CODEWITHSUNDEEP
amazon-web-servicesapache-sparkamazon-dynamodbamazon-emramazon-dynamodb-dax
Akshay
Akshay

Reputation: 75

AWS DAX cluster has zero cache hits and cache miss

I'm using an AWS DAX cluster of 3 nodes of dax.r4.xlarge node type. When I'm running my spark application from EMR cluster, it is always fetching values from dynamodb table. Even if I run the same application on same set of key, it is querying dynamodb table. In the DAX cluster metrics I see 0 cache hits and misses.

Upvotes: 0

Views: 958

Answers (1)

Akshay
Akshay

Reputation: 75

I found the mistake. Initially I was hitting DynamoDB directly and was using consistent reads by defining get item input parameter as: ConsistentRead: aws.Bool(true) When I switched to DAX client, I did not remove it. Hence it was always redirecting all the requests to Dynamodb table to keep the reads consistent. Removing this worked. I can see cache hits and misses in DAX metrics now.

Upvotes: 3

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