I am trying to start a Hive server using Java program.
This is my Java code.
p = Runtime.getRuntime().exec("/home/bigdata/hive/bin/hive --service hiveserver");
p.waitFor();
Error:
Cannot find hadoop installation: $HADOOP_HOME or $HADOOP_PREFIX must be set or hadoop must be in the path
I started my hdfs. But also i am getting this error
Runtime.exec() is not going to run your .bashr, see Bash Startup Files. Your exec() call process should inherit your caller environemnt, but apparently the caller is missing the HADOOP_HOME. I can't guess why is that, probably something related to how/when is your own Java program invoked. One way to fix it is to run bash -l -c hive --service ... if you want bash to run the startup files and then run your command. But probably a better approach is to explicitly set the environment you want to pass down to your process. See How do I set environment variables from Java?
Ultimately, why? Usually all hive services should be started from init.d
