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

["Apache Spark (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-34476?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-34476:
------------------------------------

    Assignee: Apache Spark

> 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
>            Assignee: Apache Spark
>            Priority: Major
>
> 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 {code}phone->'key'->1->'m'->2->>'b'{code} in the projection (which works as part of filter).



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