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From "Haoquan Wang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-4063) Unable to change JAVA_HOME directory in hadoop-setup-conf.sh script.
Date Tue, 16 Oct 2012 09:49:03 GMT
Haoquan Wang created HDFS-4063:
----------------------------------

             Summary: Unable to change JAVA_HOME directory in hadoop-setup-conf.sh script.
                 Key: HDFS-4063
                 URL: https://issues.apache.org/jira/browse/HDFS-4063
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: scripts, tools
    Affects Versions: 1.0.3
         Environment: Fedora 17 3.3.4-5.fc17.x86_64t, java version "1.7.0_06-icedtea", Rackspace
Cloud (NextGen)
            Reporter: Haoquan Wang
            Priority: Minor
             Fix For: 1.0.3


The JAVA_HOME directory remains unchanged no matter what you enter when you run hadoop-setup-conf.sh
to generate hadoop configurations. Please see below example:

*********************************************************
[root@hadoop-slave ~]# /sbin/hadoop-setup-conf.sh
Setup Hadoop Configuration

Where would you like to put config directory? (/etc/hadoop)
Where would you like to put log directory? (/var/log/hadoop)
Where would you like to put pid directory? (/var/run/hadoop)
What is the host of the namenode? (hadoop-slave)
Where would you like to put namenode data directory? (/var/lib/hadoop/hdfs/namenode)
Where would you like to put datanode data directory? (/var/lib/hadoop/hdfs/datanode)
What is the host of the jobtracker? (hadoop-slave)
Where would you like to put jobtracker/tasktracker data directory? (/var/lib/hadoop/mapred)
Where is JAVA_HOME directory? (/usr/java/default) *+/usr/lib/jvm/jre+*
Would you like to create directories/copy conf files to localhost? (Y/n)

Review your choices:

Config directory            : /etc/hadoop
Log directory               : /var/log/hadoop
PID directory               : /var/run/hadoop
Namenode host               : hadoop-slave
Namenode directory          : /var/lib/hadoop/hdfs/namenode
Datanode directory          : /var/lib/hadoop/hdfs/datanode
Jobtracker host             : hadoop-slave
Mapreduce directory         : /var/lib/hadoop/mapred
Task scheduler              : org.apache.hadoop.mapred.JobQueueTaskScheduler
JAVA_HOME directory         : *+/usr/java/default+*
Create dirs/copy conf files : y

Proceed with generate configuration? (y/N) n
User aborted setup, exiting...
*********************************************************

Resolution:
Amend line 509 in file /sbin/hadoop-setup-conf.sh

from:

JAVA_HOME=${USER_USER_JAVA_HOME:-$JAVA_HOME}

to:

JAVA_HOME=${USER_JAVA_HOME:-$JAVA_HOME}

will resolve this issue.

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