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amazon-archives / dynamodb-janusgraph-storage-backend

The Amazon DynamoDB Storage Backend for JanusGraph
Apache License 2.0
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Hashkey has exceeded the maximum size limit of2048 bytes #296

Closed shihgianlee closed 6 years ago

shihgianlee commented 6 years ago

Hello,

We are migrating from Titan (HBase backend) to JanusGraph (Dynamodb backend). We exported all the vertices and edges and reimport them into JanusGraph.

We encountered the following error message when creating vertices via JanusGraph:

20:18:22.644 [getDelegate-8] DEBUG com.amazonaws.request - Received error response: com.amazonaws.services.dynamodbv2.model.AmazonDynamoDBException: One or more parameter values were invalid: Size of hashkey has exceeded the maximum size limit of2048 bytes (Service: AmazonDynamoDBv2; Status Code: 400; Error Code: ValidationException; Request ID: 2V6NEF7K3OSBEA83D8K1QV0I2VVV4KQNSO5AEMVJF66Q9ASUAAJG)

We have opened a case ticket with AWS team - ID5423092821.

Thanks, Lee

shihgianlee commented 6 years ago

This is resolved.

amcp commented 6 years ago

This was probably due to an indexed property exceeding the maximum allowable size of the hash key (2048 bytes). Please limit the size of your indexed properties to less than 2048 bytes. Due to the encoding used and the data type you are indexing, you may need to use some trial and error to find the actual upper bound

shihgianlee commented 6 years ago

That is exactly what we did. We removed the indexed property that exceeded the limitation and resolved the problem. Thanks for your reply.