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https://issues.apache.org/jira/browse/ARROW-1693?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16258789#comment-16258789
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ASF GitHub Bot commented on ARROW-1693:
---------------------------------------
trxcllnt commented on issue #1294: ARROW-1693: [JS] Fix reading C++
dictionary-encoded vectors
URL: https://github.com/apache/arrow/pull/1294#issuecomment-345585644
@wesm actually this might be tough -- the JS version of closure-compiler is
a bit outdated, and the Java version [hasn't supported Java 7 since
October](https://github.com/google/closure-compiler/issues/2672).
I don't want to skip running the tests on the ES5 UMD bundle, as that's the
lowest-common-denominator for anyone wanting to experiment with Arrow in the
browser, and the integration tests validate that public methods and properties
don't get minified away.
Is it possible to update the integration job to openjdk8 (like the java
version)? If not, I can create a sibling `integration-java8` job that includes
the JS tests.
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> [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
> Assignee: Paul Taylor
> Labels: pull-request-available
> Fix For: 0.8.0
>
> 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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