[jboss-dev-forums] [JBoss Transactions Development] - Re: Remote txinflow: XID changes

[Tom Jenkinson]

Tom Jenkinson [http://community.jboss.org/people/tomjenkinson] created the discussion

"Re: Remote txinflow: XID changes"

To view the discussion, visit: http://community.jboss.org/message/634251#634251

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Just to confirm, the work related to compressing the EIS name down to an int by storing a mapping file is actually done and in the branch as it is work not strictly related to XID changes for distributed JTA but is a functional requirement so it made sense to get it in the next release.

Therefore, when I get back from paternity the following changes may be made:

1. We can get rid of the requirement for the transport to maintain the subordinate node name as a dynamic integer as there is now enough space in the bqual to put the node name as a string (assuming 64(bqual length) - 28(Uid) - 4(eis key)) 32 bytes is enough to store a remoting name. Of course, if we ever need to put something else in the bqual that will not be possible again.

2. I can see a place where it would be relatively straighforward to add the parents parent node identifier (jca.SubordinateAtomicAction). I will probably create a different class for this (distributedjta.SubordinateAtomicAction), this gets rid ofone of the other persistence points of the transport.

Both of these changes appear relatively trivial to make again but I wont destabilise branch before I leave (hopefully I wont destabilise it on return either).

I believe the transport will still need the initial persistence point, that is it needs to know (for outstanding transactions) which servers it has talked to so that it can call recover on them in the case of failure. This is optional and we can rely on timeout typically, unless timeout is not set...
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