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From: "Jonathan Hurley (JIRA)" <jira@apache.org>
To: dev@ambari.apache.org
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 <JIRA.12781053.1426034753921@arcas>
Subject: [jira] [Created] (AMBARI-10021) Python Does Not Close Alert TCP
 Connections Reliably
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Jonathan Hurley created AMBARI-10021:
----------------------------------------

             Summary: Python Does Not Close Alert TCP Connections Reliably
                 Key: AMBARI-10021
                 URL: https://issues.apache.org/jira/browse/AMBARI-10021
             Project: Ambari
          Issue Type: Bug
          Components: ambari-agent
    Affects Versions: 2.0.0
            Reporter: Jonathan Hurley
            Assignee: Jonathan Hurley
            Priority: Critical
             Fix For: 2.0.0


During installs, we've seen a process bound to port 50070. This causes the NN to abort startup.

This is with build: 1129

{noformat}
root@hdp2-02-01 hdfs]# netstat -anp | grep 50070
tcp 0 0 192.168.1.141:50070 192.168.1.141:50070 ESTABLISHED 1630/python2.6

[root@hdp2-02-01 hdfs]# ps aux | grep 1630
root 1630 2.7 1.0 837364 50508 ? Sl Mar07 114:13 /usr/bin/python2.6
/usr/lib/python2.6/site-packages/ambari_agent/main.py start restart
root 16057 0.0 0.0 103252 820 pts/0 S+ 08:54 0:00 grep 1630
{noformat}

The NN Log is: 

{noformat}
2015-03-10 08:50:13,046 FATAL namenode.NameNode (NameNode.java:main(1509))
- Failed to start namenode.
java.net.BindException: Port in use: 192.168.1.141:50070
at org.apache.hadoop.http.HttpServer2.openListeners(HttpServer2.java:891)
at org.apache.hadoop.http.HttpServer2.start(HttpServer2.java:827)
at 
org.apache.hadoop.hdfs.server.namenode.NameNodeHttpServer.start(NameNodeHtt
pServer.java:142)
at 
org.apache.hadoop.hdfs.server.namenode.NameNode.startHttpServer(NameNode.ja
va:703)
at 
org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:59
0)
at 
org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:762)
at 
org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:746)
at 
org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.jav
a:1438)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1504)
Caused by: java.net.BindException: Address already in use
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:444)
at sun.nio.ch.Net.bind(Net.java:436)
at 
sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:214)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at 
org.mortbay.jetty.nio.SelectChannelConnector.open(SelectChannelConnector.ja
va:216)
at org.apache.hadoop.http.HttpServer2.openListeners(HttpServer2.java:886)
... 8 more
2015-03-10 08:50:13,056 INFO util.ExitUtil (ExitUtil.java:terminate(124))
- Exiting with status 1
2015-03-10 08:50:13,068 INFO namenode.NameNode (StringUtils.java:run(659))
- SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at
192.168.1.141/192.168.1.141
************************************************************/
{noformat}



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