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https://issues.apache.org/jira/browse/HADOOP-10433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13977803#comment-13977803
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Alejandro Abdelnur commented on HADOOP-10433:
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Andrew, thanks for the detailed review.
I'm working on a patch addressing most of your feedback, following some
questions/clarifications:
* KeyNotFoundException needing serialVersionUID, why do we need this? we are
not serializing these exceptions.
* The big log entries happen only on the first REST call only, a Jersey
initialization thing (fixed in newer Jerseys)
* Regarding using curl directly, the REST API is not meant to be public at the
moment, that is why it is not documented.
* Doing POJO<->JSON automatically requires the beans to have a public default
constructor and public getters/setters. Given the discussion in HADOOP-10431,
this is not an option.
* KMSClientProvider constants going private, all of them are used in the
KMSServer as well.
* KMSClientProvider.rollNewVersion() throwing a NoSuchAlgorithmException, yes
it can, it may be come as part of the remote exception in the error message.
> Key Management Server based on KeyProvider API
> ----------------------------------------------
>
> Key: HADOOP-10433
> URL: https://issues.apache.org/jira/browse/HADOOP-10433
> Project: Hadoop Common
> Issue Type: Improvement
> Components: security
> Affects Versions: 3.0.0
> Reporter: Alejandro Abdelnur
> Assignee: Alejandro Abdelnur
> Attachments: HADOOP-10433.patch, HADOOP-10433.patch, KMS-doc.pdf
>
>
> (from HDFS-6134 proposal)
> Hadoop KMS is the gateway, for Hadoop and Hadoop clients, to the underlying
> KMS. It provides an interface that works with existing Hadoop security
> components (authenticatication, confidentiality).
> Hadoop KMS will be implemented leveraging the work being done in HADOOP-10141
> and HADOOP-10177.
> Hadoop KMS will provide an additional implementation of the Hadoop
> KeyProvider class. This implementation will be a client-server implementation.
> The client-server protocol will be secure:
> * Kerberos HTTP SPNEGO (authentication)
> * HTTPS for transport (confidentiality and integrity)
> * Hadoop ACLs (authorization)
> The Hadoop KMS implementation will not provide additional ACL to access
> encrypted files. For sophisticated access control requirements, HDFS ACLs
> (HDFS-4685) should be used.
> Basic key administration will be supported by the Hadoop KMS via the, already
> available, Hadoop KeyShell command line tool
> There are minor changes that must be done in Hadoop KeyProvider functionality:
> The KeyProvider contract, and the existing implementations, must be
> thread-safe
> KeyProvider API should have an API to generate the key material internally
> JavaKeyStoreProvider should use, if present, a password provided via
> configuration
> KeyProvider Option and Metadata should include a label (for easier
> cross-referencing)
> To avoid overloading the underlying KeyProvider implementation, the Hadoop
> KMS will cache keys using a TTL policy.
> Scalability and High Availability of the Hadoop KMS can achieved by running
> multiple instances behind a VIP/Load-Balancer. For High Availability, the
> underlying KeyProvider implementation used by the Hadoop KMS must be High
> Available.
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