loredanacirstea opened a new issue #10187:
URL: https://github.com/apache/arrow/issues/10187
After concatenating two tables, their row indexes are not recalculated. This
is counter intuitive, so I suspect it is a bug. In the example below I would
have expected that "name1" row has index 0 and "name2" row has index 1. Now,
they both have rowIndex 0, hence the index given by scan has no utility.
```
const AType = new Struct([Field.new({ name: "name", type: new Utf8() })])
const table1 = Table.from({
type: AType,
values: [{name:"name1"}]
})
const table2 = Table.from({
type: AType,
values: [{name:"name2"}]
})
const table3 = table1.concat(table2);
// 0 0
console.log(table3.get(0)[Symbol.for('rowIndex')],
table3.get(1)[Symbol.for('rowIndex')])
table3.filter(predicate.col('name').eq('name2')).scan((idx, batch) => {
// 0 Row {name: "name1", Symbol(rowIndex): 0, 0: "name1"}
console.log('idx', idx, table3.get(idx));
})
```
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