[jboss-dev-forums] [Design of Messaging on JBoss (Messaging/JBoss)] - Re: Status of LargeMessages work

[timfox]

"clebert.suconic at jboss.com" wrote : This is the status of my current work on MessageChunk and LargeMessages.
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  | It is committed on https://svn.jboss.org/repos/messaging/branches/Branch_Chunk_CRS2/ waiting revision before we add it to trunk. Branch_Chunk_CRS2 was just created today (r5188)
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  | I - I have added a method getPacketSize on the Packet interface. The abstract class is still returning (at this point at least) the DefaultPacketSize, but MessageSend, Chunk and Receive are calculating the packetSize accordingly.
  | With that the InVM transport will also work for big messages, and we can avoid extra unecessary buffer creations.
  | 

What does "packetSize" represent?

* As soon as we merge it on trunk, we could have all the packets implementing this. But this is not a really high priority.

anonymous wrote : 
  | II - I have added a new interface called ServerLargeMessage which will be implemented by each storage-manager we have. We have JournalServerLargeMessageImpl and NullStorageManager. The StorageManager will be responsible for the instantiation of this class.
  | 

Confusing name. The journal is a large message?

anonymous wrote : 
  | III - I have separated the reference counting of references and durable references on Messages (that fix on paging discussed on this thread: http://www.jboss.com/index.html?module=bb&op=viewtopic&t=144128)
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  | As soon as we remove the reference from the queue (ACKs) I decrement the refCount. I use that ref to delete large messages stored on files.
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How is this different to how it was before?

anonymous wrote : 
  | IV - Paging could page largeMessages also. (On that case I don't take the bodySize in consideration, as that will be stored outside of the memory).
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  | V - The ChunkSize is configured on the ConnectionFactory, and the default is 100k
  | 

For everyone's benefit could you explain what chunkSize represents, and how it differs (or not) from minLargeMessageSize?



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