Joris Van den Bossche created ARROW-13654:
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Summary: [C++][Parquet] Appending a FileMetaData object to itselfs
explodes memory
Key: ARROW-13654
URL: https://issues.apache.org/jira/browse/ARROW-13654
Project: Apache Arrow
Issue Type: Bug
Components: C++, Parquet
Reporter: Joris Van den Bossche
Writing a tiny parquet file, to read in its metadata (to obtain a FileMetaData
object):
{code}
import pyarrow as pa
import pyarrow.parquet as pq
table = pa.table({'a': [1, 2, 3], 'b': [4, 5, 6]})
pq.write_table(table, "test_file_for_metadata.parquet")
metadata = pq.read_metadata("test_file_for_metadata.parquet")
metadata.append_row_groups(metadata)
{code}
The last line (appending the metadata object to itself) keeps running with
increasing memory usage (I killed the process when it was using 10 GB).
This is not something useful to do, but still I wouldn't expect it to blow up
(as one can accidentally do it; I was actually trying it in a attempt to create
a large FileMetaData object).
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