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https://issues.apache.org/jira/browse/HIVE-19276?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yuxiang Chen updated HIVE-19276:
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Status: Patch Available (was: Open)
> Metastore delegation tokens should return non-empty service field in
> delegation tokens
> --------------------------------------------------------------------------------------
>
> Key: HIVE-19276
> URL: https://issues.apache.org/jira/browse/HIVE-19276
> Project: Hive
> Issue Type: Task
> Components: Hive
> Reporter: Yuxiang Chen
> Assignee: Yuxiang Chen
> Priority: Major
> Attachments: HIVE-19276_hiveclient.patch,
> HIVE-19276_hivemetastore.patch
>
>
> Metastore does not set the token signature by default in the metastore
> (returns an empty string), and thus the service field, which is assigned to
> the value of token signature, would also be empty. This would cause problem
> that the clients cannot retrieve the right token from the token file, using
> this service field.
> Metastore delegation tokens currently return an empty string in the
> delegation token for the "service" field. The service field should be set to
> something that meaningfully identifies the metastore/cluster, so clients can
> find it in the token file.
> Meanwhile, we also want to change the code on hive metastore to use metastore
> uris as the service field when token signature is empty. However, to make the
> changes effective, we also need to do similar modifications on the client
> side, as we mentioned above.
> Thus to do this, we need to add the following logic:
> (1) On the client side, the client will first try to get token using the
> current service field, if it gets nothing, we fallback to use
> "hive.metastore.uris" as the service field and retry token selection.
> (2) On the metastore side, if the current token signature is not empty, we
> set the service field to be the value of token signature; otherwise, we use
> hive.metastore.uris as the service field.
> The patch is in attachments.
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