[jboss-jira] [JBoss JIRA] (JGRP-1417) UNICAST2: switch from NakReceiverWindow to Table

[Bela Ban (JIRA)]

     [ https://issues.jboss.org/browse/JGRP-1417?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bela Ban updated JGRP-1417:
---------------------------

    Description: 
UNICAST2:
- The sender has an AckSenderWindow (without retransmission) and the receiver a NakReceiverWindow
- The receiver asks the sender for retransmission only if there's a gap
- Stability ensures that the sender doesn't keep messages around forever

Suggestions:
- Similar to NAKACK2, don't use a separate retransmitter for every member (window), but have just 1 retransmitter task scan the message tables and do retransmission
- Table<Message> can replace the NakReceiverWindow on the receiver side
- Wwe can probably also replace the sender's window with a Table<Message>


If we can do this, then we have 
- only 1 proven data structure (Table<Message>)
- not 1 retransmitter per window, but 1 for all the windows (saving space) !

Similar to https://issues.jboss.org/browse/JGRP-1396: use Table rather than NakReceiverWindow. Should be simple as Table offers almost the same interface as NRW.

  was:Similar to https://issues.jboss.org/browse/JGRP-1396: use Table rather than NakReceiverWindow. Should be simple as Table offers almost the same interface as NRW.


    
> UNICAST2: switch from NakReceiverWindow to Table
> ------------------------------------------------
>
>                 Key: JGRP-1417
>                 URL: https://issues.jboss.org/browse/JGRP-1417
>             Project: JGroups
>          Issue Type: Task
>            Reporter: Bela Ban
>            Assignee: Bela Ban
>             Fix For: 3.1
>
>
> UNICAST2:
> - The sender has an AckSenderWindow (without retransmission) and the receiver a NakReceiverWindow
> - The receiver asks the sender for retransmission only if there's a gap
> - Stability ensures that the sender doesn't keep messages around forever
> Suggestions:
> - Similar to NAKACK2, don't use a separate retransmitter for every member (window), but have just 1 retransmitter task scan the message tables and do retransmission
> - Table<Message> can replace the NakReceiverWindow on the receiver side
> - Wwe can probably also replace the sender's window with a Table<Message>
> If we can do this, then we have 
> - only 1 proven data structure (Table<Message>)
> - not 1 retransmitter per window, but 1 for all the windows (saving space) !
> Similar to https://issues.jboss.org/browse/JGRP-1396: use Table rather than NakReceiverWindow. Should be simple as Table offers almost the same interface as NRW.

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