[jboss-dev-forums] [Design of Messaging on JBoss (Messaging/JBoss)] - Special paging state in JBM 1.4

[gaohoward]

Hi,

This is a question regarding to paging. A user has reported a broken ordering group case where the server crashes with the following status in the JBM_MSG_REF table:


  | ORD  PAGE_ORD
  | 1       NULL
  | 2       NULL
  | ....
  | 24     NULL
  | 25      25
  | 26      26
  | ...
  | 84      84
  | 85     NULL
  | 86     NULL
  | ...
  | 115   NULL
  | 

As you can see if such a table is reloaded back into the queue, the order will be broken. The strange thing is the NULL values of PAGE_ORD field occurrs not only at the leading part of the table, but also in the middle.

I don't how this case can happen and therefore cannot write a valid test case for that? 

Can you guys (Tim, clebert) help give some advice on that? 

Thanks


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