Too many CLOSE_WAIT socket state on a server
Issue Type: Bug
Affects Versions: 3.2.1
Environment: Linux 2.6.9
Reporter: Qian Ye
Fix For: 3.3.0
I have a zookeeper cluster with 5 servers, zookeeper version 3.2.1, here is the
content in the configure file, zoo.cfg
# The number of milliseconds of each tick
# The number of ticks that the initial
# synchronization phase can take
# The number of ticks that can pass between
# sending a request and getting an acknowledgement
# the directory where the snapshot is stored.
# the port at which the clients will connect
# zookeeper cluster list
Before the problem happened, the server.200 was the leader. Yesterday morning,
I found the there were many sockets with the state of CLOSE_WAIT on the
clientPort (8181), the total was over about 120. Because of these CLOSE_WAIT,
the server.200 could not accept more connections from the clients. The only
thing I can do under this situation is restart the server.200, at about
2010-02-01 06:06:35. The related log is attached to the issue.
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