java.lang.IllegalArgumentException: 0 > -2147483648

JIRA | Earl Hathaway | 3 years ago
  1. 0

    update: this reliably repros; can't finish a 50 tree drf run build 1176, 1 node data is airlines: b[1,4]:~earl/newairlines/fixed_years/201* ignored columns = last 9 after selecting Y plus ArrTime exception and context below drf run: 03:07:39.615 # Session INFO WATER: Using existing cached Frame conversion (2011.csv.hex.autoframe). 03:07:39.616 FJ-9-81 INFO WATER: Starting DRF model build... 03:07:39.617 FJ-9-81 INFO WATER: destination_key: DRF_bbf29ee89411ade83fdc9e29e4bb4791 03:07:39.618 FJ-9-81 INFO WATER: source.numCols(): 31 03:07:39.619 FJ-9-81 INFO WATER: source.numRows(): 22372536 03:07:39.619 FJ-9-81 INFO WATER: cols: 20 columns selected 03:07:39.620 FJ-9-81 INFO WATER: ignored_cols: 10 columns ignored 03:07:39.620 FJ-9-81 INFO WATER: response: IsArrDelayed 03:07:39.621 FJ-9-81 INFO WATER: classification 03:07:39.622 FJ-9-81 INFO WATER: validation: null 03:07:39.622 FJ-9-81 INFO WATER: ntrees: 50 03:07:39.623 FJ-9-81 INFO WATER: max_depth: 999 03:07:39.624 FJ-9-81 INFO WATER: min_rows: 1 03:07:39.624 FJ-9-81 INFO WATER: nbins: 20 03:07:39.625 FJ-9-81 INFO WATER: mtry: -1 03:07:39.626 FJ-9-81 INFO WATER: sample_rate: 0.6666667 03:07:39.626 FJ-9-81 INFO WATER: seed: 1378637265992042252 exception: 04:07:36.231 FJ-9-81 INFO DRF__: Mean Squared Error is 0.026344221397063477, with 42x2 trees (average of 2465104.0 nodes) 04:07:36.232 FJ-9-81 INFO DRF__: Total of 519282 errors on 22372528 rows, CM= [[13415662, 207222], [312060, 8437584]] 04:07:38.021 FJ-9-81 ERRR WATER: + java.lang.IllegalArgumentException: 0 > -2147483648 + at java.util.Arrays.copyOfRange(Arrays.java:3064) + at water.MemoryManager.malloc(MemoryManager.java:235) + at water.MemoryManager.arrayCopyOfRange(MemoryManager.java:260) + at water.AutoBuffer.sendPartial(AutoBuffer.java:497) + at water.AutoBuffer.putA1(AutoBuffer.java:1022) + at water.AutoBuffer.putA1(AutoBuffer.java:1016) + at water.AutoBuffer.putA1(AutoBuffer.java:1014) + at hex.gbm.DTree$TreeModel$CompressedTree.write(DTree.java) + at water.AutoBuffer.put(AutoBuffer.java:600) + at water.AutoBuffer.putA(AutoBuffer.java:656) + at water.AutoBuffer.putAA(AutoBuffer.java:665) + at hex.gbm.DTree$TreeModel.write(DTree.java) + at hex.drf.DRF$DRFModel.write(DRF.java) + at water.Value.<init>(Value.java:349) + at water.Value.<init>(Value.java:344) + at water.DKV.put(DKV.java:29) + at water.DKV.put(DKV.java:27) + at hex.gbm.SharedTreeModelBuilder.doScoring(SharedTreeModelBuilder.java:196) + at hex.drf.DRF.buildModel(DRF.java:166) + at hex.gbm.SharedTreeModelBuilder.buildModel(SharedTreeModelBuilder.java:162) + at hex.drf.DRF.exec(DRF.java:123) + at water.Job$4.compute2(Job.java:492) + at water.H2O$H2OCountedCompleter.compute(H2O.java:677) + at jsr166y.CountedCompleter.exec(CountedCompleter.java:429) + at jsr166y.ForkJoinTask.doExec(ForkJoinTask.java:263) + at jsr166y.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:974) + at jsr166y.ForkJoinPool.runWorker(ForkJoinPool.java:1477) + at jsr166y.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:104)

