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https://issues.apache.org/jira/browse/ARROW-1467?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wes McKinney updated ARROW-1467:
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Fix Version/s: 0.7.0
> [JAVA]: Fix reset() and allocateNew() in Nullable Value Vectors template
> ------------------------------------------------------------------------
>
> Key: ARROW-1467
> URL: https://issues.apache.org/jira/browse/ARROW-1467
> Project: Apache Arrow
> Issue Type: Bug
> Components: Java - Vectors
> Reporter: Siddharth Teotia
> Assignee: Siddharth Teotia
> Fix For: 0.7.0
>
>
> (1)
> allocateNew() in NullableValueVectors allocates extra memory for the validity
> vector of fixed-width vectors. Instead of doing bits.allocateNew(valueCount +
> 1), we should simply do bits.allocateNew(valueCount).
> AFAIK, the only case where we need an additional valueCount is for the
> offsetVector and we already do that. Additional valueCount for the validity
> vector is not needed.
> (2)
> reset() method should call reset() on the underlying value vector as well to
> re-initialize the state (allocation monitor, reader index etc) and zero out
> the buffers. Right now we just reset the validity vector.
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