alamb commented on a change in pull request #140:
URL: https://github.com/apache/arrow-site/pull/140#discussion_r691348829
##########
File path: _posts/2021-08-18-ballista-0.5.0.md
##########
@@ -0,0 +1,75 @@
+---
+layout: post
+title: Apache Arrow Ballista 0.5.0 Release
+date: "2021-08-18 00:00:00"
+author: pmc
+categories: [release]
+---
+<!--
+{% 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 %}
+-->
+
+Ballista extends DataFusion to provide support for distributed queries. This
is the first release of Ballista since
+the project was
[donated](https://arrow.apache.org/blog/2021/04/12/ballista-donation/) to the
Apache Arrow project
+and includes 80 commits from 11 contributors.
+
+```
+git shortlog -sn 4.0.0..5.0.0 ballista/rust/client ballista/rust/core
ballista/rust/executor ballista/rust/scheduler
+ 27 Andy Grove
+ 15 Jiayu Liu
+ 12 Andrew Lamb
+ 8 Ximo Guanter
+ 6 Daniël Heres
+ 5 QP Hou
+ 2 Jorge Leitao
+ 1 Javier Goday
+ 1 K.I. (Dennis) Jung
+ 1 Mike Seddon
+ 1 sathis
+```
+
+<!--
+$ git log --pretty=oneline 4.0.0..5.0.0 ballista/rust/client
ballista/rust/core ballista/rust/executor ballista/rust/scheduler
ballista-examples/ | wc -l
+80
+-->
+
+The release notes below are not exhaustive and only expose selected highlights
of the release. Many other bug fixes
+and improvements have been made: we refer you to the complete changelog.
Review comment:
```suggestion
and improvements have been made: we refer you to the [complete
changelog](https://github.com/apache/arrow-datafusion/blob/5.0.0/ballista/CHANGELOG.md).
```
##########
File path: _posts/2021-08-18-datafusion-5.0.0.md
##########
@@ -0,0 +1,107 @@
+---
+layout: post
+title: Apache Arrow DataFusion 5.0.0 Release
+date: "2021-08-18 00:00:00"
+author: pmc
+categories: [release]
+---
+<!--
+{% 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 %}
+-->
+
+The Apache Arrow team is pleased to announce the DataFusion 5.0.0 release.
This covers 4 months of development work
+and includes 211 commits from the following 31 distinct contributors.
+
+```
+$ git shortlog -sn 4.0.0..5.0.0 datafusion datafusion-cli datafusion-examples
+ 61 Jiayu Liu
+ 47 Andrew Lamb
+ 27 Daniël Heres
+ 13 QP Hou
+ 13 Andy Grove
+ 4 Javier Goday
+ 4 sathis
+ 3 Ruan Pearce-Authers
+ 3 Raphael Taylor-Davies
+ 3 Jorge Leitao
+ 3 Cui Wenzheng
+ 3 Mike Seddon
+ 3 Edd Robinson
+ 2 思维
+ 2 Liang-Chi Hsieh
+ 2 Michael Lu
+ 2 Parth Sarthy
+ 2 Patrick More
+ 2 Rich
+ 1 Charlie Evans
+ 1 Gang Liao
+ 1 Agata Naomichi
+ 1 Ritchie Vink
+ 1 Evan Chan
+ 1 Ruihang Xia
+ 1 Todd Treece
+ 1 Yichen Wang
+ 1 baishen
+ 1 Nga Tran
+ 1 rdettai
+ 1 Marco Neumann
+```
+
+<!--
+$ git log --pretty=oneline 4.0.0..5.0.0 datafusion datafusion-cli
datafusion-examples | wc -l
+ 211
+-->
+
+The release notes below are not exhaustive and only expose selected highlights
of the release. Many other bug fixes
+and improvements have been made: we refer you to the complete
+[changelog](https://github.com/apache/arrow-datafusion/blob/master/datafusion/CHANGELOG.md).
+
+# Performance
+
+There have been numerous performance improvements in this release. The
following chart shows the relative
+performance of individual TPC-H queries compared to the previous release.
+
+<i>TPC-H @ scale factor 100, in parquet format. Concurrency 24.</i>
+
+<img src="{{ site.baseurl }}/img/2021-08-18-datafusion500perf.png" />
+
+We also extended support for more TPC-H queries: q7, q8, q9 and q13 are
running successfully in DataFusion 5.0.
