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## What changes were proposed in this pull request? `HadoopDelegationTokenProvider` has basically the same functionality just like `ServiceCredentialProvider` so the interfaces can be merged. `YARNHadoopDelegationTokenManager` now loads `ServiceCredentialProvider`s in one step. The drawback of this if one provider fails all others are not loaded. `HadoopDelegationTokenManager` loads `HadoopDelegationTokenProvider`s independently so it provides more robust behaviour. In this PR I've I've made the following changes: * Deleted `YARNHadoopDelegationTokenManager` and `ServiceCredentialProvider` * Made `HadoopDelegationTokenProvider` a `DeveloperApi` ## How was this patch tested? Existing unit tests. Closes #23686 from gaborgsomogyi/SPARK-26772. Authored-by: Gabor Somogyi <gabor.g.somogyi@gmail.com> Signed-off-by: Marcelo Vanzin <vanzin@cloudera.com> |
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