myui opened a new pull request #230:
URL: https://github.com/apache/incubator-hivemall/pull/230
## What changes were proposed in this pull request?
Fixed corner case NPE bug when count is zero.
```
Caused by: java.lang.NullPointerException
at
hivemall.GeneralLearnerBaseUDTF.forwardModel(GeneralLearnerBaseUDTF.java:763)
at
hivemall.GeneralLearnerBaseUDTF.close(GeneralLearnerBaseUDTF.java:560)
at
org.apache.hadoop.hive.ql.exec.UDTFOperator.closeOp(UDTFOperator.java:152)
at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:697)
at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:711)
at
org.apache.hadoop.hive.ql.exec.mr.ExecReducer.close(ExecReducer.java:279)
```
## What type of PR is it?
Bug Fix
## What is the Jira issue?
https://issues.apache.org/jira/browse/HIVEMALL-296
## How was this patch tested?
unit tests
## Checklist
- [x] Did you apply source code formatter, i.e., `./bin/format_code.sh`, for
your commit?
- [ ] Did you run system tests on Hive (or Spark)?
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