Github user parente commented on the issue:
https://github.com/apache/spark/pull/16482
> please check the yarn container's local cache:
Without this fix, when I specify `--principal user@REALM` and `--keytab
/some/path/user.keytab`, I see the following in my app staging directory on
HDFS:
```
Found 7 items
-rw-r--r-- 3 user supergroup 68 2017-01-06 03:59 user.keytab
-rw-r--r-- 3 user supergroup 73502 2017-01-06 03:59
__spark_conf__.zip
-rw-r--r-- 3 user supergroup 189767340 2017-01-06 03:59
__spark_libs__4440821503780683972.zip
-rw-r--r-- 3 user supergroup 91275 2017-01-06 03:59
py4j-0.10.3-src.zip
-rw-r--r-- 3 user supergroup 440385 2017-01-06 03:59 pyspark.zip
```
Notice that the keytab has not been properly suffixed during the remote
copy. It's not clear to me at all how the file in your example receives the
suffix when the call to `copyFileToRemote` in `Client.distribute` does not pass
the destination name at all. The other calls to `copyFileToRemote` to copy the
spark conf and libs do indeed pass `destName` to rename to the underscored
versions we see above.
> Also please see the comment in HiveClientImple, it've already mentioned
the problem you met.
Thanks for the pointer about this aspect. The linked JIRA issue describes
the HiveClientImpl problem, but also notes that Kerberos ticket renewal is not
occurring properly either in the first comment. I can open a separate JIRA
issue explicitly about the keytab naming problem and lack of re-ticketing and
separate out the two issues.
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