[jira] [Created] (ARROW-1693) [JS] Error reading dictionary-encoded integration test files

["Brian Hulette (JIRA)" <ji...@apache.org>]

Brian Hulette created ARROW-1693:
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             Summary: [JS] Error reading dictionary-encoded integration test files
                 Key: ARROW-1693
                 URL: https://issues.apache.org/jira/browse/ARROW-1693
             Project: Apache Arrow
          Issue Type: Bug
          Components: JavaScript
            Reporter: Brian Hulette
         Attachments: dictionary-cpp.arrow, dictionary-java.arrow, dictionary.json

The JS implementation crashes when reading the dictionary test case from the integration tests.

To replicate, first generate the test files with java and cpp impls:
{code}
$ cd ${ARROW_HOME}/integration/
$ python -c 'from integration_test import generate_dictionary_case; generate_dictionary_case().write("dictionary.json")'
$ ../cpp/debug/debug/json-integration-test --integration --json=dictionary.json --arrow=dictionary-cpp.arrow --mode=JSON_TO_ARROW
$ java -cp ../java/tools/target/arrow-tools-0.8.0-SNAPSHOT-jar-with-dependencies.jar org.apache.arrow.tools.Integration -c JSON_TO_ARROW -a dictionary-java.arrow -j dictionary.json
{code}

Attempt to read the files with the JS impl:
{code}
$ cd ${ARROW_HOME}/js/
$ ./bin/arrow2csv.js -s dict1_0 -f ../integration/dictionary-{java,cpp}.arrow
{code}

Both files result in an error for me on [a8f51858|https://github.com/apache/arrow/commit/a8f518588fda471b2e3cc8e0f0064e7c4bb99899]:
{{TypeError: Cannot read property 'buffer' of undefined}}



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