clearbit / go-ddb Goto Github PK

thanks for providing this useful module. We have created an updated version (go modules support, aws sdk v2, some configuration enhancements) to fit our use cases. Are you interested in a pull-request?

Hi I wanted to verify that SegmentCount=N creates 150 routines.

scanner := ddb.NewScanner(ddb.Config{
    TableName:     "ddb-table-name",
    TotalSegments: 150,   // calculate value: (table size GB / 2GB)
    SegmentOffset: 0, // optional param for controlling offset
    SegmentCount:  150, // optional param for controlling how many routines get created
})

I used the following AWS CLI command trying to utilize the parallel scan function but didn't realize that it would only return the results of the 1 partition.

aws dynamodb scan --table-name LargeTable --region us-east-1 --total-segments 150 --segment 0 --query "Items[*].[category1.N,category2.N,category3.N]" --output text

Does scanner go through all of the partitions?

Thank you!

When scanning big tables a checkpoint can be used to store the last position of the scan.

• store the last sequence number back to dynamo checkpoint table
• update Reamde with instructions