Github user nzw0301 commented on the issue:
https://github.com/apache/incubator-hivemall/pull/107
But I found another issue for f1score and fmeasure.
Both function cannot work on `EMR v5.8.0`
```sql
hive> select f1score(array(1), array(1));
FAILED: IllegalArgumentException Size requested for unknown type:
org.apache.hadoop.hive.ql.exec.UDAFEvaluator
```
```sql
hive> select fmeasure(array(1), array(1));
FAILED: IllegalArgumentException Size requested for unknown type:
java.lang.String
```
However, they can work on `EMR v5.0.0`.
I don't know why the failures occur on newer EMR.
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