srowen commented on a change in pull request #23856: [SPARK-26953][CORE][TEST]
Test TimSort for ArrayIndexOutOfBoundsException
URL: https://github.com/apache/spark/pull/23856#discussion_r259563540
##########
File path:
core/src/test/scala/org/apache/spark/util/collection/SorterSuite.scala
##########
@@ -74,6 +74,100 @@ class SorterSuite extends SparkFunSuite with Logging {
(0 to data.length - 2).foreach(i => assert(data(i) <= data(i + 1)))
}
+ test("java.lang.ArrayIndexOutOfBoundsException in TimSort") {
+ // scalastyle:off
+ val runLengths = Array(76405736, 74830360, 1181532, 787688, 1575376,
2363064, 3938440, 6301504,
+ 1181532, 393844, 15753760, 1575376, 787688, 393844, 1969220, 3150752,
1181532,787688, 5513816, 3938440,
+ 1181532, 787688, 1575376, 18116824, 1181532, 787688, 1575376, 2363064,
3938440,787688, 26781392, 1181532,
+ 787688, 1575376, 2363064, 393844, 4332284, 1181532, 787688, 1575376,
12209164,1181532, 787688, 1575376,
+ 2363064, 787688, 393844, 4726128, 1575376, 787688, 1969220, 76405758,
53168940,1181532, 787688, 1575376,
+ 2363064, 3938440, 1575376, 787688, 393844, 10633788, 1181532, 787688,
1575376,2363064, 4332284, 1181532,
+ 787688, 1575376, 12996852, 1181532, 787688, 1575376, 2363064, 393844,
17329136,1575376, 787688, 393844,
+ 1969220, 3150752, 1181532, 393844, 7483036, 1575376, 787688, 1969220,
2756908,1181532, 787600, 76405780,
+ 38202802, 114608494, 66, 44, 88, 176, 352, 704, 1408, 2816, 5632, 11264,
22528,45056, 90112, 180224,
+ 360448, 720896, 1441792, 2883584, 5767168, 11387222, 22495132, 319836,
213224,426448, 639672, 1066120,
+ 1705792, 426448, 213224, 106612, 4584316, 426448, 213224, 106612,
533060,106612, 852896, 426448, 213224,
+ 1599180, 1172732, 319836, 213224, 426448, 5223988, 319836, 213224,
426448,639672, 1066120, 319836, 213224,
+ 7782676, 426448, 213224, 533060, 746284, 213224, 1705792, 319836,
213224,426448, 639672, 2238852, 426448,
+ 213224, 106612, 2345464, 426448, 213224, 106612, 533060, 106612,
852896,426448, 213224, 106612, 22921602,
+ 15245516, 319836, 213224, 426448, 639672, 1172732, 319836, 213224,
426448,3304972, 319836, 213224, 426448,
+ 639672, 213224, 1279344, 426448, 213224, 533060, 3838032, 319836,
213224,426448, 639672, 213224, 106612,
+ 5330600, 319836, 213224, 426448, 639672, 1066120, 213224, 2345464,
426448,213224, 106612, 533060, 106612,
+ 852896, 426448, 213224, 106524, 22921624, 11460724, 34382260, 66, 44,
88, 176,352, 704, 1408, 2816, 5632,
+ 11264, 22528, 45056, 90112, 180224, 360448, 720896, 1001792, 1783584,
2649020,6739370, 102630, 68420,
+ 136840, 205260, 342100, 547360, 102630, 68420, 1436820, 102630, 68420,
136840,205260, 342100, 547360,
+ 102630, 68420, 136840, 205260, 68420, 34210, 1607870, 102630, 68420,
136840,205260, 342100, 68420, 34210,
