check all loaded configuration parameters

[#1]

Hi Folks,

              Please let me know if there is a way to check all currently loaded paramters in the running namenode and datanode process.

for example hadoop org.apache.hadoop.conf.Configuration shows me the some parameters. 

How can i check the current loaded value of the below parameter

heartbeat.recheck.interval

 Please advise.

Thank You,

Mastan

[#2 · Accepted solution]

Most Hadoop and HBase roles at least have a configuration servlet that you
can visit over at their Web Port's /conf page, for ex.
http://NNHOST:50070/conf, which would show you their loaded configuration.