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Posted to jira@arrow.apache.org by "Liya Fan (Jira)" <ji...@apache.org> on 2021/10/05 09:52:00 UTC
[jira] [Commented] (ARROW-13981) [Java] VectorSchemaRootAppender
doesn't work for BitVector
[ https://issues.apache.org/jira/browse/ARROW-13981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17424398#comment-17424398 ]
Liya Fan commented on ARROW-13981:
----------------------------------
[~tzhang] I have provided a patch for the BitVector. Please check.
I have not found the problem for the DecimalVector and Float8Vector. Could you please provide more details about the problem?
> [Java] VectorSchemaRootAppender doesn't work for BitVector
> ----------------------------------------------------------
>
> Key: ARROW-13981
> URL: https://issues.apache.org/jira/browse/ARROW-13981
> Project: Apache Arrow
> Issue Type: Bug
> Components: Java
> Affects Versions: 4.0.0
> Reporter: ZHUO ZHANG
> Priority: Critical
> Labels: pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Looks like the buffer copy logic doesn't work for BitVector, even though the BitVector is from BaseFixedWidthVector. I created two VectorSchemaRoot (target empty), calling
> {code:java}
> VectorSchemaRootAppender.append(target, source);{code}
> then reading from the target didn't give me correct result.
>
> Hope to get confirmation from experts that this is a problem in Apache Arrow, if yes, wondering if there is a workaround (tried using copyFromSafe as well and it doesn't work either)
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