+
+# New Features
Review comment:
This is a good list for a release :bowtie:
##########
File path: _posts/2021-08-18-ballista-0.5.0.md
##########
@@ -0,0 +1,75 @@
+---
+layout: post
+title: Apache Arrow Ballista 0.5.0 Release
+date: "2021-08-18 00:00:00"
+author: pmc
+categories: [release]
+---
+<!--
+{% 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 %}
+-->
+
+Ballista extends DataFusion to provide support for distributed queries. This
is the first release of Ballista since
+the project was
[donated](https://arrow.apache.org/blog/2021/04/12/ballista-donation/) to the
Apache Arrow project
+and includes 80 commits from 11 contributors.
+
+```
+git shortlog -sn 4.0.0..5.0.0 ballista/rust/client ballista/rust/core
ballista/rust/executor ballista/rust/scheduler
+ 27 Andy Grove
+ 15 Jiayu Liu
+ 12 Andrew Lamb
+ 8 Ximo Guanter
+ 6 Daniël Heres
+ 5 QP Hou
+ 2 Jorge Leitao
+ 1 Javier Goday
+ 1 K.I. (Dennis) Jung
+ 1 Mike Seddon
+ 1 sathis
+```
+
+<!--
+$ git log --pretty=oneline 4.0.0..5.0.0 ballista/rust/client
ballista/rust/core ballista/rust/executor ballista/rust/scheduler
ballista-examples/ | wc -l
+80
+-->
+
+The release notes below are not exhaustive and only expose selected highlights
of the release. Many other bug fixes
+and improvements have been made: we refer you to the complete changelog.
+
+# Performance and Scalability
+
+Ballista is now capable of running complex SQL queries at scale and supports
scalable distributed joins. We have been
+benchmarking using individual queries from the TPC-H benchmark at scale
factors up to 1000 (1 TB). When running against
+CSV files, performance is generally very close to DataFusion, and
significantly faster in some cases due to the fact
+that the scheduler limits the number of concurrent tasks that run at any given
time. Performance against large Parquet
+datasets is currently poor due to some issues
([#867](https://github.com/apache/arrow-datafusion/issues/867),
Review comment:
```suggestion
datasets is currently non ideal due to some issues
([#867](https://github.com/apache/arrow-datafusion/issues/867),
```
##########
File path: _posts/2021-08-18-datafusion-5.0.0.md
##########
@@ -0,0 +1,107 @@
+---
+layout: post
+title: Apache Arrow DataFusion 5.0.0 Release
+date: "2021-08-18 00:00:00"
+author: pmc
+categories: [release]
+---
+<!--
+{% 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 %}
+-->
+
+The Apache Arrow team is pleased to announce the DataFusion 5.0.0 release.
This covers 4 months of development work
+and includes 211 commits from the following 31 distinct contributors.
+
+```
+$ git shortlog -sn 4.0.0..5.0.0 datafusion datafusion-cli datafusion-examples
+ 61 Jiayu Liu
+ 47 Andrew Lamb
+ 27 Daniël Heres
+ 13 QP Hou
+ 13 Andy Grove
+ 4 Javier Goday
+ 4 sathis
+ 3 Ruan Pearce-Authers
+ 3 Raphael Taylor-Davies
+ 3 Jorge Leitao
+ 3 Cui Wenzheng
+ 3 Mike Seddon
+ 3 Edd Robinson
+ 2 思维
+ 2 Liang-Chi Hsieh
+ 2 Michael Lu
+ 2 Parth Sarthy
+ 2 Patrick More
+ 2 Rich
+ 1 Charlie Evans
+ 1 Gang Liao
+ 1 Agata Naomichi
+ 1 Ritchie Vink
+ 1 Evan Chan
+ 1 Ruihang Xia
+ 1 Todd Treece
+ 1 Yichen Wang
+ 1 baishen
+ 1 Nga Tran
+ 1 rdettai
+ 1 Marco Neumann
+```
+
+<!--
+$ git log --pretty=oneline 4.0.0..5.0.0 datafusion datafusion-cli
datafusion-examples | wc -l
+ 211
+-->
+
+The release notes below are not exhaustive and only expose selected highlights
of the release. Many other bug fixes
+and improvements have been made: we refer you to the complete
+[changelog](https://github.com/apache/arrow-datafusion/blob/master/datafusion/CHANGELOG.md).
Review comment:
```suggestion
[changelog](https://github.com/apache/arrow-datafusion/blob/5.0.0/datafusion/CHANGELOG.md).
```
Might make sense to pin to the 5.0.0 tag release so it doesn't get stale
when we do another release
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