umehrot2 opened a new pull request #1394: [HUDI-656][Performance] Return a dummy Spark relation after writing the DataFrame URL: https://github.com/apache/incubator-hudi/pull/1394 ## What is the purpose of the pull request This PR fixes the performance issue mentioned in https://issues.apache.org/jira/browse/HUDI-656 by returning a dummy Spark relation after the write, instead of creating a Parquet data source relation. ## Brief change log - Update `DefaultSource.scala` to return a dummy relation after writing the data frame - Added a dummy relation `HudiEmptyRelation` ## Verify this pull request - Manual verification on EMR cluster ## Committer checklist - [ ] Has a corresponding JIRA in PR title & commit - [ ] Commit message is descriptive of the change - [ ] CI is green - [ ] Necessary doc changes done or have another open PR - [ ] For large changes, please consider breaking it into sub-tasks under an umbrella JIRA.
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