mBaratta96 opened a new issue #9679:
URL: https://github.com/apache/arrow/issues/9679
Hello,
as you can see in the code below, I'm having torubles adding new rows to a
Table saved in a memory mapped file.
I just want to write the file again with the new rows.
```python
source = pa.memory_map(path, 'r')
table = pa.ipc.RecordBatchFileReader(source).read_all()
schema = pa.ipc.RecordBatchFileReader(source).schema
new_table = create_arrow_table(schema.names) #new table from pydict with
same schema and random new values
updated_table = pa.concat_tables([pa.Table.from_pandas(table),
new_table], promote=True)
source.close()
with pa.MemoryMappedFile(path, 'w') as sink:
with pa.RecordBatchFileWriter(sink, updated_table.schema) as writer:
writer.write_table(table)
```
I get an Exception stating that the memory mapped file is not closed.
Any suggestion?
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