[GitHub] wonook opened a new pull request #56: [NEMO-16] Implement collection of data from executor to client

[GitBox <gi...@apache.org>]

wonook opened a new pull request #56: [NEMO-16] Implement collection of data from executor to client
URL: https://github.com/apache/incubator-nemo/pull/56
 
 
   JIRA: [NEMO-16: Implement collection of data from executor to client](https://issues.apache.org/jira/projects/NEMO/issues/NEMO-16)
   
   **Major changes:**
   - Gets rid of the file-writing and reading during the `collect` action of Spark. Instead, it brings the data from the executor through the driver, and then back to the client using the RPC implemented with [NEMO-103] (#45).
   
   **Minor changes to note:**
   - I've separated the MR Spark integration tests into a separate file, as the SparkJava integration tests file has been becoming too large and crowded.
   - A number of typos have been fixed
   
   **Tests for the changes:**
   - I've created a test for the `ContextImpl`, which had no unit tests before.
   
   **Other comments:**
   - N/A
   
   resolves [NEMO-16](https://issues.apache.org/jira/projects/NEMO/issues/NEMO-16)
   

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