    JIRA | 3 years ago | Earl Hathaway
    java.lang.IllegalArgumentException: 0 > -2147483648
  2. 0

    update: this reliably repros; can't finish a 50 tree drf run build 1176, 1 node data is airlines: b[1,4]:~earl/newairlines/fixed_years/201* ignored columns = last 9 after selecting Y plus ArrTime exception and context below drf run: 03:07:39.615 # Session INFO WATER: Using existing cached Frame conversion (2011.csv.hex.autoframe). 03:07:39.616 FJ-9-81 INFO WATER: Starting DRF model build... 03:07:39.617 FJ-9-81 INFO WATER: destination_key: DRF_bbf29ee89411ade83fdc9e29e4bb4791 03:07:39.618 FJ-9-81 INFO WATER: source.numCols(): 31 03:07:39.619 FJ-9-81 INFO WATER: source.numRows(): 22372536 03:07:39.619 FJ-9-81 INFO WATER: cols: 20 columns selected 03:07:39.620 FJ-9-81 INFO WATER: ignored_cols: 10 columns ignored 03:07:39.620 FJ-9-81 INFO WATER: response: IsArrDelayed 03:07:39.621 FJ-9-81 INFO WATER: classification 03:07:39.622 FJ-9-81 INFO WATER: validation: null 03:07:39.622 FJ-9-81 INFO WATER: ntrees: 50 03:07:39.623 FJ-9-81 INFO WATER: max_depth: 999 03:07:39.624 FJ-9-81 INFO WATER: min_rows: 1 03:07:39.624 FJ-9-81 INFO WATER: nbins: 20 03:07:39.625 FJ-9-81 INFO WATER: mtry: -1 03:07:39.626 FJ-9-81 INFO WATER: sample_rate: 0.6666667 03:07:39.626 FJ-9-81 INFO WATER: seed: 1378637265992042252 exception: 04:07:36.231 FJ-9-81 INFO DRF__: Mean Squared Error is 0.026344221397063477, with 42x2 trees (average of 2465104.0 nodes) 04:07:36.232 FJ-9-81 INFO DRF__: Total of 519282 errors on 22372528 rows, CM= [[13415662, 207222], [312060, 8437584]] 04:07:38.021 FJ-9-81 ERRR WATER: + java.lang.IllegalArgumentException: 0 > -2147483648 + at java.util.Arrays.copyOfRange(Arrays.java:3064) + at water.MemoryManager.malloc(MemoryManager.java:235) + at water.MemoryManager.arrayCopyOfRange(MemoryManager.java:260) + at water.AutoBuffer.sendPartial(AutoBuffer.java:497) + at water.AutoBuffer.putA1(AutoBuffer.java:1022) + at water.AutoBuffer.putA1(AutoBuffer.java:1016) + at water.AutoBuffer.putA1(AutoBuffer.java:1014) + at hex.gbm.DTree$TreeModel$CompressedTree.write(DTree.java) + at water.AutoBuffer.put(AutoBuffer.java:600) + at water.AutoBuffer.putA(AutoBuffer.java:656) + at water.AutoBuffer.putAA(AutoBuffer.java:665) + at hex.gbm.DTree$TreeModel.write(DTree.java) + at hex.drf.DRF$DRFModel.write(DRF.java) + at water.Value.<init>(Value.java:349) + at water.Value.<init>(Value.java:344) + at water.DKV.put(DKV.java:29) + at water.DKV.put(DKV.java:27) + at hex.gbm.SharedTreeModelBuilder.doScoring(SharedTreeModelBuilder.java:196) + at hex.drf.DRF.buildModel(DRF.java:166) + at hex.gbm.SharedTreeModelBuilder.buildModel(SharedTreeModelBuilder.java:162) + at hex.drf.DRF.exec(DRF.java:123) + at water.Job$4.compute2(Job.java:492) + at water.H2O$H2OCountedCompleter.compute(H2O.java:677) + at jsr166y.CountedCompleter.exec(CountedCompleter.java:429) + at jsr166y.ForkJoinTask.doExec(ForkJoinTask.java:263) + at jsr166y.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:974) + at jsr166y.ForkJoinPool.runWorker(ForkJoinPool.java:1477) + at jsr166y.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:104)

