I can't execute my Hadoop jar in pseudo distributed (in case you need to see my configuration I follow this tutorial my pseudo distributed settings) from PHP using any PHP function like shell_exec, exec, system. When I tried to execute jar, my browser show loading icon in the tab but when I checked Hadoop app history nothing is running. What make it even worse is there is no error message appear. I have already check my /var/log/apache2/error.log and nothings there.
So this is my experiment for running the code.
//1.Run in the command prompt works perfectly fine.
/usr/local/hadoop-2.9.1/bin/hadoop jar path_to_my_jar_file.jar main_class_name args
number 2,3,4 is all the php code that I type.
//2. Run using shell_exec nothing happens
var_dump(shell_exec("/usr/local/hadoop-2.9.1/bin/hadoop jar path_to_my_jar_file.jar main_class_name args"));
//3. Run using exec I got array(0) { }
$retval = array();
exec("/usr/local/hadoop-2.9.1/bin/hadoop jar path_to_my_jar_file.jar main_class_name args",$retval);
var_dump( $retval);
//4. Run using system I got 1
system("/usr/local/hadoop-2.9.1/bin/hadoop jar path_to_my_jar_file.jar main_class_name args",$retval);
var_dump( $retval);
Additional Note:
I found this Running MapReduce job written in Java through my PHP web page question but I don't think I have a permission problem since I can execute this.
shell_exec("/usr/local/hadoop-2.9.1/bin/hadoop fs -mkdir /test");
I even tried to change apache user but still not working. Am I missing something? Thanks in advanced :)
UPDATE 1
Deleting this property in mapred-site.xml make php exec working but I can't see the mapreduce progress in resource manager (localhost:8088) and I also need it.
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
<description>MapReduce framework name</description>
</property>
