[SPARK-25299] Introduce the new shuffle writer API (#5) #520
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Introduces the new Shuffle Writer API (Shuffle Writes [1/6])
yifeih
approved these changes
Mar 20, 2019
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BypassMergeSortShuffleWriter write
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Java HotSpot(TM) 64-Bit Server VM 1.8.0_131-b11 on Linux 4.15.0-1014-gcp
Intel(R) Xeon(R) CPU @ 2.30GHz
BypassMergeSortShuffleWrite without spill: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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small dataset without disk spill 2 3 2 0.5 1975.5 1.0X
Java HotSpot(TM) 64-Bit Server VM 1.8.0_131-b11 on Linux 4.15.0-1014-gcp
Intel(R) Xeon(R) CPU @ 2.30GHz
BypassMergeSortShuffleWrite with spill: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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without transferTo 7587 7662 142 0.9 1130.5 1.0X
with transferTo 7557 7633 74 0.9 1126.1 1.0X
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SortShuffleWriter writer
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Java HotSpot(TM) 64-Bit Server VM 1.8.0_131-b11 on Linux 4.15.0-1014-gcp
Intel(R) Xeon(R) CPU @ 2.30GHz
SortShuffleWriter without spills: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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small dataset without spills 10 17 7 0.1 9899.3 1.0X
Java HotSpot(TM) 64-Bit Server VM 1.8.0_131-b11 on Linux 4.15.0-1014-gcp
Intel(R) Xeon(R) CPU @ 2.30GHz
SortShuffleWriter with spills: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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no map side combine 14391 14574 169 0.5 2144.4 1.0X
with map side aggregation 14419 14514 111 0.5 2148.7 1.0X
with map side sort 14454 14540 118 0.5 2153.7 1.0X
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UnsafeShuffleWriter write
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Java HotSpot(TM) 64-Bit Server VM 1.8.0_131-b11 on Linux 4.15.0-1014-gcp
Intel(R) Xeon(R) CPU @ 2.30GHz
UnsafeShuffleWriter without spills: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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small dataset without spills 22 26 4 0.0 21801.0 1.0X
Java HotSpot(TM) 64-Bit Server VM 1.8.0_131-b11 on Linux 4.15.0-1014-gcp
Intel(R) Xeon(R) CPU @ 2.30GHz
UnsafeShuffleWriter with spills: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
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without transferTo 16377 16469 97 0.8 1220.2 1.0X
with transferTo 16424 16507 81 0.8 1223.7 1.0X
mccheah
added a commit
that referenced
this pull request
Jun 27, 2019
Introduces the new Shuffle Writer API. Ported from bloomberg#5.
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Introduces the new Shuffle Writer API. Ported from bloomberg#5.