    JIRA | 3 years ago | Earl Hathaway
    java.lang.IllegalArgumentException: 0 > -2147483648
  3. 0

    Build git hash: 2265f6aab0c2422fe28e08ba435a451f4a0fd71d Build project version: 2.1.0.99999 Built on: 'Tue Jan 14 12:18:33 PST 2014' heap size = 30G Import and parse cust_train.txt and cuts_test.txt ( 192.168.1.163: /home/nidhi/cust_churn/ ) Build DRF model with following params and get following error- 14-Jan 12:35:42.442 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: Starting DRF model build... 14-Jan 12:35:42.443 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: destination_key: DRF_a644616ea28988aaa24ceb2db174a79 14-Jan 12:35:42.443 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: source.numCols(): 173 14-Jan 12:35:42.444 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: source.numRows(): 90000 14-Jan 12:35:42.444 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: cols: 171 columns selected 14-Jan 12:35:42.444 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: ignored_cols: 1 columns ignored 14-Jan 12:35:42.445 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: response: churn 14-Jan 12:35:42.445 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: classification 14-Jan 12:35:42.446 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: validation.numCols(): 173 14-Jan 12:35:42.446 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: validation.numRows(): 10000 14-Jan 12:35:42.447 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: ntrees: 3000 14-Jan 12:35:42.447 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: max_depth: 999 14-Jan 12:35:42.447 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: min_rows: 1 14-Jan 12:35:42.448 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: nbins: 20 14-Jan 12:35:42.448 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: mtry defined: -1 14-Jan 12:35:42.449 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: mtry computed: 13 14-Jan 12:35:42.449 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: sample_rate: 0.6666667 14-Jan 12:35:42.449 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: seed: 3170528642942386000 14-Jan 12:35:42.655 192.168.1.163:54321 12430 FJ-9-43 INFO DRF__: ====================================================== 14-Jan 02:19:20.107 192.168.1.163:54321 12430 FJ-9-43 INFO DRF__: Mean Squared Error is 0.24477320770724878, with 2805x2 trees (average of 31872.5 nodes) 14-Jan 02:19:20.107 192.168.1.163:54321 12430 FJ-9-43 INFO DRF__: Total of 4345 errors on 10000 rows, CM= [[1849, 3192], [1153, 3806]] 14-Jan 02:21:37.941 192.168.1.163:54321 12430 FJ-9-43 ERRR WATER: + java.lang.IllegalArgumentException: 0 > -2147483648 + at java.util.Arrays.copyOfRange(Arrays.java:3064) + at water.MemoryManager.malloc(MemoryManager.java:235) + at water.MemoryManager.arrayCopyOfRange(MemoryManager.java:260) + at water.AutoBuffer.sendPartial(AutoBuffer.java:497) + at water.AutoBuffer.putA1(AutoBuffer.java:1022) + at water.AutoBuffer.putA1(AutoBuffer.java:1016) + at water.AutoBuffer.putA1(AutoBuffer.java:1014) + at hex.gbm.DTree$TreeModel$CompressedTree.write(DTree.java) + at water.AutoBuffer.put(AutoBuffer.java:600) + at water.AutoBuffer.putA(AutoBuffer.java:656) + at water.AutoBuffer.putAA(AutoBuffer.java:665) + at hex.gbm.DTree$TreeModel.write(DTree.java) + at hex.drf.DRF$DRFModel.write(DRF.java) + at water.Value.(Value.java:349) + at water.Value.(Value.java:344) + at water.DKV.put(DKV.java:29) + at water.DKV.put(DKV.java:27) + at hex.gbm.SharedTreeModelBuilder.doScoring(SharedTreeModelBuilder.java:196) + at hex.drf.DRF.buildModel(DRF.java:171) + at hex.gbm.SharedTreeModelBuilder.buildModel(SharedTreeModelBuilder.java:162) + at hex.drf.DRF.exec(DRF.java:131) + at water.Job$4.compute2(Job.java:492) + at water.H2O$H2OCountedCompleter.compute(H2O.java:677) + at jsr166y.CountedCompleter.exec(CountedCompleter.java:429) + at jsr166y.ForkJoinTask.doExec(ForkJoinTask.java:263) + at jsr166y.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:974) + at jsr166y.ForkJoinPool.runWorker(ForkJoinPool.java:1477) + at jsr166y.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:104)

