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From: Rakesh R <rakeshr@huawei.com>
To: "user@zookeeper.apache.org" <user@zookeeper.apache.org>,
        "zookeeper-user@hadoop.apache.org" <zookeeper-user@hadoop.apache.org>
Subject: RE: I got a problem when delete node
Thread-Topic: I got a problem when delete node
Thread-Index: AQHPXeA3lEWWEV/6kEmkf/+YrFCEzpsdDBWA
Date: Tue, 22 Apr 2014 04:42:04 +0000
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Hi Crystal,

Could you tell the reason why the ZooKeeper server hangs ? Also, how long i=
t took to reform the ZooKeeper quorum ?

>>>>>>> I have set timeout 1 min
Do you mean ZK session timeout ?

Since it lost quorum, I hope in your case the client might have received th=
e KeeperException.ConnectionLossException when performing the delete operat=
ion.=20
Probably when performing the create znode operation it was able to send the=
 request to a stable ZK quorum.

FYI: ZK client behavior is, it won't retry the operation on failure. Applic=
ation can observe the "ZKConnection Watches" and write their own logic to r=
etry it.

-Rakesh

-----Original Message-----
From: crystal [mailto:xuange1106@gmail.com]=20
Sent: 22 April 2014 08:11
To: zookeeper-user@hadoop.apache.org
Subject: I got a problem when delete node

Hi,
I started to learn zookeeper recently. Now I got a problem when using java =
client to delete zk node.
Description:
Use zookeeper java client to delete a node which already exist. like zk.del=
ete(path,-1). I have set timeout 1 min. But the zookeeper server seems to b=
e hung up. the zk server state change to connecting, and I cannot reconnect=
 it anymore. 1 min later , I got a exception "
EndOfStreamException: Unable to read additional data from client". But no p=
roblem when I create a new node.

Regards,
Crystal


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