Neptune data plane bulk loader APIs

• StartLoaderJob (action)

• GetLoaderJobStatus (action)

• ListLoaderJobs (action)

• CancelLoaderJob (action)

• LoaderIdResult (structure)

• dependencies  (in the CLI: --dependencies) –  a String, of type: string (a UTF-8 encoded string).

  This is an optional parameter that can make a queued load request contingent on the successful completion of one or more previous jobs in the queue.

  Neptune can queue up as many as 64 load requests at a time, if their queueRequest parameters are set to "TRUE". The dependencies parameter lets you make execution of such a queued request dependent on the successful completion of one or more specified previous requests in the queue.

  For example, if load Job-A and Job-B are independent of each other, but load Job-C needs Job-A and Job-B to be finished before it begins, proceed as follows:

  1. Submit load-job-A and load-job-B one after another in any order, and save their load-ids.

  2. Submit load-job-C with the load-ids of the two jobs in its dependencies field:

    "dependencies" : ["(job_A_load_id)", "(job_B_load_id)"]

  Because of the dependencies parameter, the bulk loader will not start Job-C until Job-A and Job-B have completed successfully. If either one of them fails, Job-C will not be executed, and its status will be set to LOAD_FAILED_BECAUSE_DEPENDENCY_NOT_SATISFIED.

  You can set up multiple levels of dependency in this way, so that the failure of one job will cause all requests that are directly or indirectly dependent on it to be cancelled.

• failOnError  (in the CLI: --fail-on-error) –  a Boolean, of type: boolean (a Boolean (true or false) value).

  failOnError   –   A flag to toggle a complete stop on an error.

  Allowed values: "TRUE", "FALSE".

  Default value: "TRUE".

  When this parameter is set to "FALSE", the loader tries to load all the data in the location specified, skipping any entries with errors.

  When this parameter is set to "TRUE", the loader stops as soon as it encounters an error. Data loaded up to that point persists.

• format  (in the CLI: --format) –  Required: a Format, of type: string (a UTF-8 encoded string).

  The format of the data. For more information about data formats for the Neptune Loader command, see Load Data Formats.

  Allowed values

  • csv for the Gremlin CSV data format.

  • opencypher for the openCypher CSV data format.

  • ntriples for the N-Triples RDF data format.

  • nquads for the N-Quads RDF data format.

  • rdfxml for the RDF\XML RDF data format.

  • turtle for the Turtle RDF data format.

• iamRoleArn  (in the CLI: --iam-role-arn) –  Required: a String, of type: string (a UTF-8 encoded string).

  The Amazon Resource Name (ARN) for an IAM role to be assumed by the Neptune DB instance for access to the S3 bucket. The IAM role ARN provided here should be attached to the DB cluster (see Adding the IAM Role to an Amazon Neptune Cluster.

• mode  (in the CLI: --mode) –  a Mode, of type: string (a UTF-8 encoded string).

  The load job mode.

  Allowed values: RESUME, NEW, AUTO.

  Default value: AUTO.

  • RESUME   –   In RESUME mode, the loader looks for a previous load from this source, and if it finds one, resumes that load job. If no previous load job is found, the loader stops.

    The loader avoids reloading files that were successfully loaded in a previous job. It only tries to process failed files. If you dropped previously loaded data from your Neptune cluster, that data is not reloaded in this mode. If a previous load job loaded all files from the same source successfully, nothing is reloaded, and the loader returns success.

  • NEW   –   In NEW mode, the creates a new load request regardless of any previous loads. You can use this mode to reload all the data from a source after dropping previously loaded data from your Neptune cluster, or to load new data available at the same source.

  • AUTO   –   In AUTO mode, the loader looks for a previous load job from the same source, and if it finds one, resumes that job, just as in RESUME mode.

    If the loader doesn't find a previous load job from the same source, it loads all data from the source, just as in NEW mode.

• parallelism  (in the CLI: --parallelism) –  a Parallelism, of type: string (a UTF-8 encoded string).

  The optional parallelism parameter can be set to reduce the number of threads used by the bulk load process.

  Allowed values:

  • LOW –   The number of threads used is the number of available vCPUs divided by 8.

  • MEDIUM –   The number of threads used is the number of available vCPUs divided by 2.

  • HIGH –   The number of threads used is the same as the number of available vCPUs.

  • OVERSUBSCRIBE –   The number of threads used is the number of available vCPUs multiplied by 2. If this value is used, the bulk loader takes up all available resources.

    This does not mean, however, that the OVERSUBSCRIBE setting results in 100% CPU utilization. Because the load operation is I/O bound, the highest CPU utilization to expect is in the 60% to 70% range.

  Default value: HIGH

  The parallelism setting can sometimes result in a deadlock between threads when loading openCypher data. When this happens, Neptune returns the LOAD_DATA_DEADLOCK error. You can generally fix the issue by setting parallelism to a lower setting and retrying the load command.

