[ZEPPELIN-4443]. Unclear message when R is not installed

### What is this PR for?

This PR utilize ProcessLauncher to launch R process and capture the error output when it fails to launch R process.

### What type of PR is it?
[Improvement ]

### Todos
* [ ] - Task

### What is the Jira issue?
* https://issues.apache.org/jira/browse/ZEPPELIN-4443

### How should this be tested?
* Unit test is added

### Screenshots (if appropriate)

### Questions:
* Does the licenses files need update? No
* Is there breaking changes for older versions? No
* Does this needs documentation? No

Author: Jeff Zhang <zjffdu@apache.org>

Closes #3520 from zjffdu/ZEPPELIN-4443 and squashes the following commits:

79e51cfee [Jeff Zhang] [ZEPPELIN-4443]. Unclear message when R is not installed
4 files changed
tree: 7ffd4a7d7e6b94d40a6d1c26d8b150f90e8c3c73
  1. .github/
  2. _tools/
  3. alluxio/
  4. angular/
  5. beam/
  6. bigquery/
  7. bin/
  8. cassandra/
  9. conf/
  10. dev/
  11. docs/
  12. elasticsearch/
  13. file/
  14. flink/
  15. geode/
  16. groovy/
  17. hazelcastjet/
  18. hbase/
  19. helium-dev/
  20. ignite/
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  24. kotlin/
  25. ksql/
  26. kylin/
  27. lens/
  28. licenses/
  29. livy/
  30. markdown/
  31. neo4j/
  32. notebook/
  33. pig/
  34. python/
  35. r/
  36. sap/
  37. scalding/
  38. scio/
  39. scripts/
  40. shell/
  41. spark/
  42. sparql/
  43. submarine/
  44. testing/
  45. zeppelin-display/
  46. zeppelin-distribution/
  47. zeppelin-examples/
  48. zeppelin-integration/
  49. zeppelin-interpreter/
  50. zeppelin-interpreter-api/
  51. zeppelin-interpreter-integration/
  52. zeppelin-interpreter-parent/
  53. zeppelin-jupyter/
  54. zeppelin-plugins/
  55. zeppelin-server/
  56. zeppelin-web/
  57. zeppelin-zengine/
  58. .appveyor.yml
  59. .gitignore
  60. .travis.yml
  61. LICENSE
  62. NOTICE
  63. pom.xml
  64. README.md
  65. Roadmap.md
  66. SECURITY-README.md
  67. STYLE.md
  68. travis_check.py
README.md

Apache Zeppelin

Documentation: User Guide
Mailing Lists: User and Dev mailing list
Continuous Integration: Build Status
Contributing: Contribution Guide
Issue Tracker: Jira
License: Apache 2.0

Zeppelin, a web-based notebook that enables interactive data analytics. You can make beautiful data-driven, interactive and collaborative documents with SQL, Scala and more.

Core feature:

  • Web based notebook style editor.
  • Built-in Apache Spark support

To know more about Zeppelin, visit our web site https://zeppelin.apache.org

Getting Started

Install binary package

Please go to install to install Apache Zeppelin from binary package.

Build from source

Please check Build from source to build Zeppelin from source.