asfimport opened a new issue, #96:
URL: https://github.com/apache/arrow-js/issues/96
After reading an arrow table from disk and concatenating another arrow
table, this concatenated table loses it's last concatenated chunk after
serializing to disk.
Steps to reproduce:
```java
// helper that creates a vector to make the below more succinct
function createSomeVectors(){ return [
FloatVector.from(Float32Array.from([1]))] }
// CORRECT
// Create tables T1 + T2. Each contain 1 vector with 1 value
const T1 = Table.new(createSomeVectors(), ['value'])
const T2 = Table.new(createSomeVectors(), ['value'])
// Combine these tables
const combined = T1.concat(T2)
// Serialize and read back this combination (mimic saving and reading from
disk)
const combinedAfterSerialization = Table.from([combined.serialize()])
// Print the count (works correctly)
console.log(T1.count(), T2.count(), combined.count(),
combinedAfterSerialization.count())
// Result (as expected)= 2, 2, 2, 2
// INCORRECT
// Serialize T1 and read back. (mimic saving and reading from disk)
const T1SerializedAndBack = Table.from([T1.serialize()])
// Combine just read T1SerializedAndBack with T2
const combined2 = T1SerializedAndBack.concat(T2)
// Serialize and read back this combination (mimic saving and reading from
disk)
const combinedAfterSerialization2 = Table.from([combined2.serialize()])
// Print the count (works Incorrectly)
console.log(T1SerializedAndBack.count(), T2.count(), combined2.count(),
combinedAfterSerialization2.count())
// Result (NOT as expected)= 2, 2, 2, 1 <=!!
```
**Reporter**: [geert-jan
brits](https://issues.apache.org/jira/browse/ARROW-15086)
<sub>**Note**: *This issue was originally created as
[ARROW-15086](https://issues.apache.org/jira/browse/ARROW-15086). Please see
the [migration documentation](https://github.com/apache/arrow/issues/14542) for
further details.*</sub>
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