I've since found and fixed the root cause of this issue. There was a bug
in TxnManagerImpl.java that stopped it from aborting a transaction when
it is canceled while active. Once I fixed that, all the failing
javaspace tests started working.
Patricia
Gregg Wonderly wrote:
Is there logging or other variably present software paths that may
have inadvertently done toString or something else which made a
remote callto the lease object and could cause the test to work in
such cases?
Sent from my iPhone
On Oct 27, 2010, at 5:02 PM, Patricia Shanahan <[email protected]> wrote:
Test
com/sun/jini/test/impl/outrigger/leasing/UseTxnMgrSpaceLeaseTest.td
complains because a JavaSpace lets it go on using a Transaction for
writes after the Transaction's lease has expired.
The JavaSpace implementation,
com.sun.jini.outrigger.OutriggerServerImpl joins and caches the
Transaction the first time it is asked to do an operation with it.
It does not repeat the join, or any other Transaction operation,
when doing another write for a Transaction is has already joined,
so it does not find out about the Transaction's lease termination.
I have tentatively reached the conclusion that the Outrigger
implementation is reasonable. If the JavaSpace caller wants to know
whether the transaction is still active, the caller can itself do a
getState() test. There is no reason to force the equivalent of a
getState() at each JavaSpace write for the transaction.
In normal use, the caller will issue a limited number of operations
associated with the transaction, and then do a commit or abort. The
lease should be long enough that there is a high probability of
finishing those operations within the lease time. At the time of
the commit or abort, it will get an UnknownTransactionException if
the transaction has been discarded due to lease expiration. The
caller cannot be sure the operations will take effect until a
successful commit.
I think the failing test requires something that is neither
specified nor logically necessary, and propose deleting it from the
test program.
Any opinions?
Patricia
