DynamoDB: ResourceNotFoundException When Creating Table (local) - node.js

Question

I am following the AWS Node.js tutorial, but I cannot get the provided code to work.
Specifically, I am trying to create a “Movies” table on a local instance of DynamoDB and load it with some provided sample data. However, I am receiving ”Cannot do operations on a non-existent table” when I try to create the table, which seems a bit strange.
For my set up, I am running DynamoDB in one console window. The command I am using and output is as follows:
COMPUTERNAME:node-dyna-demo myUserName$ java -Djava.library.path=./dynamodb_local_latest/DynamoDBLocal_lib -jar ./dynamodb_local_latest/DynamoDBLocal.jar -sharedDb
Initializing DynamoDB Local with the following configuration:
Port: 8000
InMemory: false
DbPath: null
SharedDb: true
shouldDelayTransientStatuses: false
CorsParams: *
In a separate console, I am executing the following code:
AWS.config.update({
credentials: {
accessKeyId: ‘testAccessId’,
secretAccessKey: ‘testAccessKey’
},
region: 'us-west-2',
endpoint: 'http://localhost:8000'
})
const dynamodb = new AWS.DynamoDB()
const docClient = new AWS.DynamoDB.DocumentClient()
const dbParams = {
TableName : "Movies",
KeySchema: [ … ],
AttributeDefinitions: [ … ],
ProvisionedThroughput: { … }
}
dynamodb.createTable(dbParams, function(err, data) {
if (err) {
console.error(
'Unable to create table. Error JSON:',
JSON.stringify(err, null, 2)
)
} else {
console.log(
'Created table. Table description JSON:',
JSON.stringify(data, null, 2)
)
}
})
The error I get from execution is:
Unable to create table. Error JSON: {
"message": "Cannot do operations on a non-existent table",
"code": "ResourceNotFoundException",
"time": "2018-01-24T15:56:13.229Z",
"requestId": "c8744331-dd19-4232-bab1-87d03027e7fc",
"statusCode": 400,
"retryable": false,
"retryDelay": 9.419252980728942
}
Does anyone know a possible cause for this exception?

Answer 1

When Dynamodb local is started without -sharedDb flag, there is a possibility for occurrence of this kind of issue.
In your case local dynamodb is started as expected,
java -Djava.library.path=./dynamodb_local_latest/DynamoDBLocal_lib -jar ./dynamodb_local_latest/DynamoDBLocal.jar -sharedDb
Try the following solutions,
Solution 1: Remove the credential info in in AWS config
AWS.config.update({
region: 'us-west-2',
endpoint: 'http://localhost:8000'
})
Reason: If in case dynamodb local is running without -sharedDb flag, it will create new database with respect to that credential.
Solution 2: Creating table using the dynamodb shell (http://localhost:8000/shell/#) and verify whether its created or not using the following command
aws dynamodb list-tables --endpoint-url http://localhost:8000

Answer 2

The first answer gave me a hint for my solution. I am using Java in combination with maven. Hopefully my answer can help others. The AWS region might be conflicting. The Java code points to eu-west-1.
amazonDynamoDB = AmazonDynamoDBClientBuilder
.standard()
.withEndpointConfiguration(
new AwsClientBuilder
.EndpointConfiguration("http://localhost:" +
LocalDbCreationRule.port, "eu-west-1"))
.build();
But my AWS config in my home folder on my local machine on location
~/.aws/config
showed the following:
[default]
region = eu-central-1
I changed the region to eu-west-1, matching the Java code, in my local config and the issue was resolved.