Github user amaya382 commented on the issue:
https://github.com/apache/incubator-hivemall/pull/95
@myui this is it
```
select train_xgboost_classifier(features, case when label = 'Iris-setosa'
then 1.0 else 0.0 end) from iris_scaled;
OK
org.apache.hadoop.hive.ql.metadata.HiveException: MapredContext is not set
at hivemall.xgboost.XGBoostUDTF.close(XGBoostUDTF.java:333)
at
org.apache.hadoop.hive.ql.exec.UDTFOperator.closeOp(UDTFOperator.java:152)
at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:683)
at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:697)
at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:697)
at
org.apache.hadoop.hive.ql.exec.FetchOperator.closeOperator(FetchOperator.java:552)
at
org.apache.hadoop.hive.ql.exec.FetchTask.fetch(FetchTask.java:152)
at org.apache.hadoop.hive.ql.Driver.getResults(Driver.java:2098)
at
org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:252)
at
org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:183)
at
org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:399)
at
org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:776)
at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:714)
at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:641)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
org.apache.hadoop.hive.ql.metadata.HiveException: MapredContext is not set
at hivemall.xgboost.XGBoostUDTF.close(XGBoostUDTF.java:333)
at
org.apache.hadoop.hive.ql.exec.UDTFOperator.closeOp(UDTFOperator.java:152)
at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:683)
at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:697)
at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:697)
at
org.apache.hadoop.hive.ql.exec.FetchOperator.closeOperator(FetchOperator.java:552)
at
org.apache.hadoop.hive.ql.exec.FetchTask.fetch(FetchTask.java:152)
at org.apache.hadoop.hive.ql.Driver.getResults(Driver.java:2098)
at
org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:252)
at
org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:183)
at
org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:399)
at
org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:776)
at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:714)
at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:641)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
Failed with exception
java.io.IOException:org.apache.hadoop.hive.ql.metadata.HiveException:
MapredContext is not set
```
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