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From "Stephen O'Donnell (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-12910) Secure Datanode Starter should log the port when it
Date Wed, 13 Dec 2017 21:43:01 GMT

     [ https://issues.apache.org/jira/browse/HDFS-12910?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Stephen O'Donnell updated HDFS-12910:
-------------------------------------
    Attachment: HDFS-12910.005.patch

> Secure Datanode Starter should log the port when it 
> ----------------------------------------------------
>
>                 Key: HDFS-12910
>                 URL: https://issues.apache.org/jira/browse/HDFS-12910
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>    Affects Versions: 3.1.0
>            Reporter: Stephen O'Donnell
>            Assignee: Stephen O'Donnell
>            Priority: Minor
>         Attachments: HDFS-12910.001.patch, HDFS-12910.002.patch, HDFS-12910.003.patch,
HDFS-12910.004.patch, HDFS-12910.005.patch
>
>
> When running a secure data node, the default ports it uses are 1004 and 1006. Sometimes
other OS services can start on these ports causing the DN to fail to start (eg the nfs service
can use random ports under 1024).
> When this happens an error is logged by jsvc, but it is confusing as it does not tell
you which port it is having issues binding to, for example, when port 1004 is used by another
process:
> {code}
> Initializing secure datanode resources
> java.net.BindException: Address already in use
>         at sun.nio.ch.Net.bind0(Native Method)
>         at sun.nio.ch.Net.bind(Net.java:433)
>         at sun.nio.ch.Net.bind(Net.java:425)
>         at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
>         at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
>         at org.apache.hadoop.hdfs.server.datanode.SecureDataNodeStarter.getSecureResources(SecureDataNodeStarter.java:105)
>         at org.apache.hadoop.hdfs.server.datanode.SecureDataNodeStarter.init(SecureDataNodeStarter.java:71)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>         at java.lang.reflect.Method.invoke(Method.java:498)
>         at org.apache.commons.daemon.support.DaemonLoader.load(DaemonLoader.java:207)
> Cannot load daemon
> Service exit with a return value of 3
> {code}
> And when port 1006 is used:
> {code}
> Opened streaming server at /0.0.0.0:1004
> java.net.BindException: Address already in use
>         at sun.nio.ch.Net.bind0(Native Method)
>         at sun.nio.ch.Net.bind(Net.java:433)
>         at sun.nio.ch.Net.bind(Net.java:425)
>         at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
>         at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
>         at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:67)
>         at org.apache.hadoop.hdfs.server.datanode.SecureDataNodeStarter.getSecureResources(SecureDataNodeStarter.java:129)
>         at org.apache.hadoop.hdfs.server.datanode.SecureDataNodeStarter.init(SecureDataNodeStarter.java:71)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>         at java.lang.reflect.Method.invoke(Method.java:498)
>         at org.apache.commons.daemon.support.DaemonLoader.load(DaemonLoader.java:207)
> Cannot load daemon
> Service exit with a return value of 3
> {code}
> We should catch the BindException exception and log out the problem address:port and
then re-throw the exception to make the problem more clear.
> I will upload a patch for this.



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