Hi all,
I config my Sequoia testing environment as below:
one controller
one virtualdatabase
three hsql backends
Application use hibernate to insert record, with connection pooling
enabled.
I found some problems:
Problem 1:
1. start backends and controller; starts CLC
2. insert records through sequoia interface, say, 5 records
3. shutdown the 2nd backend hsql
4. insert records through sequoia interface(optional, do not affect the
result)
5. start the 2nd backend hsql
6. perform backup operation on 1st backend hsql
7. CLC wait there, while controller shows:
2007-07-20 01:05:36,359 INFO controller.RequestManager.orderbook Waiting
for pending writes to complete
2007-07-20 01:05:36,359 INFO controller.RequestManager.orderbook
Checkpoint disable localhost2-169.254.34.192:25322-20070720010536359+0800
was stored
2007-07-20 01:05:36,359 INFO controller.RequestManager.orderbook Disabling
backend localhost2, waiting for current transaction to complete on this
backend
2007-07-20 01:05:36,359 INFO controller.RequestManager.orderbook Resume
pending writes
and it stops here. Does anyone know how to solve it?
Case 2:
1. start backends, controller, CLC
2. insert records through sequoia interface
3. backup 1st backend hsql
4. shutdown 2nd backend hsql
5. disable 2nd backend hsql
6. insert some records through sequoia interface
7. start 2nd backend hsql
8. restore 2nd backend by the dump from step 3
8. enable 2nd backend hsql
9. I suppose after enable, the 2nd backend hsql will contain exactly the
same as 1st backend. But it turns out to be 2nd backend only contains the
data in the dump. the "enable" function does not synchronize the later
records.
I think step 6 (insert record) will always happen, even the backup and
restore are performed continuously. If after restore and enable, the data
in backends are not synchronized, it will cause problem. Anyone has any
idea about it? Or I have any operation not correct? Thank you!
Regards,
Benny
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