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Coalesced RDD , large scale
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OpenJDK 64-Bit Server VM 17.0.12+7-LTS on Linux 6.5.0-1025-azure
AMD EPYC 7763 64-Core Processor
Coalesced RDD:                                Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
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Coalesce Num Partitions: 100 Num Hosts: 1               126            145          24          0.8        1257.7       1.0X
Coalesce Num Partitions: 100 Num Hosts: 5               104            105           1          1.0        1039.8       1.2X
Coalesce Num Partitions: 100 Num Hosts: 10               87             89           2          1.1         873.7       1.4X
Coalesce Num Partitions: 100 Num Hosts: 20               89             90           1          1.1         893.4       1.4X
Coalesce Num Partitions: 100 Num Hosts: 40               88             91           6          1.1         880.4       1.4X
Coalesce Num Partitions: 100 Num Hosts: 80               88             94          10          1.1         875.9       1.4X
Coalesce Num Partitions: 500 Num Hosts: 1               308            314           8          0.3        3078.0       0.4X
Coalesce Num Partitions: 500 Num Hosts: 5               133            136           2          0.7        1334.6       0.9X
Coalesce Num Partitions: 500 Num Hosts: 10              112            114           4          0.9        1118.8       1.1X
Coalesce Num Partitions: 500 Num Hosts: 20              100            111          16          1.0        1004.0       1.3X
Coalesce Num Partitions: 500 Num Hosts: 40              100            106           6          1.0         999.7       1.3X
Coalesce Num Partitions: 500 Num Hosts: 80               95            100           6          1.0         954.0       1.3X
Coalesce Num Partitions: 1000 Num Hosts: 1              531            539          14          0.2        5311.0       0.2X
Coalesce Num Partitions: 1000 Num Hosts: 5              197            201           4          0.5        1970.3       0.6X
Coalesce Num Partitions: 1000 Num Hosts: 10             139            141           2          0.7        1392.4       0.9X
Coalesce Num Partitions: 1000 Num Hosts: 20             114            115           1          0.9        1137.9       1.1X
Coalesce Num Partitions: 1000 Num Hosts: 40             105            108           3          0.9        1054.9       1.2X
Coalesce Num Partitions: 1000 Num Hosts: 80             105            109           4          1.0        1047.4       1.2X
Coalesce Num Partitions: 5000 Num Hosts: 1             2336           2354          16          0.0       23362.8       0.1X
Coalesce Num Partitions: 5000 Num Hosts: 5              680            684           4          0.1        6798.7       0.2X
Coalesce Num Partitions: 5000 Num Hosts: 10             381            390           8          0.3        3810.5       0.3X
Coalesce Num Partitions: 5000 Num Hosts: 20             253            255           2          0.4        2529.6       0.5X
Coalesce Num Partitions: 5000 Num Hosts: 40             171            174           3          0.6        1706.1       0.7X
Coalesce Num Partitions: 5000 Num Hosts: 80             137            139           3          0.7        1365.5       0.9X
Coalesce Num Partitions: 10000 Num Hosts: 1            4220           4253          30          0.0       42203.4       0.0X
Coalesce Num Partitions: 10000 Num Hosts: 5            1377           1394          16          0.1       13769.0       0.1X
Coalesce Num Partitions: 10000 Num Hosts: 10            704            717          12          0.1        7036.4       0.2X
Coalesce Num Partitions: 10000 Num Hosts: 20            420            422           1          0.2        4201.7       0.3X
Coalesce Num Partitions: 10000 Num Hosts: 40            267            271           4          0.4        2669.3       0.5X
Coalesce Num Partitions: 10000 Num Hosts: 80            184            191           6          0.5        1842.2       0.7X


