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https://issues.apache.org/jira/browse/ARROW-1694?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16239168#comment-16239168
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Li Jin commented on ARROW-1694:
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I don't think this is a bug. From my understanding, dictionary vectors should
be kept open if the reader is open. Closing the root here:
https://github.com/apache/arrow/blob/master/java/vector/src/main/java/org/apache/arrow/vector/file/json/JsonFileReader.java#L154
will close the dictionary vectors.
> [Java] Unclosed VectorSchemaRoot in JsonFileReader#readDictionaryBatches()
> --------------------------------------------------------------------------
>
> Key: ARROW-1694
> URL: https://issues.apache.org/jira/browse/ARROW-1694
> Project: Apache Arrow
> Issue Type: Bug
> Components: Java - Vectors
> Reporter: Ted Yu
> Priority: Minor
> Fix For: 0.8.0
>
>
> {code}
> VectorSchemaRoot root = new VectorSchemaRoot(fields, vectors,
> vector.getAccessor().getValueCount());
> read(root);
> {code}
> root should be closed upon return from the method.
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