[MLlib] org.apache.spark.mllib.util.SVMDataGenerator generates ArrayIndexOutOfBoundsException. I have found the bug and tested the solution.#13895
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…yIndexOutOfBoundsException. I have found the bug and tested the solution. line 66: val yD = blas.ddot(trueWeights.length, x, 1, trueWeights, 1) + rnd.nextGaussian() * 0.1 crashes because trueWeights has length "nfeatures + 1" while "x" has length "features", and they should have the same length. To fix this just make trueWeights be the same length as x. I have recompiled the project with the change and it is working now: [spark-1.6.1]$ spark-submit --master local[*] --class org.apache.spark.mllib.util.SVMDataGenerator mllib/target/spark-mllib_2.11-1.6.1.jar local /home/user/test And it generates the data successfully now in the specified folder.
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Jenkins test this please |
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Test build #61193 has finished for PR 13895 at commit
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Merging to master and 2.0 / 1.6 as a clean bug fix. I also tested it. |
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…ndexOutOfBoundsException. I have found the bug and tested the solution. ## What changes were proposed in this pull request? Just adjust the size of an array in line 58 so it does not cause an ArrayOutOfBoundsException in line 66. ## How was this patch tested? Manual tests. I have recompiled the entire project with the fix, it has been built successfully and I have run the code, also with good results. line 66: val yD = blas.ddot(trueWeights.length, x, 1, trueWeights, 1) + rnd.nextGaussian() * 0.1 crashes because trueWeights has length "nfeatures + 1" while "x" has length "features", and they should have the same length. To fix this just make trueWeights be the same length as x. I have recompiled the project with the change and it is working now: [spark-1.6.1]$ spark-submit --master local[*] --class org.apache.spark.mllib.util.SVMDataGenerator mllib/target/spark-mllib_2.11-1.6.1.jar local /home/user/test And it generates the data successfully now in the specified folder. Author: José Antonio <joseanmunoz@gmail.com> Closes #13895 from j4munoz/patch-2. (cherry picked from commit a3c7b41) Signed-off-by: Sean Owen <sowen@cloudera.com>
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…ndexOutOfBoundsException. I have found the bug and tested the solution. ## What changes were proposed in this pull request? Just adjust the size of an array in line 58 so it does not cause an ArrayOutOfBoundsException in line 66. ## How was this patch tested? Manual tests. I have recompiled the entire project with the fix, it has been built successfully and I have run the code, also with good results. line 66: val yD = blas.ddot(trueWeights.length, x, 1, trueWeights, 1) + rnd.nextGaussian() * 0.1 crashes because trueWeights has length "nfeatures + 1" while "x" has length "features", and they should have the same length. To fix this just make trueWeights be the same length as x. I have recompiled the project with the change and it is working now: [spark-1.6.1]$ spark-submit --master local[*] --class org.apache.spark.mllib.util.SVMDataGenerator mllib/target/spark-mllib_2.11-1.6.1.jar local /home/user/test And it generates the data successfully now in the specified folder. Author: José Antonio <joseanmunoz@gmail.com> Closes #13895 from j4munoz/patch-2. (cherry picked from commit a3c7b41) Signed-off-by: Sean Owen <sowen@cloudera.com>
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…ndexOutOfBoundsException. I have found the bug and tested the solution. ## What changes were proposed in this pull request? Just adjust the size of an array in line 58 so it does not cause an ArrayOutOfBoundsException in line 66. ## How was this patch tested? Manual tests. I have recompiled the entire project with the fix, it has been built successfully and I have run the code, also with good results. line 66: val yD = blas.ddot(trueWeights.length, x, 1, trueWeights, 1) + rnd.nextGaussian() * 0.1 crashes because trueWeights has length "nfeatures + 1" while "x" has length "features", and they should have the same length. To fix this just make trueWeights be the same length as x. I have recompiled the project with the change and it is working now: [spark-1.6.1]$ spark-submit --master local[*] --class org.apache.spark.mllib.util.SVMDataGenerator mllib/target/spark-mllib_2.11-1.6.1.jar local /home/user/test And it generates the data successfully now in the specified folder. Author: José Antonio <joseanmunoz@gmail.com> Closes apache#13895 from j4munoz/patch-2. (cherry picked from commit a3c7b41) Signed-off-by: Sean Owen <sowen@cloudera.com> (cherry picked from commit 24d59fb)
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What changes were proposed in this pull request?
Just adjust the size of an array in line 58 so it does not cause an ArrayOutOfBoundsException in line 66.
How was this patch tested?
Manual tests. I have recompiled the entire project with the fix, it has been built successfully and I have run the code, also with good results.
line 66: val yD = blas.ddot(trueWeights.length, x, 1, trueWeights, 1) + rnd.nextGaussian() * 0.1
crashes because trueWeights has length "nfeatures + 1" while "x" has length "features", and they should have the same length.
To fix this just make trueWeights be the same length as x.
I have recompiled the project with the change and it is working now:
[spark-1.6.1]$ spark-submit --master local[*] --class org.apache.spark.mllib.util.SVMDataGenerator mllib/target/spark-mllib_2.11-1.6.1.jar local /home/user/test
And it generates the data successfully now in the specified folder.