[jira] [Created] (IMPALA-6397) IllegalStateException in planning of aggregation with float and decimal literal child expressions

["Alexander Behm (JIRA)" <ji...@apache.org>]

Alexander Behm created IMPALA-6397:
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             Summary: IllegalStateException in planning of aggregation with float and decimal literal child expressions
                 Key: IMPALA-6397
                 URL: https://issues.apache.org/jira/browse/IMPALA-6397
             Project: IMPALA
          Issue Type: Bug
          Components: Frontend
    Affects Versions: Impala 2.11.0, Impala 2.10.0, Impala 2.9.0
            Reporter: Alexander Behm


Reproduction:
{code}
select sum(float_col + d) from (select float_col, 1.2 d from functional.alltypes) v;
ERROR: IllegalStateException: Agg expr sum(float_col + 1.2) returns type DOUBLE but its output tuple slot has type DECIMAL(38,9)
{code}

FE Stack:
{code}
I0113 14:44:36.300395  9285 jni-util.cc:211] java.lang.IllegalStateException: Agg expr sum(f + 1.2) returns type DOUBLE but its output tuple slot has type DECIMAL(38,9)
	at com.google.common.base.Preconditions.checkState(Preconditions.java:145)
	at org.apache.impala.analysis.AggregateInfo.checkConsistency(AggregateInfo.java:702)
	at org.apache.impala.planner.AggregationNode.init(AggregationNode.java:165)
	at org.apache.impala.planner.SingleNodePlanner.createAggregationPlan(SingleNodePlanner.java:895)
	at org.apache.impala.planner.SingleNodePlanner.createSelectPlan(SingleNodePlanner.java:621)
	at org.apache.impala.planner.SingleNodePlanner.createQueryPlan(SingleNodePlanner.java:257)
	at org.apache.impala.planner.SingleNodePlanner.createSingleNodePlan(SingleNodePlanner.java:147)
	at org.apache.impala.planner.Planner.createPlan(Planner.java:101)
	at org.apache.impala.service.Frontend.createExecRequest(Frontend.java:1044)
	at org.apache.impala.service.Frontend.createExecRequest(Frontend.java:1147)
	at org.apache.impala.service.JniFrontend.createExecRequest(JniFrontend.java:156)
{code}

This bug does not happen with DECIMAL_V2=true. It is specific to the implicit casting behavior of DECIMAL_V1 with decimal literals.

Note that the following equivalent query without the inline view works fine:
{code}
select sum(float_col + 1.2) from functional.alltypes;
{code}

Also note that this bug only happens in combination with a decimal literal. The following query also works fine:
{code}
create table t (f float, d decimal (2,1));
select sum(float_col + d) from (select f, d from t) v;
// works fine
{code}



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