Github user helenahm commented on the issue:
https://github.com/apache/incubator-hivemall/pull/82
Also, in my query (below), I had to add ln != null, to not submit empty
text, otherwise an error (below below) is thrown
create temporary function train_lda as 'hivemall.topicmodel.LDAUDTF';
with word_counts as (
select
cast(rownum as int) as docid,
feature(word, count(word)) as word_count
from data_rownum t1 LATERAL VIEW explode(tokenize(ln, true)) t2 as word
where
not is_stopword(word) and ln != ""
group by
rownum, word
)
select
label, word, avg(lambda) as lambda
from (
select
train_lda(feature, "-topics 2 -iter 20") as (label, word, lambda)
from (
select docid, collect_set(word_count) as feature
from word_counts
group by docid
) t1
) t2
group by label, word
order by lambda desc
;
Diagnostic Messages for this Task:
Error: java.lang.RuntimeException:
org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error while
processing row {"rownum":"179","ln":null}
at
org.apache.hadoop.hive.ql.exec.mr.ExecMapper.map(ExecMapper.java:169)
at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:54)
at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:455)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:344)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:164)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1698)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)
Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime
Error while processing row {"rownum":"179","ln":null}
at
org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:499)
at
org.apache.hadoop.hive.ql.exec.mr.ExecMapper.map(ExecMapper.java:160)
... 8 more
Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Unable to
execute method public java.util.List
hivemall.tools.text.TokenizeUDF.evaluate(org.apache.hadoop.io.Text,boolean) on
object hivemall.tools.text.TokenizeUDF@6240651f of class
hivemall.tools.text.TokenizeUDF with arguments {null, true:java.lang.Boolean}
of size 2
at
org.apache.hadoop.hive.ql.exec.FunctionRegistry.invoke(FunctionRegistry.java:991)
at
org.apache.hadoop.hive.ql.udf.generic.GenericUDFBridge.evaluate(GenericUDFBridge.java:194)
at
org.apache.hadoop.hive.ql.exec.ExprNodeGenericFuncEvaluator._evaluate(ExprNodeGenericFuncEvaluator.java:186)
at
org.apache.hadoop.hive.ql.exec.ExprNodeEvaluator.evaluate(ExprNodeEvaluator.java:77)
at
org.apache.hadoop.hive.ql.exec.ExprNodeEvaluator.evaluate(ExprNodeEvaluator.java:65)
at
org.apache.hadoop.hive.ql.exec.SelectOperator.process(SelectOperator.java:88)
at
org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:879)
at
org.apache.hadoop.hive.ql.exec.LateralViewForwardOperator.process(LateralViewForwardOperator.java:39)
at
org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:879)
at
org.apache.hadoop.hive.ql.exec.FilterOperator.process(FilterOperator.java:126)
at
org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:879)
at
org.apache.hadoop.hive.ql.exec.TableScanOperator.process(TableScanOperator.java:130)
at
org.apache.hadoop.hive.ql.exec.MapOperator$MapOpCtx.forward(MapOperator.java:149)
at
org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:489)
... 9 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.apache.hadoop.hive.ql.exec.FunctionRegistry.invoke(FunctionRegistry.java:967)
... 22 more
Caused by: java.lang.NullPointerException
at hivemall.tools.text.TokenizeUDF.evaluate(TokenizeUDF.java:42)
... 26 more
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