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From Kevin Risden <kris...@apache.org>
Subject HBase Thrift - HTTP - Kerberos & SPNEGO
Date Thu, 11 Jan 2018 14:31:50 GMT
I'm not 100% sure this should be posted to user list, but starting here
before dev list/JIRA.

I've been working on setting up the Hue HBase and it requires HBase Thrift
v1 server. To support impersonation/proxyuser, the documentation states
that this must be done with HTTP and not binary mode. The cluster has
Kerberos and so the final setup ends up being HBase Thrift in HTTP mode
with Kerberos.

While setting up the HBase Thrift server with HTTP, there were a
significant amount of 401 errors where the HBase Thrift wasn't able to
handle the incoming Kerberos request. Documentation online is sparse when
it comes to setting up the principal/keytab for HTTP Kerberos.

I noticed that the HBase Thrift HTTP implementation was missing SPNEGO
principal/keytab like other Thrift based servers (HiveServer2). It looks
like HiveServer2 Thrift implementation and HBase Thrift v1 implementation
were very close to the same at one point. I made the following changes to
HBase Thrift v1 server implementation to make it work:
* add SPNEGO principal/keytab if in HTTP mode
* return 401 immediately if no authorization header instead of waiting for
try/catch down in program flow

The code changes are available here:
https://github.com/risdenk/hortonworks-hbase-release/compare/HDP-2.5.3.126-base...fix_hbase_thrift_spnego

Does this seem like the right approach?

The same types of changes should apply to master as well. If this looks
reasonable, I can create a JIRA and generate patch against Apache HBase
master.

Side note: I saw the notes about HBase Thrift v1 was meant to go away at
some point but looks like it is still being depended on.

Kevin Risden

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