Github user yhuai commented on the pull request:
https://github.com/apache/spark/pull/8909#issuecomment-146294817
This is super nice! It will be great if we can manually test the following
cases to make sure Hive UDFs and SerDes added through user jars are good:
* a spark-shell with jars loaded through `--jars` option.
* a spark-shell with jars loaded through `add jar` command.
* a beeline client with jars loaded through `add jar` command.
* a cli client with jars loaded through `add jar` command.
* a cli client with jars loaded through `--jars` option.
Regarding commands to test, we can try commands that involve UDFs (register
a UDF and use it) and SerDes (define a table, write data to it and query it).
Also, can we put a diagram in the comment (maybe in a follow-up pr) to
explain relationship among HiveContext, ClientWrapper, and IsolatedLoader?
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