[jira] [Created] (DRILL-6665) MergingReceiverBatch produces OK_NEW_SCHEMA post build schema phase

["Sorabh Hamirwasia (JIRA)" <ji...@apache.org>]

Sorabh Hamirwasia created DRILL-6665:
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             Summary: MergingReceiverBatch produces OK_NEW_SCHEMA post build schema phase
                 Key: DRILL-6665
                 URL: https://issues.apache.org/jira/browse/DRILL-6665
             Project: Apache Drill
          Issue Type: Bug
          Components: Execution - Relational Operators
    Affects Versions: 1.14.0
            Reporter: Sorabh Hamirwasia
            Assignee: Sorabh Hamirwasia
         Attachments: Plan.pdf

MergingRecordBatch produces OK_NEW_SCHEMA as part of first output batch post buildSchema phase. This is not necessary since in BuildSchema phase it already has the batch with schema and it always produces container of type SV NONE as well. Because of this behavior query like below doesn't work since there is HashAgg downstream to MergingReceiver which doesn't handle OK_NEW_SCHEMA post buildSchema phase.

 
{code:java}
SELECT cust.c_custkey, cust.c_name, sum(cust.c_acctbal) 
FROM (SELECT customer.c_custkey, customer.c_name, customer.c_acctbal
FROM dfs.singleJson.`customer.json` customer 
ORDER BY customer.c_name) cust
GROUP BY cust.c_custkey, cust.c_name{code}



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