Hi Malintha, Thanks for trying ML. @Wije can you please check?
On Fri, Oct 2, 2015 at 1:09 AM, Malintha Adikari <[email protected]> wrote: > Hi, > > I am trying to create a dataset from 748KB sized data file [1] and getting > following error. > > [2015-10-02 01:03:38,769] INFO > {org.wso2.carbon.ml.core.impl.MLDatasetProcessor} - [Created] MLDataset > [id=1, name=digitdd, tenantId=-1234, userName=admin, dataSourceType=file, > dataTargetType=file, sourcePath=null, dataType=csv, comments=, > version=1.0.0, containsHeader=true, status=null] > [2015-10-02 01:03:40,537] WARN > {org.wso2.carbon.ml.database.internal.MLDatabaseUtils} - An error occurred > while enabling autocommit: PooledConnection has already been closed. > java.sql.SQLException: PooledConnection has already been closed. > at > org.apache.tomcat.jdbc.pool.DisposableConnectionFacade.invoke(DisposableConnectionFacade.java:86) > at com.sun.proxy.$Proxy16.setAutoCommit(Unknown Source) > at > org.wso2.carbon.ml.database.internal.MLDatabaseUtils.enableAutoCommit(MLDatabaseUtils.java:153) > at > org.wso2.carbon.ml.database.internal.MLDatabaseService.updateSummaryStatistics(MLDatabaseService.java:2370) > at > org.wso2.carbon.ml.core.impl.SummaryStatsGenerator.run(SummaryStatsGenerator.java:130) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) > at java.lang.Thread.run(Thread.java:745) > [2015-10-02 01:03:40,550] ERROR > {org.wso2.carbon.ml.core.impl.SummaryStatsGenerator} - Error occurred > while calculating summary statistics for dataset version 1: An error > occurred while updating the database with summary statistics of the dataset > 1: 16 > org.wso2.carbon.ml.database.exceptions.DatabaseHandlerException: An error > occurred while updating the database with summary statistics of the dataset > 1: 16 > at > org.wso2.carbon.ml.database.internal.MLDatabaseService.updateSummaryStatistics(MLDatabaseService.java:2366) > at > org.wso2.carbon.ml.core.impl.SummaryStatsGenerator.run(SummaryStatsGenerator.java:130) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) > at java.lang.Thread.run(Thread.java:745) > Caused by: java.lang.ArrayIndexOutOfBoundsException: 16 > at > org.wso2.carbon.ml.database.internal.MLDatabaseService.updateSummaryStatistics(MLDatabaseService.java:2329) > ... 4 more > > What could be the possible reason for this error ? > > [1] > http://ocw.mit.edu/courses/sloan-school-of-management/15-097-prediction-machine-learning-and-statistics-spring-2012/datasets/digits.csv > > Regards, > Malintha > > -- > *Malintha Adikari* > Software Engineer > WSO2 Inc.; http://wso2.com > lean.enterprise.middleware > > Mobile: +94 71 2312958 > Blog: http://malinthas.blogspot.com > Page: http://about.me/malintha > -- Thanks & regards, Nirmal Team Lead - WSO2 Machine Learner Associate Technical Lead - Data Technologies Team, WSO2 Inc. Mobile: +94715779733 Blog: http://nirmalfdo.blogspot.com/
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