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https://issues.apache.org/jira/browse/HADOOP-19695?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ferenc Erdelyi updated HADOOP-19695:
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Description:
To support clients connecting to JHS via IPv6, we need to equip the YARN WebApp
class to bind to an IPv6 address. WebApp uses the HttpServer2, and adding the
IPv6 connector to this class makes the solution more elegant.
To enable dual-stack and IPv6 support, use InetAddress.getAllByName(hostname)
to resolve the IP addresses of a host.
When the system property java.net.preferIPv4Stack is set to true, only IPv4
addresses are returned, and any IPv6 addresses are ignored, so no extra check
is needed to exclude IPv6.
When java.net.preferIPv4Stack is false, both IPv4 and IPv6 addresses may be
returned, and any IPv6 addresses will also be added as connectors.
To disable IPv4, you need to configure the OS at the system level.
was:
To enable dualstack and IPv6 support, we use
InetAddress.getAllByName(hostname) to resolve the IP addresses of a host.
When the system property java.net.preferIPv4Stack is set to true, only IPv4
addresses are returned and any IPv6 addresses are ignored, so no extra check is
needed to exclude IPv6.
When java.net.preferIPv4Stack is false, both IPv4 and IPv6 addresses may be
returned, and any IPv6 addresses will also be added as connectors.
To disable IPv4, you need OS level configuration.
> Add dualstack/IPv6 Support to HttpServer2
> -----------------------------------------
>
> Key: HADOOP-19695
> URL: https://issues.apache.org/jira/browse/HADOOP-19695
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: hadoop-common
> Reporter: Ferenc Erdelyi
> Assignee: Ferenc Erdelyi
> Priority: Minor
>
> To support clients connecting to JHS via IPv6, we need to equip the YARN
> WebApp class to bind to an IPv6 address. WebApp uses the HttpServer2, and
> adding the IPv6 connector to this class makes the solution more elegant.
> To enable dual-stack and IPv6 support, use InetAddress.getAllByName(hostname)
> to resolve the IP addresses of a host.
> When the system property java.net.preferIPv4Stack is set to true, only IPv4
> addresses are returned, and any IPv6 addresses are ignored, so no extra check
> is needed to exclude IPv6.
> When java.net.preferIPv4Stack is false, both IPv4 and IPv6 addresses may be
> returned, and any IPv6 addresses will also be added as connectors.
> To disable IPv4, you need to configure the OS at the system level.
>
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