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Posted to issues@ozone.apache.org by "echonesis (via GitHub)" <gi...@apache.org> on 2026/07/18 05:18:48 UTC
[PR] HDDS-15772. Stop forcing java.net.preferIPv4Stack=true for Ozone daemons and tests [ozone]
echonesis opened a new pull request, #10801:
URL: https://github.com/apache/ozone/pull/10801
## What changes were proposed in this pull request?
Ozone currently forces `java.net.preferIPv4Stack=true` for daemon processes and Maven test executions.
This prevents the JVM from using its default networking behavior and blocks IPv6-capable or dual-stack environments unnecessarily.
- Removes the default `java.net.preferIPv4Stack=true` setting from Ozone shell bootstrap.
- Removes the corresponding global Surefire system property.
- Removes the legacy Linux `net.ipv6.bindv6only` check and the undocumented `OZONE_ALLOW_IPV6` developer override.
- Updates `ozone-env.sh` to document that Ozone follows the JVM's default IP stack preference while retaining instructions for operators who need to force IPv4.
- Adds Bats coverage verifying that shell bootstrap does not force IPv4 by default and preserves an explicitly configured IPv4 preference.
Operators can continue to force IPv4 when required by setting:
```shell
export OZONE_OPTS="-Djava.net.preferIPv4Stack=true"
```
Generated-by: Codex (GPT-5)
## What is the link to the Apache JIRA
https://issues.apache.org/jira/browse/HDDS-15772
## How was this patch tested?
GitHub Actions CI: https://github.com/echonesis/ozone/actions/runs/29590987895
<img width="600" height="178" alt="ζͺε 2026-07-18 δΈε1 18 02" src="https://github.com/user-attachments/assets/685bf808-d380-41ef-8406-0349723c317d" />
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Re: [PR] HDDS-15772. Stop forcing java.net.preferIPv4Stack=true [ozone]
Posted by "echonesis (via GitHub)" <gi...@apache.org>.
echonesis commented on PR #10801:
URL: https://github.com/apache/ozone/pull/10801#issuecomment-5018057059
Thanks @adoroszlai for the review and merge.
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Re: [PR] HDDS-15772. Stop forcing java.net.preferIPv4Stack=true [ozone]
Posted by "adoroszlai (via GitHub)" <gi...@apache.org>.
adoroszlai merged PR #10801:
URL: https://github.com/apache/ozone/pull/10801
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Re: [PR] HDDS-15772. Stop forcing java.net.preferIPv4Stack=true [ozone]
Posted by "adoroszlai (via GitHub)" <gi...@apache.org>.
adoroszlai commented on PR #10801:
URL: https://github.com/apache/ozone/pull/10801#issuecomment-5012641297
Thanks @echonesis for the patch.
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