+ 2428910, 102630, 68420, 136840, 205260, 34210, 410520, 102630, 68420,
136840,1094720, 102630, 68420,
+ 136840, 205260, 68420, 34210, 444730, 136840, 68420, 34210, 171050,
34210,6876232, 4618350, 102630, 68420,
+ 136840, 205260, 34210, 342100, 136840, 68420, 34210, 992090, 102630,
68420,136840, 205260, 68420, 342100,
+ 205260, 102630, 68420, 1163140, 102630, 68420, 136840, 205260, 68420,
1607870,102630, 68420, 136840,
+ 205260, 342100, 34210, 684200, 136840, 68420, 171050, 239470, 102630,
68332,6876254, 3438028, 10314194, 66,
+ 44, 88, 176, 352, 704, 1408, 2816, 5632, 11264, 22528, 45056, 90112,
180224,360448, 500896, 840554,
+ 2018720, 32736, 21824, 43648, 65472, 21824, 10912, 141856, 43648, 21824,
10912,54560, 10912, 425568, 43648,
+ 21824, 54560, 76384, 21824, 10912, 185504, 32736, 21824, 43648, 65472,
21824,10912, 491040, 32736, 21824,
+ 43648, 65472, 109120, 10912, 731104, 32736, 21824, 43648, 65472, 120032,
32736,21824, 43648, 327360, 32736,
+ 21824, 43648, 65472, 21824, 130944, 43648, 21824, 54560, 2062390,
1396736,32736, 21824, 43648, 65472,
+ 109120, 43648, 21824, 10912, 294624, 32736, 21824, 43648, 65472, 120032,
32736,21824, 43648, 360096, 32736,
+ 21824, 43648, 65472, 10912, 480128, 32736, 21824, 43648, 65472, 109120,
196416,65472, 32736, 10912, 76384,
+ 21824, 10824, 2062412, 1031118, 3093442, 66, 44, 88, 176, 352, 704,
1408, 2816,5632, 11264, 22528, 45056,
+ 90112, 180224, 258170, 605616, 9768, 6512, 13024, 19536, 6512, 3256,
42328,13024, 6512, 3256, 16280, 3256,
+ 126984, 13024, 6512, 16280, 22792, 6512, 3256, 55352, 9768, 6512, 13024,
19536,6512, 3256, 146520, 9768,
+ 6512, 13024, 19536, 32560, 3256, 218152, 9768, 6512, 13024, 19536,
35816, 9768,6512, 13024, 100936, 9768,
+ 6512, 13024, 19536, 6512, 3256, 39072, 13024, 6512, 16280, 618662,
416768,9768, 6512, 13024, 19536, 32560,
+ 13024, 6512, 3256, 87912, 9768, 6512, 13024, 19536, 35816, 9768, 6512,
13024,107448, 9768, 6512, 13024,
+ 19536, 3256, 143264, 13024, 6512, 3256, 16280, 26048, 9768, 3256, 61864,
13024,6512, 16280, 22792, 9768,
+ 3168, 618684, 309254, 927850, 66, 44, 88, 176, 352, 704, 1408, 2816,
5632,11264, 22440, 23056, 45056,
+ 72314, 181632, 2838, 1892, 3784, 5676, 9460, 15136, 2838, 946, 37840,
3784,1892, 946, 4730, 7568, 2838,
+ 1892, 13244, 9460, 2838, 1892, 3784, 43516, 2838, 1892, 3784, 5676,
9460, 1892,65274, 2838, 1892, 3784,
+ 5676, 946, 10406, 2838, 1892, 3784, 30272, 2838, 1892, 3784, 5676, 1892,
946,12298, 3784, 1892, 946, 4730,
+ 185438, 127710, 2838, 1892, 3784, 5676, 9460, 3784, 1892, 946, 26488,
2838,1892, 3784, 5676, 946, 10406,
+ 2838, 1892, 3784, 31218, 2838, 1892, 3784, 5676, 946, 42570, 2838, 1892,
3784,5676, 9460, 17974, 3784,
+ 1892, 4730, 6622, 2838, 1804, 185460, 92642, 278014, 66, 44, 88, 176,
