Makoto Yui created HIVE-17406:
---------------------------------
Summary: Non-generic UDAF throws IllegalArgumentException for a
complex input when column stats is not provided
Key: HIVE-17406
URL: https://issues.apache.org/jira/browse/HIVE-17406
Project: Hive
Issue Type: Bug
Components: Query Processor
Affects Versions: 2.2.0
Reporter: Makoto Yui
Priority: Minor
I found that Non-generic UDAF of Hive v2.2.0 throws IllegalArgumentException
for a complex input when column stats is not provided. The exception does not
occur in v2.1.0.
https://github.com/apache/hive/blob/34eebff194e81180202d198200e84058c4910d95/ql/src/java/org/apache/hadoop/hive/ql/stats/StatsUtils.java#L1156
{code:sql}
select version();
> 2.3.0-amzn-0 rcb482944667f96f43c89932dcb66d61ee7e4ac1d
with t2 as (
select array(1,2) as c1
union all
select array(2,3) as c1
)
select collect_list(c1) from t2;
> FAILED: IllegalArgumentException Size requested for unknown type:
> java.util.Collection
{code}
On the other hand, it succeeds when colunm stats is provided as follows:
{code:sql}
create table t1 as (
select array(1,2) as c1
union all
select array(2,3) as c1
);
> select collect_list(c1) from t1;
[[1,2],[2,3]]
> desc formatted t1;
...
Table Parameters:
COLUMN_STATS_ACCURATE {\"BASIC_STATS\":\"true\"}
numFiles 2
numRows 2
rawDataSize 6
totalSize 8
transient_lastDdlTime 1503990290
{code}
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