bin and sbin commands don't use JAVA_HOME when run from the tarball
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Key: HADOOP-7894
URL: https://issues.apache.org/jira/browse/HADOOP-7894
Project: Hadoop Common
Issue Type: Bug
Components: build
Affects Versions: 0.23.0
Reporter: Eli Collins
When running eg ./sbin/start-dfs.sh from a tarball the scripts complain
JAVA_HOME is not set and could not be found even if the env var is set.
{noformat}
hadoop-0.24.0-SNAPSHOT $ echo $JAVA_HOME
/home/eli/toolchain/jdk1.6.0_24-x64
hadoop-0.24.0-SNAPSHOT $ ./sbin/start-dfs.sh
log4j:ERROR Could not find value for key log4j.appender.NullAppender
log4j:ERROR Could not instantiate appender named "NullAppender".
Starting namenodes on [localhost]
localhost: Error: JAVA_HOME is not set and could not be found.
{noformat}
I have to explicitly set this via hadoop-env.
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