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Posted to issues@arrow.apache.org by "Nicholas Roberts (Jira)" <ji...@apache.org> on 2020/07/15 14:05:00 UTC

[jira] [Created] (ARROW-9479) [JS] Table.from fails for zero-item Lists, FixedSizeLists, Maps. ditto Table.empty

Nicholas Roberts created ARROW-9479:
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             Summary: [JS] Table.from fails for zero-item Lists, FixedSizeLists, Maps. ditto Table.empty
                 Key: ARROW-9479
                 URL: https://issues.apache.org/jira/browse/ARROW-9479
             Project: Apache Arrow
          Issue Type: Bug
          Components: JavaScript
    Affects Versions: 0.17.1
            Reporter: Nicholas Roberts


deserializing zero-item tables (as generated by Table.empty or, in this case, pyarrow.Schema.serialize) with a schema containing a List, FixedList or Map fail due to an unconditional 
{code:java}
new Data(/* preceding parameters */ buffers, [childData]){code}
statement, the childData parameter resolves to  [undefined] rather than the desired [].

 

 



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