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From "jean-claude (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-4858) REPEATED_COUNT on JSON containing an array of maps
Date Mon, 22 Aug 2016 14:20:21 GMT
jean-claude created DRILL-4858:
----------------------------------

             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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