Jaehwa Jung created ZEPPELIN-45:
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Summary: Integrate Tajo with Zeppelin
Key: ZEPPELIN-45
URL: https://issues.apache.org/jira/browse/ZEPPELIN-45
Project: Zeppelin
Issue Type: Improvement
Components: Interpreters
Reporter: Jaehwa Jung
Hi folks,
Currently, there is a pull request to integrate Tajo with Zeppelin as follows.
https://github.com/NFLabs/zeppelin/pull/245
I also need Zeppelin to enable interactive data analysis on Tajo. But above
patch had last CI build error and no progress has been made for the five
months. So, I implemented new patch with Tajo JDBC driver. For the referece,
existing patch had been implemented with TajoCli which is a
CLI(Command-Line-Interface) class.
Here is my suggestion.
I implemented the patch with Tajo JDBC driver. I think it would be better than
TajoCli due to the following reasons:
Light dependency: TajoCli needs more library compare than Tajo JDBC driver.
Especially, it needs hadoop libraries like hadoop-common, hadoop-hdfs,
hadoop-mapreduce-client-core. Also it depends on trevni and parquet. Tajo JDBC
doesn’t depend on any file system or file format.
Easy maintenence: In existing patch, Zeppelin should call the execute method of
TajoClient. But if TajoClient method specification changes, it would cause some
problems on Zeppelin. Thus, Zeppelin need to watch up Tajo change note. But
JDBC specification will not change easily in the future. Also JDBC interface
already had been implemented at HiveInterprerter of Zeppelin. I think most
contributors would be familar with JDBC compare than TajoCli and its codes
would more simple. I wish it more efficient for code maintenence.
I’ve already implemented this. Please look at my private github repository
(https://github.com/blrunner/incubator-zeppelin/tree/tajo). For the reference,
Not yet added test cases. If you guys agree with my suggestion, I’ll create a
PR.
Honestly, I borrowed HiveInterprerter of Zeppelin and I could implemet this
quickly by HiveInterpeter. :-)
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