    JIRA | 3 years ago | Nidhi Mehta
    java.lang.IllegalArgumentException: 0 > -2147483648
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  5. 0

    Build git hash: 2265f6aab0c2422fe28e08ba435a451f4a0fd71d Build project version: 2.1.0.99999 Built on: 'Tue Jan 14 12:18:33 PST 2014' heap size = 30G Import and parse cust_train.txt and cuts_test.txt ( 192.168.1.163: /home/nidhi/cust_churn/ ) Build DRF model with following params and get following error- 14-Jan 12:35:42.442 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: Starting DRF model build... 14-Jan 12:35:42.443 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: destination_key: DRF_a644616ea28988aaa24ceb2db174a79 14-Jan 12:35:42.443 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: source.numCols(): 173 14-Jan 12:35:42.444 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: source.numRows(): 90000 14-Jan 12:35:42.444 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: cols: 171 columns selected 14-Jan 12:35:42.444 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: ignored_cols: 1 columns ignored 14-Jan 12:35:42.445 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: response: churn 14-Jan 12:35:42.445 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: classification 14-Jan 12:35:42.446 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: validation.numCols(): 173 14-Jan 12:35:42.446 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: validation.numRows(): 10000 14-Jan 12:35:42.447 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: ntrees: 3000 14-Jan 12:35:42.447 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: max_depth: 999 14-Jan 12:35:42.447 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: min_rows: 1 14-Jan 12:35:42.448 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: nbins: 20 14-Jan 12:35:42.448 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: mtry defined: -1 14-Jan 12:35:42.449 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: mtry computed: 13 14-Jan 12:35:42.449 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: sample_rate: 0.6666667 14-Jan 12:35:42.449 192.168.1.163:54321 12430 FJ-9-43 INFO WATER: seed: 3170528642942386000 14-Jan 12:35:42.655 192.168.1.163:54321 12430 FJ-9-43 INFO DRF__: ====================================================== 14-Jan 02:19:20.107 192.168.1.163:54321 12430 FJ-9-43 INFO DRF__: Mean Squared Error is 0.24477320770724878, with 2805x2 trees (average of 31872.5 nodes) 14-Jan 02:19:20.107 192.168.1.163:54321 12430 FJ-9-43 INFO DRF__: Total of 4345 errors on 10000 rows, CM= [[1849, 3192], [1153, 3806]] 14-Jan 02:21:37.941 192.168.1.163:54321 12430 FJ-9-43 ERRR WATER: + java.lang.IllegalArgumentException: 0 > -2147483648 + at java.util.Arrays.copyOfRange(Arrays.java:3064) + at water.MemoryManager.malloc(MemoryManager.java:235) + at water.MemoryManager.arrayCopyOfRange(MemoryManager.java:260) + at water.AutoBuffer.sendPartial(AutoBuffer.java:497) + at water.AutoBuffer.putA1(AutoBuffer.java:1022) + at water.AutoBuffer.putA1(AutoBuffer.java:1016) + at water.AutoBuffer.putA1(AutoBuffer.java:1014) + at hex.gbm.DTree$TreeModel$CompressedTree.write(DTree.java) + at water.AutoBuffer.put(AutoBuffer.java:600) + at water.AutoBuffer.putA(AutoBuffer.java:656) + at water.AutoBuffer.putAA(AutoBuffer.java:665) + at hex.gbm.DTree$TreeModel.write(DTree.java) + at hex.drf.DRF$DRFModel.write(DRF.java) + at water.Value.(Value.java:349) + at water.Value.(Value.java:344) + at water.DKV.put(DKV.java:29) + at water.DKV.put(DKV.java:27) + at hex.gbm.SharedTreeModelBuilder.doScoring(SharedTreeModelBuilder.java:196) + at hex.drf.DRF.buildModel(DRF.java:171) + at hex.gbm.SharedTreeModelBuilder.buildModel(SharedTreeModelBuilder.java:162) + at hex.drf.DRF.exec(DRF.java:131) + at water.Job$4.compute2(Job.java:492) + at water.H2O$H2OCountedCompleter.compute(H2O.java:677) + at jsr166y.CountedCompleter.exec(CountedCompleter.java:429) + at jsr166y.ForkJoinTask.doExec(ForkJoinTask.java:263) + at jsr166y.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:974) + at jsr166y.ForkJoinPool.runWorker(ForkJoinPool.java:1477) + at jsr166y.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:104)

