PostgreSQL 13 Beta 2 release

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+PostgreSQL 13 Beta 2 Released
+=============================
+
+The PostgreSQL Global Development Group announces that the second beta release
+of PostgreSQL 13 is now [available for download](https://www.postgresql.org/download/).
+This release contains previews of all features that will be available in the
+final release of PostgreSQL 13, though some details of the release could change
+before then.
+
+You can find information about all of the features and changes found in
+PostgreSQL 13 in the [release notes](https://www.postgresql.org/docs/13/release-13.html):
+
+  [https://www.postgresql.org/docs/13/release-13.html](https://www.postgresql.org/docs/13/release-13.html)
+
+In the spirit of the open source PostgreSQL community, we strongly encourage you
+to test the new features of PostgreSQL 13 in your systems to help us eliminate
+any bugs or other issues that may exist. While we do not advise you to run
+PostgreSQL 13 Beta 2 in your production environments, we encourage you to find
+ways to run your typical application workloads against this beta release.
+
+You can read more about our [beta testing process](https://www.postgresql.org/developer/beta/)
+and how you can contribute here:
+
+  [https://www.postgresql.org/developer/beta/](https://www.postgresql.org/developer/beta/)
+
+Upgrading to PostgreSQL 13 Beta 2
+---------------------------------
+
+To upgrade to PostgreSQL 13 Beta 2 from Beta 1 or an earlier version of
+PostgreSQL, you will need to use a strategy similar to upgrading between
+major versions of PostgreSQL (e.g. `pg_upgrade` or `pg_dump` / `pg_restore`).
+For more information, please visit the documentation section on
+[upgrading](https://www.postgresql.org/docs/13/static/upgrading.html).
+
+Changes Since Beta 1
+--------------------
+
+There have been many bug fixes for PostgreSQL 13 reported during the Beta 1
+period and applied to the Beta 2 release. This includes:
+
+- The `effective_io_concurrency` configuration parameter is now simpler to use.
+To convert from the old value to the new value, you can use this formula:
+`SELECT round(sum(OLD / n::float)) from generate_series(1, OLD) s(n);`.
+- The `enable_hashagg_disk` configuration parameter is renamed to
+`hashagg_avoid_disk_plan` and defaults to `off`.
+- The `enable_groupingsets_hash_disk` configuration parameter has been removed.
+- `EXPLAIN ANALYZE` output for parallel query plans that have hash aggregates
+spill to disk now show max memory and disk usage per worker.
+- Several additional fixes and improvements for the hash aggregation spilling to
+disk feature.
+- Fix a crash in the WAL sender when starting physical replication.
+
+Please see the [release notes](https://www.postgresql.org/docs/13/release-13.html)
+for a complete list of new and changed features:
+
+  [https://www.postgresql.org/docs/13/release-13.html](https://www.postgresql.org/docs/13/release-13.html)
+
+Testing for Bugs & Compatibility
+--------------------------------
+
+The stability of each PostgreSQL release greatly depends on you, the community,
+to test the upcoming version with your workloads and testing tools in order to
+find bugs and regressions before the general availability of PostgreSQL 13. As
+this is a Beta, changes to database behaviors, feature details, and APIs are
+still possible. Your feedback and testing will help determine the final tweaks
+on the new features, so please test in the near future. The quality of user
+testing helps determine when we can make a final release.
+
+A list of [open issues](https://wiki.postgresql.org/wiki/PostgreSQL_13_Open_Items)
+is publicly available in the PostgreSQL wiki.  You can
+[report bugs](https://www.postgresql.org/account/submitbug/) using this form on
+the PostgreSQL website:
+
+  [https://www.postgresql.org/account/submitbug/](https://www.postgresql.org/account/submitbug/)
+
+Beta Schedule
+-------------
+
+This is the second beta release of version 13. The PostgreSQL Project will
+release additional betas as required for testing, followed by one or more
+release candidates, until the final release in late 2020. For further
+information please see the [Beta Testing](https://www.postgresql.org/developer/beta/) page.