352, 704,1408, 2816, 5632, 9064,
+ 11528, 23606, 54340, 858, 572, 1144, 1716, 2860, 4576, 858, 286, 11440,
1144,572, 286, 1430, 2288, 858,
+ 572, 4004, 2860, 858, 572, 1144, 13156, 858, 572, 1144, 1716, 2860, 572,
19448,858, 572, 1144, 1716, 286,
+ 3146, 858, 572, 1144, 8866, 858, 572, 1144, 1716, 572, 286, 3432, 1144,
572,1430, 55506, 38610, 858, 572,
+ 1144, 1716, 2860, 1144, 572, 286, 7722, 858, 572, 1144, 1716, 3146, 858,
572,1144, 9438, 858, 572, 1144,
+ 1716, 286, 12584, 1144, 572, 286, 1430, 2288, 858, 286, 5434, 1144, 572,
1430,2002, 858, 484, 55528, 27676,
+ 83116, 66, 44, 88, 176, 352, 704, 1408, 1716, 3872, 8118, 16192, 264,
176, 352,528, 176, 88, 1144, 352,
+ 176, 88, 440, 88, 3432, 352, 176, 440, 616, 176, 88, 1408, 264, 176,
352, 528,176, 88, 3960, 264, 176, 352,
+ 528, 880, 88, 5808, 264, 176, 352, 528, 968, 264, 176, 352, 2640, 264,
176,352, 528, 176, 1056, 352, 176,
+ 440, 16566, 11264, 264, 176, 352, 528, 880, 352, 176, 2376, 264, 176,
352, 528,968, 264, 176, 352, 2816,
+ 264, 176, 352, 528, 88, 3872, 264, 176, 352, 528, 880, 1584, 528, 264,
88, 616,176, 16588, 8206, 24706, 66,
+ 44, 88, 176, 352, 704, 1408, 2090, 4708, 66, 44, 88, 132, 220, 352, 66,
44, 88,990, 66, 44, 88, 132, 220,
+ 418, 88, 44, 110, 154, 66, 44, 1122, 66, 44, 88, 132, 220, 88, 44, 22,
1716,88, 44, 110, 154, 44, 352, 66,
+ 44, 88, 132, 44, 22, 462, 110, 44, 22, 528, 88, 44, 22, 110, 22, 176,
88, 44,22, 4950, 3256, 66, 44, 88,
+ 132, 22, 242, 66, 44, 88, 704, 66, 44, 88, 132, 44, 22, 264, 88, 44,
110, 814,88, 44, 110, 154, 22, 1144,
+ 66, 44, 88, 132, 220, 44, 22, 506, 88, 44, 22, 110, 22, 176, 88, 44, 22,
4972,2398, 7282, 66, 44, 88, 176,
+ 242, 418, 660, 1496, 66, 44, 88, 132, 242, 66, 44, 88, 682, 66, 44, 88,
132,44, 22, 264, 88, 44, 110, 1716,
+ 858, 88, 44, 110, 154, 44, 22, 352, 66, 44, 88, 132, 44, 22, 1738, 198,
1760,175, 156, 18, 17, 19, 36, 65,
+ 21, 20, 22, 18, 452, 114, 95, 18, 17, 21, 36, 18, 17, 115, 76, 144, 44,
38, 61,20, 19, 21, 17)
+ // scalastyle:on
+ val arrayToSortSize = 1091482190
+ val arrayToSort = new Array[Byte](arrayToSortSize)
+ var sum = -1
+ for (i <- runLengths) {
+ sum += i
+ arrayToSort(sum) = 1
+ }
+ val sorter = new Sorter(new ByteArraySortDataFormat())
+ sorter.sort(arrayToSort, 0, arrayToSort.length, Ordering.Byte)
+ // The sort must finish without ArrayIndexOutOfBoundsException
+ // The arrayToSort contains runLengths.length elements of 1, and others
are 0.
+ // Those 1 must be placed at the end of arrayToSort after sorting.
+ var i = 0
+ var (zeros, ones) = (0, 0)
+ while (i < arrayToSort.length) {
Review comment:
Why not just assert that everything up to `arrayToSort.length -
runLengths.length` == 0? and everything beyond == 1?
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