Massive memory leak

Hello,

I am seeing a massive memory leak in xappy, but I'm having trouble
pinning it down exactly.

Some background: I'm using xappy to index my email and store useful
headers for quick access.

In the program I'm developing I will open a new search connection,
perform a query, copy all the header information into a custom
container class, and then close the search connection. I have found
that as I keep performing these operations my program continues to use
more and more ram, and never releases anything.

Here's a really simple example that makes the problem obvious:
import pdb
import xappy
from overwatch import xapidx
from databasics import msg_factory
sconn = xappy.SearchConnection(xapidx)
r = sconn.search(sconn.query_all(), 0, 99999999, checkatleast= -1,
sortby= '-sent')
r = map(msg_factory, r)
del r
del sconn
pdb.set_trace()

msg_factory is just a factory function that returns a named tuple that
contains all the header information contained in the ProcessedDocument
it gets.

Running that script on my machine and running `ps aux` when it starts
pdb I see that the script is using 128568k, or ~125megs of ram. Now,
correct me if I'm wrong, but since I've deleted all objects, shouldn't
the only things using up memory still be the python interpreter, and
everything I imported?

 I'm using the latest xappy from trunk and xapian 1.0.17.

Any idea how to fix this?

Dominic

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