[jira] [Updated] (ARROW-11223) [Java] BaseVariableWidthVector/BaseLargeVariableWidthVector setNull and getBufferSizeFor is buggy

["Weichen Xu (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-11223?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Weichen Xu updated ARROW-11223:
-------------------------------
    Summary: [Java] BaseVariableWidthVector/BaseLargeVariableWidthVector setNull and getBufferSizeFor is buggy  (was: [Java] BaseVariableWidthVector setNull and getBufferSizeFor is buggy)

> [Java] BaseVariableWidthVector/BaseLargeVariableWidthVector setNull and getBufferSizeFor is buggy
> -------------------------------------------------------------------------------------------------
>
>                 Key: ARROW-11223
>                 URL: https://issues.apache.org/jira/browse/ARROW-11223
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Java
>    Affects Versions: 2.0.0
>            Reporter: Weichen Xu
>            Assignee: Weichen Xu
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 1h 50m
>  Remaining Estimate: 0h
>
> We may get error  java.lang.IndexOutOfBoundsException: index: 15880, length: 4 (expected: range(0, 15880)).
> I test on arrow 2.0.0
> Reproduce code in scala:
> {code}
> import org.apache.arrow.vector.VarCharVector
> import org.apache.arrow.memory.RootAllocator
> val rootAllocator = new RootAllocator(Long.MaxValue)
> val v1 = new VarCharVector("var1", rootAllocator)
> v1.allocateNew()
> val valueCount = 3970 // use any number >= 3970 will get similar error
> for (idx <- 0 until valueCount) {
>   v1.setNull(idx)
> }
> v1.getBufferSizeFor(valueCount) # failed, get error java.lang.IndexOutOfBoundsException: index: 15880, length: 4 (expected: range(0, 15880))
> {code}



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