Does SegmentCount=N create N coroutines?

[jivanmukti]

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!