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Example

The following benchmarks were calculated using the sales_sample_bigquery.json config file (100M rows to be generated) and using the default Dataflow machine type(n1-standard-1)

Runtime: 25min
Workers used: 72 (there was a resource quota limitation, otherwise more would have been used)

BigQuery table

Create the BigQuery table in which we will store the generated data

bq mk \
    -t \
    --schema 'id:STRING,date:DATETIME,name:STRING,phone_number:STRING,product_id:STRING,country:STRING,amount:INTEGER,price:FLOAT,customer_satisfaction:FLOAT' \
    --time_partitioning_field date \
    --time_partitioning_type DAY \
    bigdata_sample.data-generator-test1

Generated data

data

Dataflow metrics

data

data

Field-level benchmark

Field Generation type Runtime (ms)
id UUID 26ms
date RANDOM_BETWEEN(2 dates) 103ms
name RANDOM_BETWEEN(string) 24ms
phone_number RANDOM_FROM_REGEX 299ms
product_id RANDOM_FROM_LIST 16ms
country RANDOM_FROM_LIST 7ms
amount RANDOM_BETWEEN(int) 4ms
price LOOKUP_VALUE 3ms
customer_satisfaction RANDOM_BETWEEN(float) 12ms