We have an Hadoop cluster, clients are installed on Linux Red Hat machines and central management via Apache Ambari.

yum list | grep ambari-server
ambari-server.x86_64                       @ambari- 

We found a nice way to set an update of a value's via Ambari as the following:

/var/lib/ambari-server/resources/scripts/configs.sh set localhost c1 mapred-site "mapreduce.map.memory.mb" "512"

Whereby in the example:

CONFIG_TYPE = mapred-site
CONFIG_KEY = mapreduce.map.memory.mb

But we have a little problem here. In my example, mapred-site is a CONFIG-TYPE. According to the script configs.sh –help:

<CONFIG_TYPE>: One of the various configuration types in Ambari. Ex:global, core-site, hdfs-site, mapred-queue-acls, etc.

For more info about the script see documentation paragraph “Edit configuration using configs.sh”.

In order to see all CONFIG-TYPE values and CONFIG_KEY values I've generated the following blueprint.json file:

 curl  -u admin:admin -H "X-Requested-By: ambari" -X GET http://<ip>:8080/api/v1/clusters/HDP01?format=blueprint -o /tmp/blueprint.json
 grep "\-site" /tmp/blueprint.json

  "tez-interactive-site" : {
  "hdfs-site" : {
  "yarn-site" : {
  "hiveserver2-site" : {
  "ams-hbase-security-site" : {
  "ams-site" : {
  "mapred-site" : {
  "hive-site" : {
  "tez-site" : {
  "webhcat-site" : {

So how to know the right CONFIG_TYPE value for the CONFIG_KEY value?

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As far as I understand from your description and question you seems to be interested in a complete list of properties which are used in the Hadoop framework. For the meaning of each property, possible, recommended or good values, I like to recommend to follow up with the official framework documentation.

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