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From "Mich Talebzadeh" <m...@peridale.co.uk>
Subject RE: ipc.Client: Retrying connect to server
Date Sun, 19 Apr 2015 17:09:05 GMT
Hi,

 

In addition, perhaps an easier approach would be a telnet to test quickly if
server is started on a given port

 

Mine runs on port 9000 so if it works the telnet opening will be successful.

 

netstat -plten|grep java

 

tcp        0      0 0.0.0.0:10020               0.0.0.0:*
LISTEN      1009       19471      6898/java

tcp        0      0 0.0.0.0:50020               0.0.0.0:*
LISTEN      1009       15758      6213/java

tcp        0      0 50.140.197.217:9000         0.0.0.0:*
LISTEN      1009       15711      6113/java

tcp        0      0 0.0.0.0:50090               0.0.0.0:*
LISTEN      1009       15972      6405/java

tcp        0      0 0.0.0.0:19888               0.0.0.0:*
LISTEN      1009       18565      6898/java

tcp        0      0 0.0.0.0:10033               0.0.0.0:*
LISTEN      1009       18343      6898/java

tcp        0      0 0.0.0.0:50070               0.0.0.0:*
LISTEN      1009       15502      6113/java

tcp        0      0 0.0.0.0:10010               0.0.0.0:*
LISTEN      1009       21433      7335/java

tcp        0      0 0.0.0.0:50010               0.0.0.0:*
LISTEN      1009       15745      6213/java

tcp        0      0 0.0.0.0:9083                0.0.0.0:*
LISTEN      1009       19481      7110/java

tcp        0      0 0.0.0.0:50075               0.0.0.0:*
LISTEN      1009       15750      6213/java

 

hduser@rhes564::/home/hduser/dba/bin> telnet rhes564 9000

Trying 50.140.197.217...

Connected to rhes564.

Escape character is '^]'.

 

HTH

 

Mich Talebzadeh

 

http://talebzadehmich.wordpress.com

 

Author of the books "A Practitioner's Guide to Upgrading to Sybase ASE 15",
ISBN 978-0-9563693-0-7. 

co-author "Sybase Transact SQL Guidelines Best Practices", ISBN
978-0-9759693-0-4

Publications due shortly:

Creating in-memory Data Grid for Trading Systems with Oracle TimesTen and
Coherence Cache

Oracle and Sybase, Concepts and Contrasts, ISBN: 978-0-9563693-1-4, volume
one out shortly

 

NOTE: The information in this email is proprietary and confidential. This
message is for the designated recipient only, if you are not the intended
recipient, you should destroy it immediately. Any information in this
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subsidiaries or their employees, unless expressly so stated. It is the
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therefore neither Peridale Ltd, its subsidiaries nor their employees accept
any responsibility.

 

From: Brahma Reddy Battula [mailto:brahmareddy.battula@hotmail.com] 
Sent: 19 April 2015 17:53
To: user@hadoop.apache.org
Subject: RE: ipc.Client: Retrying connect to server

 

Hello Mahmood Naderan,

 

When client is trying to connect to server with configured port(and address)
and server is not started with that port then client will retry ( and you
will get following error..)..

 

I can able to trace that Namenode is not running From JPS report which you
had posted..Please check the namenode logs ( location :
/home/mahmood/bigdatabench/apache/hadoop-1.0.2/libexec/../logs/hadoop-mahmoo
d-namenode-tiger.out/log)

 

  _____  

Date: Fri, 17 Apr 2015 08:22:12 +0000
From: nt_mahmood@yahoo.com
To: user@hadoop.apache.org
Subject: ipc.Client: Retrying connect to server

Hello,

I have done all steps (as far as I know) to bring up the hadoop. However, I
get the this error

 

15/04/17 12:45:31 INFO ipc.Client: Retrying connect to server:
localhost/127.0.0.1:54310. Already tried 0 time(s).





There are a lot of threads and posts regarding this error and I tried them.
However still stuck at this error :(

 

Can someone help me? What did I wrong?



