johnyangk opened a new pull request #93: [NEMO-160] Handle Beam VoidCoder properly URL: https://github.com/apache/incubator-nemo/pull/93 JIRA: [NEMO-160: Handle Beam VoidCoder properly](https://issues.apache.org/jira/projects/NEMO/issues/NEMO-160) **Major changes:** - Proper support for (1) empty, or (2) 'null'-value input in DataFetchers - Allow 'null' values emitted by user code (e.g., Create.of((Void) null) by Beam WriteFiles) to be passed around in the data plane - Remove specific assumptions about Beam VoidCoder in the data plane (e.g., Void.TYPE), and use the coder transparently just like we use any other coders - DataFetcher throws a NoSuchElementException instead of returning 'null', when indicating that all data has been fetched **Minor changes to note:** - Cleans up tests **Tests for the changes:** - ParentTaskDataFetcherTest#testEmpty, testNull **Other comments:** - N/A resolves [NEMO-160](https://issues.apache.org/jira/projects/NEMO/issues/NEMO-160)
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