• parserConfiguration  (in the CLI: --parser-configuration) –  It is a map array of key-value pairs where:

      Each key is a a String, of type: string (a UTF-8 encoded string).

      Each value is a a String, of type: string (a UTF-8 encoded string).

  parserConfiguration   –   An optional object with additional parser configuration values. Each of the child parameters is also optional:

  • namedGraphUri   –   The default graph for all RDF formats when no graph is specified (for non-quads formats and NQUAD entries with no graph).

    The default is http://www.amazonaws.cn/neptune/vocab/v01/DefaultNamedGraph.

  • baseUri   –   The base URI for RDF/XML and Turtle formats.

    The default is http://www.amazonaws.cn/neptune/default.

  • allowEmptyStrings   –   Gremlin users need to be able to pass empty string values("") as node and edge properties when loading CSV data. If allowEmptyStrings is set to false (the default), such empty strings are treated as nulls and are not loaded.

    If allowEmptyStrings is set to true, the loader treats empty strings as valid property values and loads them accordingly.

• queueRequest  (in the CLI: --queue-request) –  a Boolean, of type: boolean (a Boolean (true or false) value).

  This is an optional flag parameter that indicates whether the load request can be queued up or not.

  You don't have to wait for one load job to complete before issuing the next one, because Neptune can queue up as many as 64 jobs at a time, provided that their queueRequest parameters are all set to "TRUE". The queue order of the jobs will be first-in-first-out (FIFO).

  If the queueRequest parameter is omitted or set to "FALSE", the load request will fail if another load job is already running.

  Allowed values: "TRUE", "FALSE".

  Default value: "FALSE".

• s3BucketRegion  (in the CLI: --s-3-bucket-region) –  Required: a S3BucketRegion, of type: string (a UTF-8 encoded string).

  The Amazon region of the S3 bucket. This must match the Amazon Region of the DB cluster.

• source  (in the CLI: --source) –  Required: a String, of type: string (a UTF-8 encoded string).

  The source parameter accepts an S3 URI that identifies a single file, multiple files, a folder, or multiple folders. Neptune loads every data file in any folder that is specified.

  The URI can be in any of the following formats.

  • s3://(bucket_name)/(object-key-name)

  • https://s3.amazonaws.com/(bucket_name)/(object-key-name)

  • https://s3.us-east-1.amazonaws.com/(bucket_name)/(object-key-name)

  The object-key-name element of the URI is equivalent to the prefix parameter in an S3 ListObjects API call. It identifies all the objects in the specified S3 bucket whose names begin with that prefix. That can be a single file or folder, or multiple files and/or folders.

  The specified folder or folders can contain multiple vertex files and multiple edge files.

• updateSingleCardinalityProperties  (in the CLI: --update-single-cardinality-properties) –  a Boolean, of type: boolean (a Boolean (true or false) value).

  updateSingleCardinalityProperties is an optional parameter that controls how the bulk loader treats a new value for single-cardinality vertex or edge properties. This is not supported for loading openCypher data.

  Allowed values: "TRUE", "FALSE".

  Default value: "FALSE".

  By default, or when updateSingleCardinalityProperties is explicitly set to "FALSE", the loader treats a new value as an error, because it violates single cardinality.

  When updateSingleCardinalityProperties is set to "TRUE", on the other hand, the bulk loader replaces the existing value with the new one. If multiple edge or single-cardinality vertex property values are provided in the source file(s) being loaded, the final value at the end of the bulk load could be any one of those new values. The loader only guarantees that the existing value has been replaced by one of the new ones.

• userProvidedEdgeIds  (in the CLI: --user-provided-edge-ids) –  a Boolean, of type: boolean (a Boolean (true or false) value).

  This parameter is required only when loading openCypher data that contains relationship IDs. It must be included and set to True when openCypher relationship IDs are explicitly provided in the load data (recommended).

  When userProvidedEdgeIds is absent or set to True, an :ID column must be present in every relationship file in the load.

  When userProvidedEdgeIds is present and set to False, relationship files in the load must not contain an :ID column. Instead, the Neptune loader automatically generates an ID for each relationship.

  It's useful to provide relationship IDs explicitly so that the loader can resume loading after error in the CSV data have been fixed, without having to reload any relationships that have already been loaded. If relationship IDs have not been explicitly assigned, the loader cannot resume a failed load if any relationship file has had to be corrected, and must instead reload all the relationships.

• payload   – Required: It is a map array of key-value pairs where:

      Each key is a a String, of type: string (a UTF-8 encoded string).

      Each value is a a String, of type: string (a UTF-8 encoded string).

  Contains a loadId name-value pair that provides an identifier for the load operation.

• status   – Required: a String, of type: string (a UTF-8 encoded string).

  The HTTP return code indicating the status of the load job.

Errors

• BadRequestException

• InvalidParameterException

• BulkLoadIdNotFoundException

• ClientTimeoutException

• LoadUrlAccessDeniedException

• IllegalArgumentException

• TooManyRequestsException

• UnsupportedOperationException

• InternalFailureException

• S3Exception

• PreconditionsFailedException

• ConstraintViolationException

• InvalidArgumentException

• MissingParameterException

• details  (in the CLI: --details) –  a Boolean, of type: boolean (a Boolean (true or false) value).

