Gremlin query status API - Amazon Neptune

Gremlin query status API

To get the status of Gremlin queries, use HTTP GET or POST to make a request to the https://your-neptune-endpoint:port/gremlin/status endpoint.

Gremlin query status request parameters

  • queryId (optional)   –   The ID of a running Gremlin query. Only displays the status of the specified query.

  • includeWaiting (optional)   –   Returns the status of all waiting queries.

    Normally, only running queries are included in the response, but when the includeWaiting parameter is specified, the status of all waiting queries is also returned.

Gremlin query status response syntax

{ "acceptedQueryCount": integer, "runningQueryCount": integer, "queries": [ { "queryId":"guid", "queryEvalStats": { "waited": integer, "elapsed": integer, "cancelled": boolean }, "queryString": "string" } ] }

Gremlin query status response values

  • acceptedQueryCount   –   The number of queries that have been accepted but not yet completed, including queries in the queue.

  • runningQueryCount   –   The number of currently running Gremlin queries.

  • queries   –   A list of the current Gremlin queries.

  • queryId   –   A GUID id for the query. Neptune automatically assigns this ID value to each query, or you can also assign your own ID (see Inject a Custom ID Into a Neptune Gremlin or SPARQL Query).

  • queryEvalStats   –   Statistics for this query.

  • subqueries   –   The number of subqueries in this query.

  • elapsed   –   The number of milliseconds the query has been running so far.

  • cancelled   –   True indicates that the query was cancelled.

  • queryString   –   The submitted query. This is truncated to 1024 characters if it is longer than that.

  • waited   –   Indicates how long the query waited, in microseconds.

Gremlin query status example

The following is an example of the status command using curl and HTTP GET.

curl https://your-neptune-endpoint:port/gremlin/status

This output shows a single running query.

{ "acceptedQueryCount":9, "runningQueryCount":1, "queries": [ { "queryId":"fb34cd3e-f37c-4d12-9cf2-03bb741bf54f", "queryEvalStats": { "waited": 0, "elapsed": 23, "cancelled": false }, "queryString": "g.V().addV()" } ] }