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https://issues.apache.org/jira/browse/HADOOP-14443?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Santhosh G Nayak updated HADOOP-14443:
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Status: Patch Available (was: Open)
> Azure: Add retry and client side failover for authorization, SASKey
> generation and delegation token generation requests to remote service
> -----------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-14443
> URL: https://issues.apache.org/jira/browse/HADOOP-14443
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs/azure
> Affects Versions: 2.9.0
> Reporter: Santhosh G Nayak
> Assignee: Santhosh G Nayak
> Fix For: 2.9.0, 3.0.0-alpha3
>
> Attachments: HADOOP-14443.1.patch, HADOOP-14443.2.patch
>
>
> Currently, {{WasRemoteCallHelper}} can be configured to talk to only one URL
> for authorization, SASKey generation and delegation token generation. If for
> some reason the service is down, all the requests will fail.
> So proposal is to,
> - Add support to configure multiple URLs, so that if communication to one URL
> fails, client can retry on another instance of the service running on
> different node for authorization, SASKey generation and delegation token
> generation.
> - Rename the configurations {{fs.azure.authorization.remote.service.url}} to
> {{fs.azure.authorization.remote.service.urls}} and
> {{fs.azure.cred.service.url}} to {{fs.azure.cred.service.urls}} to support
> the comma separated list of URLs.
> Introduce a new configuration {{fs.azure.delegation.token.service.urls}} to
> configure the comma separated list of service URLs to get the delegation
> token.
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