    JIRA | 3 years ago | Nidhi Mehta
    java.lang.IllegalArgumentException: 0 > -2147483648
  6. 0

    Subject: h2o.deeplearning - Java (memory) exception? Does h2o.deeplearing have a known problem with Java memory allocation? When I tried to run it with a large 2-layer network, each with 5000 neurons (see below), it crashed after it output the network parameter setting, causing an exception (see Output below). This happened for both java version of "1.8.0_45" with max 150g heap, and "1.7.0_79" with max 6g heap. When the size of the neurons was smaller (e.g., 2000 each), this exception did not happen. Is this a know problem with H2O/Java? Neural network model.dl <- h2o.deeplearning( x = 2:(32^3+1), y = 1, classification=T, data = train.h2o, validation = test.h2o, activation = "TanhWithDropout", hidden = c(5000,5000), epochs = 100, train_samples_per_iteration = -1 ) Output: java.lang.IllegalArgumentException: 0 > -2147483648 at java.util.Arrays.copyOfRange(Arrays.java:3519) at water.MemoryManager.malloc(MemoryManager.java:251) at water.MemoryManager.malloc(MemoryManager.java:223) at water.MemoryManager.arrayCopyOfRange(MemoryManager.java:285) at water.AutoBuffer.sendPartial(AutoBuffer.java:507) at water.AutoBuffer.putA4f(AutoBuffer.java:1134) at hex.deeplearning.Neurons$DenseRowMatrix.write(Neurons.java) at water.AutoBuffer.put(AutoBuffer.java:604) at water.AutoBuffer.putA(AutoBuffer.java:660) at hex.deeplearning.DeepLearningModel$DeepLearningModelInfo.write(DeepLearningModel.java) at water.AutoBuffer.put(AutoBuffer.java:598) at hex.deeplearning.DeepLearningModel.write(DeepLearningModel.java) at water.Value.<init>(Value.java:358) at water.TAtomic.atomic(TAtomic.java:23) at water.Atomic.compute2(Atomic.java:58) at water.Atomic.fork(Atomic.java:42) at water.Atomic.invoke(Atomic.java:34) at water.Lockable.write_lock(Lockable.java:60) at hex.deeplearning.DeepLearning.trainModel(DeepLearning.java:1039) at hex.deeplearning.DeepLearning.buildModel(DeepLearning.java:849) at hex.deeplearning.DeepLearning.execImpl(DeepLearning.java:755) at water.Func.exec(Func.java:42) at water.Job$3.compute2(Job.java:334) at water.H2O$H2OCountedCompleter.compute(H2O.java:656) at jsr166y.CountedCompleter.exec(CountedCompleter.java:429) at jsr166y.ForkJoinTask.doExec(ForkJoinTask.java:263) at jsr166y.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:974) at jsr166y.ForkJoinPool.runWorker(ForkJoinPool.java:1477) at jsr166y.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:104)

