[ZCM] [ZC] 1505/ 1 Request "OOBTree won't allow more than ~1700 items"

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Issue #1505 Update (Request) "OOBTree won't allow more than ~1700 items"
 Status Pending, Database/bug critical
To followup, visit:
  http://collector.zope.org/Zope/1505

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= Request - Entry #1 by mscott on Sep 22, 2004 4:09 pm


Uploaded:  "zodbfailure.py"
 - http://collector.zope.org/Zope/1505/zodbfailure.py/view
When using OOBTree to store a dictionary whose keys are objects and values are integers, I am running into a problem where after about ~1700 objects are stored, the OOBTree has problems finding objects in the collection.  The following successes and failures are what I got from running the attached zodbfailure.py program.

 Testing ZODB version 3.3c1
 with Python version 2.3.4 (#2, Sep 18 2004, 09:58:43)
 [GCC 3.3.4 (Debian 1:3.3.4-11)]
 
 Trying <class 'persistent.mapping.PersistentMapping'>
 0 500 1000 1500 2000 2500 3000 
 
 
 -----------------------------------------------------------------
 
 
 Testing ZODB version 3.3c1
 with Python version 2.3.4 (#2, Sep 18 2004, 09:58:43)
 [GCC 3.3.4 (Debian 1:3.3.4-11)]
 
 Trying <type 'BTrees._OOBTree.OOBTree'>
 0 500 1000 1500
 *** FAILURE AT 1728 ***
 Traceback (most recent call last):
   File "zodbfailure.py", line 63, in ?
     runTest(root, MappingClass)
   File "zodbfailure.py", line 39, in runTest
     assert(d[x] == num)
 KeyError: <__main__.X object at 0x4042d32c>
 
 
 -----------------------------------------------------------------
 
 
 Testing ZODB version 3.3c1
 with Python version 2.3.4 (#53, May 25 2004, 21:17:02) 
 [MSC v.1200 32 bit (Intel)]
 
 Trying <class 'persistent.mapping.PersistentMapping'>
 0 500 1000 1500 2000 2500 3000
 
 
 -----------------------------------------------------------------
 
 
 Testing ZODB version 3.3c1
 with Python version 2.3.4 (#53, May 25 2004, 21:17:02) 
 [MSC v.1200 32 bit (Intel)]
 
 Trying <type 'BTrees._OOBTree.OOBTree'>
 0 500 1000 1500
 *** FAILURE AT 1782 ***
 Traceback (most recent call last):
   File "zodbfailure.py", line 63, in ?
     runTest(root, MappingClass)
   File "zodbfailure.py", line 39, in runTest
     assert(d[x] == num)
 KeyError: <__main__.X object at 0x00AA4AB0> 

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