Patch from Joe Eaton <jeaton@hostway.net>. His comments:
There is a silly bug in the fall-back dumbdbm.py database package in the
Python 1.5.2 standard distro. This bug causes any changes to an
existing item to generate a new key, even when the key already exists.
After many updates, the .dir file used by dumbdbm grows to a huge size,
and can cause filesystem problems.
Here is a simple .py script to give an example:
#!/usr/bin/env python
import shelve
S=shelve.open('Test')
for i in range (2000):
S['1'] = `i`
This simply replaces the item '1' 2000 times. A look at the file
Test.dir will show 2000 copies of the line
'1' (0, 4)
when just 1 is needed!
... simply remove the _addkey call to prevent extraneous keys from popping
in.
Should save diskspace for alot of people!
[amk] Eyeballing it, the patch looks correct to me, and it
*does* fix the problem.
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