED] - FIXMSG
java.nio.channels.CancelledKeyException
   at gnu.java.nio.SelectionKeyImpl.readyOps(libgcj.so.81)
   at
com.yahoo.zookeeper.server.NIOServerCnxn$Factory.run(NIOServerCnxn.java:136)
ERROR - [NIOServerCxn.Factory:[EMAIL PROTECTED] - FIXMSG
java.nio.channels.CancelledKeyException
   at gnu.java.nio.SelectionKeyImpl.readyOps(libgcj.so.81)
   at
com.yahoo.zookeeper.server.NIOServerCnxn$Factory.run(NIOServerCnxn.java:136)
ERROR - [NIOServerCxn.Factory:[EMAIL PROTECTED] - FIXMSG
java.nio.channels.CancelledKeyException
   at gnu.java.nio.SelectionKeyImpl.readyOps(libgcj.so.81)
   at
com.yahoo.zookeeper.server.NIOServerCnxn$Factory.run(NIOServerCnxn.java:136)


Notes:
---------

I cannot reproduce this every time, but I can get it about 7 times out of
10.

ZooKeeper version
---------------------------
2.2.1. from SourceForge

OS (Ubuntu)
----
Linux 2.6.22-14-generic #1 SMP Fri Feb 1 04:59:50 UTC 2008 i686 GNU/Linux

Java VM (Sun JDK)
------------
java version "1.6.0_04"
Java(TM) SE Runtime Environment (build 1.6.0_04-b12)
Java HotSpot(TM) Server VM (build 10.0-b19, mixed mode)


Satish

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