[ZODB-Dev] [ZEO] Storage error with big transactions.

[Andreas Jung]

I have the following script to emulate a long running writing ZEO client
by writing 100MB to a page template:

import transaction

pt = app.foo
while 1:
    data = '*'*100000000
    T = transaction.begin()
    pt.pt_edit(data, 'text/html')
    T.commit()
    print 'done'

This script fails badly during during the first commit() call. Is this a bug
or feature? I am using Zope 2.10.2 on MacOSX Intel.

Andreas

------------


suxmac2:~/sandboxes/zeo-test ajung$ bin/zopectl run test.py
2007-02-12 18:18:18 CRITICAL txn.-1610559552 A storage error occurred 
during the second phase of the two-phase commit.  Resources may be in an 
inconsistent state.
Traceback (most recent call last):
  File "<string>", line 1, in ?
  File "test.py", line 8, in ?
    T.commit()
  File "/opt/zope/2.10.2/lib/python/transaction/_transaction.py", line 395, 
in commit
    self._commitResources()
  File "/opt/zope/2.10.2/lib/python/transaction/_transaction.py", line 503, 
in _commitResources
    rm.tpc_finish(self)
  File "/opt/zope/2.10.2/lib/python/ZODB/Connection.py", line 696, in 
tpc_finish
    self._storage.tpc_finish(transaction, callback)
  File "/opt/zope/2.10.2/lib/python/ZEO/ClientStorage.py", line 955, in 
tpc_finish
    self._update_cache(tid)
  File "/opt/zope/2.10.2/lib/python/ZEO/ClientStorage.py", line 980, in 
_update_cache
    self._cache.invalidate(oid, version, tid)
  File "/opt/zope/2.10.2/lib/python/ZEO/cache.py", line 375, in invalidate
    assert o is not None
AssertionError
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