    JIRA | 2 years ago | Arno Candel
    java.lang.IllegalArgumentException: 0 > -2147483648

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    Root Cause Analysis

    1. java.lang.IllegalArgumentException

      0 > -2147483648

      at java.util.Arrays.copyOfRange()
    2. Java RT
      Arrays.copyOfRange
      1. java.util.Arrays.copyOfRange(Arrays.java:3064)
      1 frame
    3. water
      AutoBuffer.putA1
      1. water.MemoryManager.malloc(MemoryManager.java:235)
      2. water.MemoryManager.arrayCopyOfRange(MemoryManager.java:260)
      3. water.AutoBuffer.sendPartial(AutoBuffer.java:497)
      4. water.AutoBuffer.putA1(AutoBuffer.java:1022)
      5. water.AutoBuffer.putA1(AutoBuffer.java:1016)
      6. water.AutoBuffer.putA1(AutoBuffer.java:1014)
      6 frames
    4. hex.gbm
      DTree$TreeModel$CompressedTree.write
      1. hex.gbm.DTree$TreeModel$CompressedTree.write(DTree.java)
      1 frame
    5. water
      AutoBuffer.putAA
      1. water.AutoBuffer.put(AutoBuffer.java:600)
      2. water.AutoBuffer.putA(AutoBuffer.java:656)
      3. water.AutoBuffer.putAA(AutoBuffer.java:665)
      3 frames
    6. hex.gbm
      DTree$TreeModel.write
      1. hex.gbm.DTree$TreeModel.write(DTree.java)
      1 frame
    7. hex.drf
      DRF$DRFModel.write
      1. hex.drf.DRF$DRFModel.write(DRF.java)
      1 frame
    8. water
      DKV.put
      1. water.Value.<init>(Value.java:349)
      2. water.Value.<init>(Value.java:344)
      3. water.DKV.put(DKV.java:29)
      4. water.DKV.put(DKV.java:27)
      4 frames
    9. hex.gbm
      SharedTreeModelBuilder.doScoring
      1. hex.gbm.SharedTreeModelBuilder.doScoring(SharedTreeModelBuilder.java:196)
      1 frame
    10. hex.drf
      DRF.buildModel
      1. hex.drf.DRF.buildModel(DRF.java:166)
      1 frame
    11. hex.gbm
      SharedTreeModelBuilder.buildModel
      1. hex.gbm.SharedTreeModelBuilder.buildModel(SharedTreeModelBuilder.java:162)
      1 frame
    12. hex.drf
      DRF.exec
      1. hex.drf.DRF.exec(DRF.java:123)
      1 frame
    13. water
      H2O$H2OCountedCompleter.compute
      1. water.Job$4.compute2(Job.java:492)
      2. water.H2O$H2OCountedCompleter.compute(H2O.java:677)
      2 frames
    14. jsr166y
      ForkJoinWorkerThread.run
      1. jsr166y.CountedCompleter.exec(CountedCompleter.java:429)
      2. jsr166y.ForkJoinTask.doExec(ForkJoinTask.java:263)
      3. jsr166y.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:974)
      4. jsr166y.ForkJoinPool.runWorker(ForkJoinPool.java:1477)
      5. jsr166y.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:104)
      5 frames