[BUG] close() -> SIGSEGV

[raphaelauv]

ubuntu 20.04 , python 3.8

import aimrocks

db_options = dict(
    create_if_missing=True,
    paranoid_checks=False,
)

db_path = '/tmp/example_db2'
rocks_db = aimrocks.DB(db_path, aimrocks.Options(**db_options), read_only=False)

batch = aimrocks.WriteBatch()
batch.put(b'key_1', b'value_1')
batch.put(b'key_1', b'value_1')
...

rocks_db.write(batch)
rocks_db.close() # throw the error

rocks_db = aimrocks.DB(db_path, aimrocks.Options(**db_options), read_only=True)
rocks_db.get(b"key_1")
if __name__ == '__main__':
    pass

give

Process finished with exit code 139 (interrupted by signal 11: SIGSEGV)

[mahnerak]

Previously the right way of closing RocksDB was just deleting the instance (in C++).
If you del rocks_db it will close it.

But we plan to fix this in the future by having explicit close() call to release the resources.