Failure to close BinaryWriter leads to segfault

[simleo]

The following works fine:

from pydoop.mapreduce.binary_streams import BinaryWriter

with open("cmd_dump", "wb") as f:
    writer = BinaryWriter(f)
    writer.send(BinaryWriter.MAP_ITEM, b"k", b"v")
    writer.flush()
    writer.close()

print("foo")

If writer.close() is omitted, however, this code triggers a segfault (after printing "foo", so it probably happens when resources are freed). The segfault only happens when using Python 2 (in Python 3 we might also have a problem, but less noisy).

BinaryUpStreamAdapter has the same problem (unsurprisingly).