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VertexRDD.apply had a bug where it ignored the merge function for duplicate vertices and instead used whichever vertex attribute occurred first. This commit fixes the bug by passing the merge function through to ShippableVertexPartition.apply, which merges any duplicates using the merge function and then fills in missing vertices using the specified default vertex attribute. This commit also adds a unit test for VertexRDD.apply. Author: Larry Xiao <xiaodi@sjtu.edu.cn> Author: Blie Arkansol <xiaodi@sjtu.edu.cn> Author: Ankur Dave <ankurdave@gmail.com> Closes #1903 from larryxiao/2062 and squashes the following commits: 625aa9d [Blie Arkansol] Merge pull request #1 from ankurdave/SPARK-2062 476770b [Ankur Dave] ShippableVertexPartition.initFrom: Don't run mergeFunc on default values 614059f [Larry Xiao] doc update: note about the default null value vertices construction dfdb3c9 [Larry Xiao] minor fix 1c70366 [Larry Xiao] scalastyle check: wrap line, parameter list indent 4 spaces e4ca697 [Larry Xiao] [TEST] VertexRDD.apply mergeFunc 6a35ea8 [Larry Xiao] [TEST] VertexRDD.apply mergeFunc 4fbc29c [Blie Arkansol] undo unnecessary change efae765 [Larry Xiao] fix mistakes: should be able to call with or without mergeFunc b2422f9 [Larry Xiao] Merge branch '2062' of github.com:larryxiao/spark into 2062 52dc7f7 [Larry Xiao] pass mergeFunc to VertexPartitionBase, where merge is handled 581e9ee [Larry Xiao] TODO: VertexRDDSuite 20d80a3 [Larry Xiao] [SPARK-2062][GraphX] VertexRDD.apply does not use the mergeFunc |
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