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  1. JGroups
  2. JGRP-1509

GMS: low leave_timeout may cause incorrect view installation

    Details

    • Type: Bug
    • Status: Resolved (View Workflow)
    • Priority: Major
    • Resolution: Done
    • Affects Version/s: None
    • Fix Version/s: 3.2
    • Labels:
      None

      Description

      • {A}
      • B joins, then C, the view is A2= {A,B,C}
        - No messages are sent
        - GMS.leave_timeout=100
        - NAKACK2.xmit_interval=1000
        - A leaves gracefully (JChannel.disconnect())
        - A multicasts B3={B,C}, the seqno is #3
        - B discarded A#2 (view {A,B,C}

        ), as it was not yet server

      • B now asks A for retransmission of #2 before it can deliver #3 (the new view)
        (- The retransmission kicks in ca. every 1 sec)
      • However, A is gone, so C will loop asking A to retransmit #3 and will therefore never install view B2 !

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                • Assignee:
                  belaban Bela Ban
                  Reporter:
                  belaban Bela Ban
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                  Dates

                  • Created:
                    Updated:
                    Resolved: