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https://issues.apache.org/jira/browse/HDDS-15772?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Attila Doroszlai updated HDDS-15772:
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Summary: Stop forcing java.net.preferIPv4Stack=true (was: Stop forcing
java.net.preferIPv4Stack=true for Ozone daemons and tests)
> Stop forcing java.net.preferIPv4Stack=true
> ------------------------------------------
>
> Key: HDDS-15772
> URL: https://issues.apache.org/jira/browse/HDDS-15772
> Project: Apache Ozone
> Issue Type: Task
> Reporter: Siyao Meng
> Assignee: Chia-Chuan Ho
> Priority: Major
> Labels: pull-request-available
>
> Ozone starts every daemon with IPv4-only networking and runs all tests the
> same way, so an IPv6-only host cannot start Ozone at all and no test ever
> exercises IPv6.
> - hadoop-ozone/dist/src/shell/ozone/ozone-functions.sh:639 sets OZONE_OPTS to
> default "-Djava.net.preferIPv4Stack=true".
> - pom.xml:2385 sets <java.net.preferIPv4Stack>true</java.net.preferIPv4Stack>
> for Surefire.
> - hadoop-hdds/common/src/main/conf/ozone-env.sh:89-91 documents "We do not
> support IPv6 yet/still".
> Proposed:
> - Make the JVM stack preference configurable rather than hardcoded, and
> default to dual-stack (do not force preferIPv4Stack).
> - Remove the forced IPv4 stack from the Surefire configuration, or gate it so
> IPv6 test profiles can override it.
> - Update the ozone-env.sh comment once support lands.
> This is a prerequisite for any other IPv6 work to be testable or deployable.
> Parent epic: HDDS-15763.
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