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  1. Apache Drill
  2. DRILL-4007

json reader treats empty list inconsistently,

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Details

    • Bug
    • Status: Open
    • Critical
    • Resolution: Unresolved
    • None
    • None
    • Storage - JSON
    • None

    Description

      Depending on where the empty list shows up, the empty list could be treated as empty-list or just a null.

      Running the following query on the folder with files in the attachment can reproduce the observation:

      +--------+
      |   a    |
      +--------+
      | null   |
      | ["b"]  |
      | []     |
      +--------+
      

      Note that both first and third records come from

      {“a”:[]}
      

      Attachments

        1. b.json
          0.0 kB
          Sean Hsuan-Yi Chu
        2. a.json
          0.0 kB
          Sean Hsuan-Yi Chu

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              seanhychu Sean Hsuan-Yi Chu
              seanhychu Sean Hsuan-Yi Chu
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              Dates

                Created:
                Updated: