---++  GET /api/entities/summary/:entity-type
   * <a href="#Description">Description</a>
   * <a href="#Parameters">Parameters</a>
   * <a href="#Results">Results</a>
   * <a href="#Examples">Examples</a>

---++ Description
Given an EntityType and cluster, get list of entities along with summary of N recent instances of each entity

---++ Parameters
   * :entity-type Valid options are feed or process.
   * cluster Show entities that belong to this cluster.
   * start <optional param> Show entity summaries from this date. Date format is yyyy-MM-dd'T'HH:mm'Z'.
      * By default, it is set to (end - 2 days).
   * end <optional param> Show entity summary up to this date. Date format is yyyy-MM-dd'T'HH:mm'Z'.
      * Default is set to now.
   * fields <optional param> Fields of entity that the user wants to view, separated by commas.
      * Valid options are STATUS, TAGS, PIPELINES.
   * filterBy <optional param> Filter results by list of field:value pairs. Example: filterBy=STATUS:RUNNING,PIPELINES:clickLogs
      * Supported filter fields are NAME, STATUS, PIPELINES, CLUSTER.
      * Query will do an AND among filterBy fields.
   * tags <optional param> Return list of entities that have specified tags, separated by a comma. Query will do AND on tag values.
      * Example: tags=consumer=consumer@xyz.com,owner=producer@xyz.com
   * orderBy <optional param> Field by which results should be ordered.
      * Supports ordering by "name".
   * sortOrder <optional param> Valid options are "asc" and "desc"
   * offset <optional param> Show results from the offset, used for pagination. Defaults to 0.
   * numResults <optional param> Number of results to show per request, used for pagination. Only integers > 0 are valid, Default is 10.
   * numInstances <optional param> Number of recent instances to show per entity. Only integers > 0 are valid, Default is 7.

---++ Results
Show entities along with summary of N instances for each entity.

---++ Examples
---+++ Rest Call
<verbatim>
GET http://localhost:15000/api/entities/summary/feed?cluster=primary-cluster&filterBy=STATUS:RUNNING&fields=status&tags=consumer=consumer@xyz.com&orderBy=name&offset=0&numResults=1&numInstances=2
</verbatim>
---+++ Result
<verbatim>
{
    "entitySummary": [
        {
            "name"  : "SampleOutput",
            "type"  : "feed",
            "status": "RUNNING",
            "instances": [
            {
                "details": "",
                "endTime": "2013-10-21T14:40:26-07:00",
                "startTime": "2013-10-21T14:39:56-07:00",
                "cluster": "primary-cluster",
                "logFile": "http:\/\/localhost:11000\/oozie?job=0000070-131021115933395-oozie-rgau-W",
                "status": "RUNNING",
                "instance": "2012-04-03T07:00Z"
            },
            {
                "details": "",
                "endTime": "2013-10-21T14:42:27-07:00",
                "startTime": "2013-10-21T14:41:57-07:00",
                "cluster": "primary-cluster",
                "logFile": "http:\/\/localhost:11000\/oozie?job=0000070-131021115933397-oozie-rgau-W",
                "status": "RUNNING",
                "instance": "2012-04-03T08:00Z"
            },
            ]
        }
    ]
    "requestId": "default\/e15bb378-d09f-4911-9df2-5334a45153d2\n",
    "message": "default\/STATUS\n",
    "status": "SUCCEEDED"
}
</verbatim>