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[jira] [Created] (ARROW-3425) [JS] Programmatically created dictionary vectors don't get dictionary IDs


Brian Hulette created ARROW-3425:
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             Summary: [JS] Programmatically created dictionary vectors don't get dictionary IDs
                 Key: ARROW-3425
                 URL: https://issues.apache.org/jira/browse/ARROW-3425
             Project: Apache Arrow
          Issue Type: Bug
          Components: JavaScript
            Reporter: Brian Hulette
             Fix For: JS-0.4.0


This seems to be the cause of the test failures in https://github.com/apache/arrow/pull/2322

Modifying {{getSingleRecordBatchTable}} to [generate its vectors programmatically|https://github.com/apache/arrow/pull/2322/files#diff-eb6e5955a00e92f7bebb15a03f8437d1R359] (rather than deserializing hard-coded JSON), causes the new round-trip tests added in https://github.com/apache/arrow/pull/2638 to fail. The root cause seems to be that an ID is never allocated for the generated dictionary.



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