Re: [PR] [BLOG] tpchgen-rs: World’s fastest open source TPCH data generator, written in Rust [datafusion-site]

[via GitHub]

clflushopt commented on code in PR #67:
URL: https://github.com/apache/datafusion-site/pull/67#discussion_r2029904651


##########
content/blog/2025-04-10-fastest-tpch-generator.md:
##########
@@ -0,0 +1,614 @@
+---
+layout: post
+title: tpchgen-rs World’s fastest open source TPC-H data generator, written in 
Rust
+date: 2025-04-10
+author: Andrew Lamb, Achraf B, and Sean Smith
+categories: [performance]
+---
+
+<!--
+{% comment %}
+Licensed to the Apache Software Foundation (ASF) under one or more
+contributor license agreements.  See the NOTICE file distributed with
+this work for additional information regarding copyright ownership.
+The ASF licenses this file to you under the Apache License, Version 2.0
+(the "License"); you may not use this file except in compliance with
+the License.  You may obtain a copy of the License at
+http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+{% endcomment %}
+-->
+
+<style>
+/* Table borders */
+table, th, td {
+  border: 1px solid black;
+  border-collapse: collapse;
+}
+th, td {
+  padding: 3px;
+}
+</style>
+
+3 members of the [Apache DataFusion] community used Rust and open source
+development to build [tpchgen-rs], a fully open TPC-H data generator over 10x
+faster than any other implementation  we know of.
+
+It is now possible to create the TPC-H SF=100 dataset in 72.23 seconds (1.4 
GB/s
+😎) on a Macbook Air M3 with 16GB of memory, compared to the classic `dbgen`
+which takes 30 minutes<sup>1</sup> (0.05GB/sec). On the same machine, it takes 
less than
+2 minutes to create all 3.6 GB of SF=100 in [Apache Parquet] format.

Review Comment:
   ```
   ~/G/P/tpchgen-rs (cl/feat/bump-crates-to-0.1.1)> duckdb
   v1.2.0 5f5512b827
   Enter ".help" for usage hints.
   Connected to a transient in-memory database.
   Use ".open FILENAME" to reopen on a persistent database.
   D INSTALL tpch;
   D LOAD tpch;
   D
   D .open test
   D .timer on
   D CALL dbgen(sf = 100);
   
   -- Export each table to Parquet format
   copy customer to 'customer.parquet' (FORMAT parquet);
   copy lineitem to 'lineitem.parquet' (FORMAT parquet);
   copy nation to 'supplier.parquet' (FORMAT parquet);
   copy orders to 'supplier.parquet' (FORMAT parquet);
   copy part to 'part.parquet' (FORMAT parquet);
   copy partsupp to 'partsupp.parquet' (FORMAT parquet);
   copy region to 'region.parquet' (FORMAT parquet);
   copy supplier to 'supplier.parquet' (FORMAT parquet);
   
   100%▕████████████████████████████
   ┌─────────┐
     │ Success │
     │ boolean │
    ├─────────┤
     │ 0 rows  │
   └─────────┘
   Run Time (s): real 687.659 user 1040.134996 sys 83.434645
   D
   D -- Export each table to Parquet format
   D copy customer to 'customer.parquet' (FORMAT parquet);
   100%▕███████████████████████████
   Run Time (s): real 2.985 user 9.007536 sys 2.676405
   D copy lineitem to 'lineitem.parquet' (FORMAT parquet);
   100% ▕█████████████████████████████
   Run Time (s): real 108.328 user 395.075322 sys 90.606267
   D copy nation to 'supplier.parquet' (FORMAT parquet);
   Run Time (s): real 0.010 user 0.002566 sys 0.001946
   D copy orders to 'supplier.parquet' (FORMAT parquet);
   100%▕███████████████████████████████
   Run Time (s): real 19.461 user 78.310336 sys 17.984476
   D copy part to 'part.parquet' (FORMAT parquet);
   100%▕███████████████████████████████
   Run Time (s): real 10.717 user 13.437501 sys 37.076887
   D copy partsupp to 'partsupp.parquet' (FORMAT parquet);
   100%▕████████████████████████████████
   Run Time (s): real 11.286 user 31.645645 sys 14.751533
   D copy region to 'region.parquet' (FORMAT parquet);
   Run Time (s): real 0.003 user 0.000454 sys 0.000350
   D copy supplier to 'supplier.parquet' (FORMAT parquet);
   Run Time (s): real 0.500 user 0.613920 sys 0.130899
   ```



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