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  1. JBoss Enterprise Application Platform 4 and 5
  2. JBPAPP-7463 Upgrade JGroups to 2.6.22
  3. JBPAPP-9167

TCPPING: add new member addresses to initial_hosts dynamically

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    • Affects:
      Documentation (Ref Guide, User Guide, etc.), Release Notes
    • Release Notes Text:
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      The TCPPING configuration in JGroups had to define statically the list of all possible cluster members. Consequently, the cluster had to be restarted if a new member was added. The "max_dynamic_hosts" property has been added to TCPPING which defines the number of extra hosts to be added dynamically to the cluster without the need to restart the cluster. Therefore, it is now possible to add new members to the cluster when using TCPPING without requiring the cluster restart. The property default value is "0". Note that the new nodes need to be added statically to each node's configuration at the next restart of that node.
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      The TCPPING configuration in JGroups had to define statically the list of all possible cluster members. Consequently, the cluster had to be restarted if a new member was added. The "max_dynamic_hosts" property has been added to TCPPING which defines the number of extra hosts to be added dynamically to the cluster without the need to restart the cluster. Therefore, it is now possible to add new members to the cluster when using TCPPING without requiring the cluster restart. The property default value is "0". Note that the new nodes need to be added statically to each node's configuration at the next restart of that node.
    • Release Notes Docs Status:
      Documented as Feature Request
    • Docs QE Status:
      NEW

      Description

      When we have A,B and C listed in initial_hosts but later D and E join, and we have a partition

      {A,B,C}

      and

      {D,E}

      , when the partition heals later, we have no way of merging the 2 subgroups back into 1 because initial_hosts doesn't contain D or E.
      SOLUTION: dynamically add members not in initial_hosts to initial_hosts on view changes. Keep the number of dynamically added members bounded.

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            Sub-task - The sub-task of the issue JBPAPP-10010 TCPPING: add new member addresses to initial_hosts dynamically

            • Minor - Minor loss of function, or other problem where easy workaround is present.
            • Closed
            is blocked by

            Feature Request - A new feature of the product, which has yet to be developed. JGRP-989 TCPPING: add new member addresses to initial_hosts dynamically

            • Major - A request that should be considered seriously but is not a show stopper.
            • Resolved

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                • Assignee:
                  dereed Dennis Reed
                  Reporter:
                  dereed Dennis Reed
                  Writer:
                  Eva Kopalova
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                  Dates

                  • Created:
                    Updated:
                    Resolved: