How can insert/update (upsert) data into Neptune opencypher?

Question

I have loaded few nodes into Neptune using following code in databricks

nep_client.start_loader_job(
        source='s3://bucket/Test.csv',
        format='opencypher',
        s3BucketRegion='us-east-1',
        iamRoleArn='arn:aws:iam::12345678:role/NeptuneLoadFromS3' ,
        mode='AUTO',
        failOnError=False,
        parallelism='MEDIUM',
        queueRequest=True
    )

Now I added a new property in Test.csv nodes and i want to load the data in upsert way. i.e., If the node ID already exists it should update the existing properties, otherwise insert the data into Neptune.

I need to know the possible ways to perform upsert into neptune using python/pyspark or any other way.

Mohammed_RK · Answer

Hello,

According to this stackoverflow, it is possible to do this via the Loader command:
https://stackoverflow.com/questions/63425245/can-we-update-the-property-of-existing-nodes-and-edges-of-a-graph-in-aws-neptune

However, this is only works in the case where properties are of single cardinality.

Please refer to the following documentation for more information on this:
https://docs.aws.amazon.com/neptune/latest/userguide/bulk-load-tutorial-format-gremlin.html

How can insert/update (upsert) data into Neptune opencypher?

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