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SPARK-2685
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SPARK-2048
Update ExternalAppendOnlyMap to avoid buffer.remove()
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Matei Alexandru Zaharia
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Matei Alexandru Zaharia
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Resolved |
Fixed
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SPARK-2684
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SPARK-2048
Update ExternalAppendOnlyMap to take an iterator as input
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Matei Alexandru Zaharia
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Matei Alexandru Zaharia
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Resolved |
Fixed
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SPARK-2657
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SPARK-2048
Use more compact data structures than ArrayBuffer in groupBy and cogroup
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Matei Alexandru Zaharia
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Matei Alexandru Zaharia
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Resolved |
Fixed
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SPARK-2574
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SPARK-2048
Avoid allocating new ArrayBuffer in groupByKey's mergeCombiner
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Matei Alexandru Zaharia
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Sandy Ryza
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Resolved |
Fixed
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SPARK-2553
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SPARK-2048
CoGroupedRDD unnecessarily allocates a Tuple2 per dep per key
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Sandy Ryza
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Sandy Ryza
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Resolved |
Fixed
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SPARK-2519
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SPARK-2048
Eliminate pattern-matching on Tuple2 in performance-critical aggregation code
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Sandy Ryza
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Sandy Ryza
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Resolved |
Fixed
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