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nixos/hadoop: release notes

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illustris 2021-11-03 22:59:17 +05:30
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23
nixos/doc/manual/from_md/release-notes/rl-2111.section.xml
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@ -50,6 +50,29 @@
guide</link> is available.
</para>
</listitem>
<listitem>
<para>
Improvements have been made to the Hadoop module and package:
</para>
<itemizedlist spacing="compact">
<listitem>
<para>
HDFS and YARN now support production-ready highly
available deployments with automatic failover.
</para>
</listitem>
<listitem>
<para>
Hadoop now defaults to Hadoop 3, updated from 2.
</para>
</listitem>
<listitem>
<para>
JournalNode, ZKFS and HTTPFS services have been added.
</para>
</listitem>
</itemizedlist>
</listitem>
<listitem>
<para>
Activation scripts can now opt int to be run when running

5
nixos/doc/manual/release-notes/rl-2111.section.md
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@ -18,6 +18,11 @@ In addition to numerous new and upgraded packages, this release has the followin
- spark now defaults to spark 3, updated from 2. A [migration guide](https://spark.apache.org/docs/latest/core-migration-guide.html#upgrading-from-core-24-to-30) is available.
- Improvements have been made to the Hadoop module and package:
- HDFS and YARN now support production-ready highly available deployments with automatic failover.
- Hadoop now defaults to Hadoop 3, updated from 2.
- JournalNode, ZKFS and HTTPFS services have been added.
- Activation scripts can now opt int to be run when running `nixos-rebuild dry-activate` and detect the dry activation by reading `$NIXOS_ACTION`.
This allows activation scripts to output what they would change if the activation was really run.
The users/modules activation script supports this and outputs some of is actions.