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https://issues.apache.org/jira/browse/HBASE-23312?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16981930#comment-16981930
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Kevin Risden commented on HBASE-23312:
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It looks like HBASE-21652 is the difference between 2.2 and 2.1 branches. I
should be able to move just these changes into a 2.1 version. Let me open a new
PR.
> HBase Thrift SPNEGO configs (HBASE-19852) should be backwards compatible
> ------------------------------------------------------------------------
>
> Key: HBASE-23312
> URL: https://issues.apache.org/jira/browse/HBASE-23312
> Project: HBase
> Issue Type: Bug
> Components: Thrift
> Affects Versions: 3.0.0, 2.1.1, 2.1.2, 2.1.3, 2.1.4, 2.1.5, 2.1.6, 2.1.7
> Reporter: Kevin Risden
> Assignee: Kevin Risden
> Priority: Major
> Fix For: 3.0.0, 2.3.0, 2.2.3
>
> Attachments: HBASE-23312.master.001.patch
>
>
> HBASE-19852 is not backwards compatible since it now requires the SPNEGO
> thrift configs. I haven't seen anything in Apache HBase about changing this
> so that the older configs still work with a merged keytab. (fall back to the
> non SPNEGO specific principal/keytab configs)
> I wrote the original patch in HBASE-19852 and with hindsight being 20/20, I
> think this section of could be extended to fall back to not requiring the
> additional configs.
> https://github.com/apache/hbase/blame/master/hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift/ThriftHttpServlet.java#L78
> Supporting the older configs allows upgrade from HBase 1.x to 2.x without
> needing to change the configs ahead of time. I'll make sure to log a
> deprecation warning if the older configs are used.
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