Josh Elser created HIVE-16973:
---------------------------------
Summary: Fetching of Delegation tokens (Kerberos) for
AccumuloStorageHandler fails in HS2
Key: HIVE-16973
URL: https://issues.apache.org/jira/browse/HIVE-16973
Project: Hive
Issue Type: Bug
Components: Accumulo Storage Handler
Reporter: Josh Elser
Assignee: Josh Elser
Had a report from a user that Kerberos+AccumuloStorageHandler+HS2 was broken.
Looking into it, it seems like the bit-rot got pretty bad. You'll see something
like the following:
{noformat}
Caused by: java.io.IOException: Failed to unwrap AuthenticationToken
at
org.apache.hadoop.hive.accumulo.HiveAccumuloHelper.unwrapAuthenticationToken(HiveAccumuloHelper.java:312)
at
org.apache.hadoop.hive.accumulo.mr.HiveAccumuloTableInputFormat.getSplits(HiveAccumuloTableInputFormat.java:122)
{noformat}
It appears that some of the code-paths changed since when I first did my
testing (or I just did poor testing) and the delegation token was never being
fetched/serialized. There also are some issues with fetching the delegation
token from Accumulo properly which were addressed in ACCUMULO-4665
I believe it would also be best to just update the dependency to use Accumulo
1.7 (drop 1.6 support) as it's lacking in this regard. These changes would
otherwise get much more complicated with reflection -- Accumulo has moved on
past 1.6, so let's do the same in Hive.
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