[jira] [Commented] (HBASE-14865) Support passing multiple QOPs to SaslClient/Server via hbase.rpc.protection

["Mikhail Antonov (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-14865?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15595901#comment-15595901 ] 

Mikhail Antonov commented on HBASE-14865:
-----------------------------------------

So that puts an implicit assumption that 2.0 would only support Hadoop 2.7.0+, right? Just to confirm, based on the [~mbertozzi] above

> Support passing multiple QOPs to SaslClient/Server via hbase.rpc.protection
> ---------------------------------------------------------------------------
>
>                 Key: HBASE-14865
>                 URL: https://issues.apache.org/jira/browse/HBASE-14865
>             Project: HBase
>          Issue Type: Improvement
>          Components: security
>            Reporter: Appy
>            Assignee: Appy
>             Fix For: 2.0.0
>
>         Attachments: 14865-master-v7.patch, HBASE-14865-branch-1.2.patch, HBASE-14865-branch-1.patch, HBASE-14865-branch-1.patch, HBASE-14865-master-v2.patch, HBASE-14865-master-v3.patch, HBASE-14865-master-v4.patch, HBASE-14865-master-v5.patch, HBASE-14865-master-v6.patch, HBASE-14865-master-v7.patch, HBASE-14865-master.patch
>
>
> Currently, we can set the value of hbase.rpc.protection to one of authentication/integrity/privacy. It is the used to set {{javax.security.sasl.qop}} in SaslUtil.java.
> The problem is, if a cluster wants to switch from one qop to another, it'll have to take a downtime. Rolling upgrade will create a situation where some nodes have old value and some have new, which'll prevent any communication between them. There will be similar issue when clients will try to connect.
> {{javax.security.sasl.qop}} can take in a list of QOP in preferences order. So a transition from qop1 to qop2 can be easily done like this
> "qop1" --> "qop2,qop1" --> rolling restart --> "qop2" --> rolling restart
> Need to change hbase.rpc.protection to accept a list too.



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