Why not all parameters from ambari cluster not represented by the blueprint json file

[#1]

Why not all parameters from ambari cluster not represented by the blueprint json file ?

I generated the blueprint json file as the foolwing:

curl -u admin:admin -H "X-Requested-By: ambari" -X GET http://10.23.4.122:8080/api/v1/clusters/HDP26?format=blueprint -o /tmp/HDP01_blueprint.json

but when I access to the ambari GUI we noticed that many parameters not appears in the blueprint json file

example of parameters from HDFS – config that not appears in the blueprint json file

DataNode failed disk tolerance

DataNode maximum Java heap size

DataNode max data transfer threads

[#2 · Accepted solution]

These attributes are available in the blueprint.json file:

DataNode failed disk tolerance - Described as

dfs.datanode.failed.volumes.tolerated

DataNode maximum Java heap size - Described as

dtnode_heapsize

DataNode max data transfer threads - Described as

dfs.datanode.max.transfer.threads

I retrieved the full blueprint by using the following cURL statement:

curl -H "X-Requested-By: ambari" -X GET -u admin:admin <URL>:8080/api/v1/clusters/<CLUSTER_NAME>?format=blueprint > out.blueprint