 

 

 





Here are the configurations:





1) Hadoop configurations

[mahmood@tiger hadoop-1.0.2]$ cat conf/mapred-site.xml
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!-- Put site-specific property overrides in this file. -->
<configuration>
<property>
  <name>mapred.job.tracker</name>
  <value>localhost:54311</value>
</property>
<property>
  <name>mapred.child.java.opts</name>
  <value>-Xmx512m</value>
</property>
</configuration>







[mahmood@tiger hadoop-1.0.2]$ cat conf/core-site.xml
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!-- Put site-specific property overrides in this file. -->
<configuration>
<property>
  <name>fs.default.name</name>
  <value>hdfs://localhost:54310</value>
</property>
</configuration>







[mahmood@tiger hadoop-1.0.2]$ cat conf/hdfs-site.xml
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!-- Put site-specific property overrides in this file. -->
<configuration>
<property>
  <name>dfs.replication</name>
  <value>1</value>
</property>
<property>
  <name>hadoop.tmp.dir</name>
  <value>/home/mahmood/bigdatabench/apache/hadoop-1.0.2/folders/tmp</value>
</property>
<property>
  <name>dfs.name.dir</name>
  <value>/home/mahmood/bigdatabench/apache/hadoop-1.0.2/folders/name</value>
</property>
<property>
  <name>dfs.data.dir</name>
  <value>/home/mahmood/bigdatabench/apache/hadoop-1.0.2/folders/data</value>
</property>
</configuration>



 

 

 

 

 

2) Network configuration

[root@tiger hadoop-1.0.2]# cat /etc/sysconfig/iptables
# Firewall configuration written by system-config-firewall
# Manual customization of this file is not recommended.
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 5901 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 2049 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 54310 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 54311 -j ACCEPT
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
COMMIT

 

[root@tiger hadoop-1.0.2]# /etc/init.d/iptables restart
iptables: Flushing firewall rules:                         [  OK  ]
iptables: Setting chains to policy ACCEPT: filter          [  OK  ]
iptables: Unloading modules:                               [  OK  ]
iptables: Applying firewall rules:                         [  OK  ]

 

[mahmood@tiger hadoop-1.0.2]$ netstat -an | grep 54310

[mahmood@tiger hadoop-1.0.2]$ netstat -an | grep 54311
tcp        0      0 ::ffff:127.0.0.1:54311      :::*
LISTEN
tcp      426      0 ::ffff:127.0.0.1:54311      ::ffff:127.0.0.1:49639
ESTABLISHED
tcp        0      0 ::ffff:127.0.0.1:49639      ::ffff:127.0.0.1:54311
ESTABLISHED

 

 

 

 

 

 

3) Starting Hadoop

[mahmood@tiger hadoop-1.0.2]$ stop-all.sh
Warning: $HADOOP_HOME is deprecated.

stopping jobtracker
localhost: Warning: $HADOOP_HOME is deprecated.
localhost:
localhost: stopping tasktracker
no namenode to stop
localhost: Warning: $HADOOP_HOME is deprecated.
localhost:
localhost: no datanode to stop
localhost: Warning: $HADOOP_HOME is deprecated.
localhost:
localhost: stopping secondarynamenode

 

[mahmood@tiger hadoop-1.0.2]$ start-all.sh
Warning: $HADOOP_HOME is deprecated.

starting namenode, logging to
/home/mahmood/bigdatabench/apache/hadoop-1.0.2/libexec/../logs/hadoop-mahmoo
d-namenode-tiger.out
localhost: Warning: $HADOOP_HOME is deprecated.
localhost:
localhost: starting datanode, logging to
/home/mahmood/bigdatabench/apache/hadoop-1.0.2/libexec/../logs/hadoop-mahmoo
d-datanode-tiger.out
localhost: Warning: $HADOOP_HOME is deprecated.
localhost:
localhost: starting secondarynamenode, logging to
/home/mahmood/bigdatabench/apache/hadoop-1.0.2/libexec/../logs/hadoop-mahmoo
d-secondarynamenode-tiger.out
starting jobtracker, logging to
/home/mahmood/bigdatabench/apache/hadoop-1.0.2/libexec/../logs/hadoop-mahmoo
d-jobtracker-tiger.out
localhost: Warning: $HADOOP_HOME is deprecated.
localhost:
localhost: starting tasktracker, logging to
/home/mahmood/bigdatabench/apache/hadoop-1.0.2/libexec/../logs/hadoop-mahmoo
d-tasktracker-tiger.out

 

[mahmood@tiger hadoop-1.0.2]$ jps
21712 JobTracker
21882 TaskTracker
21580 SecondaryNameNode
21989 Jps

 

[mahmood@tiger hadoop-1.0.2]$ hadoop dfsadmin -report
Warning: $HADOOP_HOME is deprecated.
15/04/17 12:45:31 INFO ipc.Client: Retrying connect to server:
localhost/127.0.0.1:54310. Already tried 0 time(s).
15/04/17 12:45:32 INFO ipc.Client: Retrying connect to server:
localhost/127.0.0.1:54310. Already tried 1 time(s).

 

Regards,
Mahmood


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