jean-claude created DRILL-4858:
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Summary: REPEATED_COUNT on JSON containing an array of maps
Key: DRILL-4858
URL: https://issues.apache.org/jira/browse/DRILL-4858
Project: Apache Drill
Issue Type: Bug
Reporter: jean-claude
Priority: Minor
REPEATED_COUNT of JSON containing an array of map does not work.
JSON file
{code}
drill$ cat /Users/jccote/repeated_count.json
{"intArray": [1,2,3,4], "mapArray": [{"name": "foo"},{"name": "foo"}], "label":
"foo"}
{"intArray": [1,2,3,4], "mapArray": [{"name": "foo"},{"name": "foo"}], "label":
"foo"}
{"intArray": [1,2,3,4], "mapArray": [{"name": "foo"},{"name": "foo"}], "label":
"foo"}
{"intArray": [1,2,3,4], "mapArray": [{"name": "foo"},{"name": "foo"}], "label":
"foo"}
{"intArray": [1,2,3,4], "mapArray": [{"name": "foo"},{"name": "foo"}], "label":
"foo"}
{"intArray": [1,2,3,4], "mapArray": [{"name": "foo"},{"name": "foo"}], "label":
"foo"}
{"intArray": [1,2,3,4], "mapArray": [{"name": "foo"},{"name": "foo"}], "label":
"foo"}
{"intArray": [1,2,3,4], "mapArray": [{"name": "foo"},{"name": "foo"}], "label":
"foo"}
{code}
select
{code}
0: jdbc:drill:zk=local> select repeated_count(mapArray) from
dfs.`/Users/jccote/repeated_count.json`;
{code}
error
{code}
Error: SYSTEM ERROR: SchemaChangeException: Failure while trying to materialize
incoming schema. Errors:
Error in expression at index -1. Error: Missing function implementation:
[repeated_count(MAP-REPEATED)]. Full expression: --UNKNOWN EXPRESSION--..
Fragment 0:0
[Error Id: 1057bb8e-1cc4-4a9a-a748-3a6a14092858 on 192.168.1.3:31010]
(state=,code=0)
{code}
Looking at the org.apache.drill.exec.expr.fn.impl.SimpleRepeatedFunctions
Looks like it's not enabled yet.
{code}
// TODO - need to confirm that these work SMP: They do not
@FunctionTemplate(name = "repeated_count", scope =
FunctionTemplate.FunctionScope.SIMPLE)
public static class RepeatedLengthMap implements DrillSimpleFunc {
{code}
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