The BeakerX JupyterLab Kernel

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** Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement! **

** Things under legendu.net/outdated are outdated technologies that the author does not plan to update any more. Please look for better alternatives. **

BeakerX Cheatsheet

BeakerX dependencies Currently Java 8 is request.

1. The maven cache is save to the following directory /tmp/share/beakerx/maven/cache/.

2. Set JVM properties for BeakerX.

https://github.com/twosigma/beakerx/issues/7666

https://github.com/twosigma/beakerx/blob/master/FAQ.md

1. All BeakerX kernels support both Bash and Python via cell magics (%%bash and %%python).

2. Output of the BeakerX Scala kernel can be disabled by calling OutputCell.HIDDEN.

SQL

1. Connect to SQLite3.

   %defaultDatasource jdbc:sqlite:fts5.sqlite3
   

2. Connect to SQLite3 in memory

   %defaultDatasource jdbc:sqlite::memory:
   

   or %defaultDatasource jdbc:sqlite:

3. The SQLite3 JDBC driver is located at /usr/local/lib/python3.6/dist-packages/beakerx/kernel/sql/lib/sqlite-jdbc-3.21.0.jar. You can manually replace it with a higher version to upgrade it.

Default JDBC Connection

1. Add entry BEAKERX_SQL_DEFAULT_JDBC under env in the kernelspec file kernel.json.

2. Add necessary JARs to the -cp option of java if needed (e.g., for Teradata SQL).

"argv": [
    "java", "-cp", "/opt/conda/lib/python3.6/site-packages/beakerx/kernel/base/lib/*:/opt/conda/lib/python3.6/site-packages/beakerx/kernel/sql/lib/*", "com.twosigma.beakerx.sql.kernel.SQL",  "{connection_file}"
],
"display_name": "Postgres",
"language": "SQL",
"env": {
    "PS1": "Postgres",
    "BEAKERX_SQL_DEFAULT_JDBC": "jdbc:postgresql://some_url:port_number/database_name?user=username&password=password"
}

https://github.com/twosigma/beakerx/issues/7518

https://github.com/twosigma/beakerx/pull/7538

https://github.com/twosigma/beakerx/pull/7538#issuecomment-420765574

https://github.com/twosigma/beakerx/issues/8199