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The Stack definitions can be found in the source tree at /ambari-server/src/main/resources/stacks. After you install the Ambari Server, the Stack definitions can be found at /var/lib/ambari-server/resources/stacks

Stack Properties

The stack must contain or inherit a properties directory which contains two files: stack_features.json and stack_tools.json.  This directory is new in Ambari 2.4.

The stack_features.json contains a list of features that are included in Ambari and allows the stack to specify which versions of the stack include those features.  The list of features are determined by the particular Ambari release.  The reference list for a particular Ambari version should be found in the HDP/2.0.6/properties/stack_features.json in the branch for that Ambari release.  Each feature has a name and description and the stack can provide the minimum and maximum version where that feature is supported.

{

  "stack_features": [

    {

      "name": "snappy",

      "description": "Snappy compressor/decompressor support",

      "min_version": "2.0.0.0",

      "max_version": "2.2.0.0"

    },

    ...

}

The stack_tools.json includes the name and location where the stack_selector and conf_selector tools are installed.

{

  "stack_selector": ["hdp-select", "/usr/bin/hdp-select", "hdp-select"],

  "conf_selector": ["conf-select", "/usr/bin/conf-select", "conf-select"]

}

Structure

The structure of a Stack definition is as follows:

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