[jira] [Created] (SPARK-34476) Duplicate referenceNames are given for ambiguousReferences

["Ted Yu (Jira)" <ji...@apache.org>]

Ted Yu created SPARK-34476:
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             Summary: Duplicate referenceNames are given for ambiguousReferences
                 Key: SPARK-34476
                 URL: https://issues.apache.org/jira/browse/SPARK-34476
             Project: Spark
          Issue Type: Bug
          Components: Spark Core
    Affects Versions: 3.0.0
            Reporter: Ted Yu


When running test with Spark extension that converts custom function to json path expression, I saw the following in test output:
{code}
2021-02-19 21:57:24,550 (Time-limited test) [INFO - org.yb.loadtest.TestSpark3Jsonb.testJsonb(TestSpark3Jsonb.java:102)] plan is == Physical Plan ==
org.apache.spark.sql.AnalysisException: Reference 'phone->'key'->1->'m'->2->>'b'' is ambiguous, could be: mycatalog.test.person.phone->'key'->1->'m'->2->>'b', mycatalog.test.person.phone->'key'->1->'m'->2->>'b'.; line 1 pos 8
{code}
Please note the candidates following 'could be' are the same.
Here is the physical plan for a working query where phone is a jsonb column:
{code}
TakeOrderedAndProject(limit=2, orderBy=[id#6 ASC NULLS FIRST], output=[id#6,address#7,key#0])
+- *(1) Project [id#6, address#7, phone->'key'->1->'m'->2->'b'#12 AS key#0]
   +- BatchScan[id#6, address#7, phone->'key'->1->'m'->2->'b'#12] Cassandra Scan: test.person
 - Cassandra Filters: [[phone->'key'->1->'m'->2->>'b' >= ?, 100]]
 - Requested Columns: [id,address,phone->'key'->1->'m'->2->'b']
{code}
The difference for the failed query is that it tries to use phone->'key'->1->'m'->2->>'b' in the projection (which works as part of filter).



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