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_r259582717
##########
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:
Really, I'm surprised. It seems like it would do less work. My guess is that
all the calls to assert and branching slow it down.
Speed is important, and 30 secs is even nontrivial.
What about avoiding the "+ 1" and asserting that the sum of the zeroes is 0?
This could also simply be two loops, from 0 to `arrayToSort.length -
runLengths.length` and from there to the end. It would avoid an extra
comparison on each iteration.
It won't matter much but might be worth saving a few seconds on the test.
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
With regards,
Apache Git Services
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
