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https://issues.apache.org/jira/browse/ARROW-18438?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Min-Young Wu reassigned ARROW-18438:
------------------------------------
Assignee: Min-Young Wu
> [Go] firstTimeBitmapWriter.Finish() panics with list of 8 structs
> -----------------------------------------------------------------
>
> Key: ARROW-18438
> URL: https://issues.apache.org/jira/browse/ARROW-18438
> Project: Apache Arrow
> Issue Type: Bug
> Components: Go, Parquet
> Affects Versions: 10.0.1
> Reporter: Min-Young Wu
> Assignee: Min-Young Wu
> Priority: Critical
> Labels: pull-request-available
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> Even after [ARROW-17169|https://issues.apache.org/jira/browse/ARROW-17169] I
> still get a panic at the same location.
> Below is a test case that panics:
> {code:go}
> func (ps *ParquetIOTestSuite) TestStructWithListOf8Structs() {
> bldr := array.NewStructBuilder(memory.DefaultAllocator, arrow.StructOf(
> arrow.Field{
> Name: "l",
> Type: arrow.ListOf(arrow.StructOf(
> arrow.Field{Name: "a", Type:
> arrow.BinaryTypes.String},
> )),
> },
> ))
> defer bldr.Release()
> lBldr := bldr.FieldBuilder(0).(*array.ListBuilder)
> stBldr := lBldr.ValueBuilder().(*array.StructBuilder)
> aBldr := stBldr.FieldBuilder(0).(*array.StringBuilder)
> bldr.AppendNull()
> bldr.Append(true)
> lBldr.Append(true)
> for i := 0; i < 8; i++ {
> stBldr.Append(true)
> aBldr.Append(strconv.Itoa(i))
> }
> arr := bldr.NewArray()
> defer arr.Release()
> field := arrow.Field{Name: "x", Type: arr.DataType(), Nullable: true}
> expected := array.NewTable(arrow.NewSchema([]arrow.Field{field}, nil),
> []arrow.Column{*arrow.NewColumn(field,
> arrow.NewChunked(field.Type, []arrow.Array{arr}))}, -1)
> defer expected.Release()
> ps.roundTripTable(expected, false)
> }
> {code}
> I've tried to trim down the input data and this is as minimal as I could get
> it. And yes:
> * wrapping struct with initial null is required
> * the inner list needs to contain 8 structs (or any multiple of 8)
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