  Flag indicating whether or not to include details beyond the overall status (TRUE or FALSE; the default is FALSE).

• errors  (in the CLI: --errors) –  a Boolean, of type: boolean (a Boolean (true or false) value).

  Flag indicating whether or not to include a list of errors encountered (TRUE or FALSE; the default is FALSE).

  The list of errors is paged. The page and errorsPerPage parameters allow you to page through all the errors.

• errorsPerPage  (in the CLI: --errors-per-page) –  a PositiveInteger, of type: integer (a signed 32-bit integer), at least 1 ?st?.

  The number of errors returned in each page (a positive integer; the default is 10). Only valid when the errors parameter set to TRUE.

• loadId  (in the CLI: --load-id) –  Required: a String, of type: string (a UTF-8 encoded string).

  The load ID of the load job to get the status of.

• page  (in the CLI: --page) –  a PositiveInteger, of type: integer (a signed 32-bit integer), at least 1 ?st?.

  The error page number (a positive integer; the default is 1). Only valid when the errors parameter is set to TRUE.

• payload   – Required: a Document, of type: document (a protocol-agnostic open content represented by a JSON-like data model).

  Status information about the load job, in a layout that could look like this:

  {
            "status" : "200 OK",
            "payload" : {
              "feedCount" : [
                {
                  "LOAD_FAILED" : (number)
                }
              ],
              "overallStatus" : {
                "fullUri" : "s3://(bucket)/(key)",
                "runNumber" : (number),
                "retryNumber" : (number),
                "status" : "(string)",
                "totalTimeSpent" : (number),
                "startTime" : (number),
                "totalRecords" : (number),
                "totalDuplicates" : (number),
                "parsingErrors" : (number),
                "datatypeMismatchErrors" : (number),
                "insertErrors" : (number),
              },
              "failedFeeds" : [
                {
                  "fullUri" : "s3://(bucket)/(key)",
                  "runNumber" : (number),
                  "retryNumber" : (number),
                  "status" : "(string)",
                  "totalTimeSpent" : (number),
                  "startTime" : (number),
                  "totalRecords" : (number),
                  "totalDuplicates" : (number),
                  "parsingErrors" : (number),
                  "datatypeMismatchErrors" : (number),
                  "insertErrors" : (number),
                }
              ],
              "errors" : {
                "startIndex" : (number),
                "endIndex" : (number),
                "loadId" : "(string),
                "errorLogs" : [ ]
              }
            }
          }

• status   – Required: a String, of type: string (a UTF-8 encoded string).

  The HTTP response code for the request.

Errors

• BadRequestException

• InvalidParameterException

• BulkLoadIdNotFoundException

• ClientTimeoutException

• LoadUrlAccessDeniedException

• IllegalArgumentException

• TooManyRequestsException

• UnsupportedOperationException

• InternalFailureException

• PreconditionsFailedException

• ConstraintViolationException

• InvalidArgumentException

• MissingParameterException

• includeQueuedLoads  (in the CLI: --include-queued-loads) –  a Boolean, of type: boolean (a Boolean (true or false) value).

  An optional parameter that can be used to exclude the load IDs of queued load requests when requesting a list of load IDs by setting the parameter to FALSE. The default value is TRUE.

• limit  (in the CLI: --limit) –  a ListLoaderJobsInputLimitInteger, of type: integer (a signed 32-bit integer), not less than 1 or more than 100 ?st?s.

  The number of load IDs to list. Must be a positive integer greater than zero and not more than 100 (which is the default).

• payload   – Required: A LoaderIdResult object.

  The requested list of job IDs.

• status   – Required: a String, of type: string (a UTF-8 encoded string).

  Returns the status of the job list request.

Errors

• UnsupportedOperationException

• BadRequestException

• InvalidParameterException

• BulkLoadIdNotFoundException

• InternalFailureException

• ClientTimeoutException

• PreconditionsFailedException

• ConstraintViolationException

• InvalidArgumentException

• LoadUrlAccessDeniedException

• IllegalArgumentException

• TooManyRequestsException

• loadId  (in the CLI: --load-id) –  Required: a String, of type: string (a UTF-8 encoded string).

  The ID of the load job to be deleted.

• status   – a String, of type: string (a UTF-8 encoded string).

  The cancellation status.

Errors

• BadRequestException

• InvalidParameterException

• BulkLoadIdNotFoundException

• ClientTimeoutException

• LoadUrlAccessDeniedException

• IllegalArgumentException

• TooManyRequestsException

• UnsupportedOperationException

• InternalFailureException

• PreconditionsFailedException

• ConstraintViolationException

• InvalidArgumentException

• MissingParameterException

Fields

• loadIds – This is a String, of type: string (a UTF-8 encoded string).

  A list of load IDs.