+
+Links
+-----
+
+* [Download](https://www.postgresql.org/download/)
+* [Beta Testing Information](https://www.postgresql.org/developer/beta/)
+* [PostgreSQL 13 Beta Release Notes](https://www.postgresql.org/docs/13/release-13.html)
+* [PostgreSQL 13 Open Issues](https://wiki.postgresql.org/wiki/PostgreSQL_13_Open_Items)
+* [Submit a Bug](https://www.postgresql.org/account/submitbug/)
+* [Follow @postgresql on Twitter](https://twitter.com/postgresql)

diff --git a/releases/13/beta/13beta2.txt b/releases/13/beta/13beta2.txt
new file mode 100644 (file)
index 0000000..aecc2e8
--- /dev/null
+++ b/releases/13/beta/13beta2.txt
@@ -0,0 +1,95 @@
+PostgreSQL 13 Beta 2 Released
+=============================
+
+The PostgreSQL Global Development Group announces that the second beta release
+of PostgreSQL 13 is now available for download. This release contains previews
+of all features that will be available in the final release of PostgreSQL 13,
+though some details of the release could change before then.
+
+You can find information about all of the features and changes found in
+PostgreSQL 13 in the release notes:
+
+    https://www.postgresql.org/docs/13/release-13.html
+
+In the spirit of the open source PostgreSQL community, we strongly encourage you
+to test the new features of PostgreSQL 13 in your systems to help us eliminate
+any bugs or other issues that may exist. While we do not advise you to run
+PostgreSQL 13 Beta 2 in your production environments, we encourage you to find
+ways to run your typical application workloads against this beta release.
+
+You can read more about our beta testing process and how you can contribute
+here:
+
+    https://www.postgresql.org/developer/beta/
+
+Upgrading to PostgreSQL 13 Beta 2
+---------------------------------
+
+To upgrade to PostgreSQL 13 Beta 2 from Beta 1 or an earlier version of
+PostgreSQL, you will need to use a strategy similar to upgrading between major
+versions of PostgreSQL (e.g. `pg_upgrade` or `pg_dump` / `pg_restore`). For more
+information, please visit the documentation section on upgrading:
+
+    https://www.postgresql.org/docs/13/static/upgrading.html
+
+Changes Since Beta 1
+--------------------
+
+There have been many bug fixes for PostgreSQL 13 reported during the Beta 1
+period and applied to the Beta 2 release. This includes:
+
+- The `effective_io_concurrency` configuration parameter is now simpler to use.
+To convert from the old value to the new value, you can use this formula:
+`SELECT round(sum(OLD / n::float)) from generate_series(1, OLD) s(n);`.
+- The `enable_hashagg_disk` configuration parameter is renamed to
+`hashagg_avoid_disk_plan` and defaults to `off`.
+- The `enable_groupingsets_hash_disk` configuration parameter has been removed.
+- `EXPLAIN ANALYZE` output for parallel query plans that have hash aggregates
+spill to disk now show max memory and disk usage per worker.
+- Several additional fixes and improvements for the hash aggregation spilling
+to disk feature.
+- Fix a crash in the WAL sender when starting physical replication.
+
+Please see the release notes for a complete list of new and changed features:
+
+    https://www.postgresql.org/docs/13/release-13.html
+
+Testing for Bugs & Compatibility
+--------------------------------
+
+The stability of each PostgreSQL release greatly depends on you, the
+community, to test the upcoming version with your workloads and testing tools
+in order to find bugs and regressions before the general availability of
+PostgreSQL 13. As this is a Beta, changes to database behaviors, feature
+details, and APIs are still possible. Your feedback and testing will help
+determine the final tweaks on the new features, so please test in the near
+future. The quality of user testing helps determine when we can make a final
+release.
+
+A list of open issues is publicly available in the PostgreSQL wiki:
+
+    https://wiki.postgresql.org/wiki/PostgreSQL_13_Open_Items
+
+You can report bugs using this form on the PostgreSQL website:
+
+    https://www.postgresql.org/account/submitbug/
+
+Beta Schedule
+-------------
+
+This is the second beta release of version 13. The PostgreSQL Project will
+release additional betas as required for testing, followed by one or more
+release candidates, until the final release in late 2020. For further
+information please see the Beta Testing page:
+
+    https://www.postgresql.org/developer/beta/
+
+Links
+-----
+
+* Download: https://www.postgresql.org/download/
+* Beta Testing Information: https://www.postgresql.org/developer/beta/
+* PostgreSQL 13 Beta Release Notes: https://www.postgresql.org/docs/13/release-13.html
+* PostgreSQL 13 Open Issues: https://wiki.postgresql.org/wiki/PostgreSQL_13_Open_Items
+* Submit a Bug: https://www.postgresql.org/account/submitbug/
+* Follow @postgresql on Twitter: https://twitter.com/postgresql