I set up a pseudo mode, it also needs to close the firewall? Yong
On Thu, Jan 5, 2012 at 4:59 PM, Tom Wilcox <tom.wil...@cse.org.uk> wrote: > I've seen that error before. Have you tried turning off your firewalls on > each node? > > I do it like this: > > cat $HADOOP_INSTALL/conf/slaves | xargs -I{} ssh root@{} > '/etc/init.d/iptables stop' > ssh root@jobtracker '/etc/init.d/iptables stop' > ssh root@namenode '/etc/init.d/iptables stop' > > Worth a crack if you haven't tried it yet. > ________________________________________ > From: Leonardo Gamas [leoga...@jusbrasil.com.br] > Sent: 05 January 2012 15:45 > To: user@hbase.apache.org > Subject: Re: zookeeper connection problem in pseudo mode > > I had a similar problem some time ago. The problem seems to be in the ipv6 > configuration. I solved it disabling ipv6 on my host editing /etc/hosts. > > 2012/1/5 yonghu <yongyong...@gmail.com> > >> Hallo, >> >> I tried the pseudo distribution mode of HBase. The Hadoop version is >> 0.20.2. I configured the hbase-site.xml as >> >> <configuration> >> <property> >> <name>hbase.rootdir</name> >> <value>hdfs://localhost:9000/hbase</value> >> </property> >> <property> >> <name>dfs.replication</name> >> <value>1</value> >> </property> >> </configuration> >> >> as same as in core-site.xml and hdfs-site.xml files of Hadoop, separately. >> >> I can successfully start HBase. But when I tried to create a table, I >> got following error information: >> ERROR: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is >> able to connect to ZooKeeper but the connection closes immediately. >> This could be a sign that the server has too many connections (30 is >> the default). Consider inspecting your ZK server logs for that error >> and then make sure you are reusing HBaseConfiguration as often as you >> can. See HTable's javadoc for more information. >> >> And I checked my ZK log and found: >> >> 2012-01-05 15:59:02,909 INFO org.apache.zookeeper.ClientCnxn: Opening >> socket connection to server localhost/0:0:0:0:0:0:0:1:2181 >> 2012-01-05 15:59:02,909 WARN org.apache.zookeeper.ClientCnxn: Session >> 0x134ae4d4a6d0001 for server null, unexpected error, closing socket >> connection and attempting reconnect >> java.net.ConnectException: Connection refused >> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) >> at >> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567) >> at >> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119) >> >> This error information appeared repeatly. Can anyone tell how to solve >> this problem? >> >> Thanks! >> >> Yong >> > > > > -- > > *Leonardo Gamas* > Software Engineer > +557134943514 > +557581347440 > leoga...@jusbrasil.com.br > www.jusbrasil.com.br