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https://issues.apache.org/jira/browse/ARROW-1693?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16257649#comment-16257649
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ASF GitHub Bot commented on ARROW-1693:
---------------------------------------
wesm commented on issue #1294: ARROW-1693: [JS] Fix reading C++
dictionary-encoded vectors
URL: https://github.com/apache/arrow/pull/1294#issuecomment-345378644
This doesn't fail for me locally:
```
$ ../cpp/build/debug/json-integration-test --integration
--json=/tmp/tmp0jga4tt5/generated_primitive.json --arrow=foo.arrow
--mode=JSON_TO_ARROW
Found schema: bool_nullable: bool
bool_nonnullable: bool not null
int8_nullable: int8
int8_nonnullable: int8 not null
int16_nullable: int16
int16_nonnullable: int16 not null
int32_nullable: int32
int32_nonnullable: int32 not null
int64_nullable: int64
int64_nonnullable: int64 not null
uint8_nullable: uint8
uint8_nonnullable: uint8 not null
uint16_nullable: uint16
uint16_nonnullable: uint16 not null
uint32_nullable: uint32
uint32_nonnullable: uint32 not null
uint64_nullable: uint64
uint64_nonnullable: uint64 not null
float32_nullable: float
float32_nonnullable: float not null
float64_nullable: double
float64_nonnullable: double not null
binary_nullable: binary
binary_nonnullable: binary not null
utf8_nullable: string
utf8_nonnullable: string not null
```
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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: Brian Hulette
> 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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