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  1. JGroups
  2. JGRP-1932

Race condition - MERGE2 with TUNNEL transport is not merging

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Details

    • Bug
    • Resolution: Done
    • Major
    • 3.6.4
    • 3.6.3
    • None

    Description

      When using TUNNEL transport with MERGE2 discovery protocol, cluster merge doesn't happen.

      Problem seems to be in MERGE2.FindSubgroupsTask.fetchViews() method, which returns immediately after sending multicast discovery request instead of waiting for reply(ies). This is in contradiction with its' contract: "Returns when either discovery_timeout ms have elapsed or more than 1 different view has been found".

      Different views are therefore not detected and MERGE event is not generated.

      Everything works fine when using MERGE3 discovery protocol instead.

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          is incorporated by

          Bug - A problem that impairs or prevents the functions of the product. WFLY-4674 Upgrade JGroups to 3.6.4.Final

          • Blocker - To be worked above all other priorities. This term is chosen when the severity of the issue is very high, has no workaround, or the effort for the change is comparatively low. Issues that may be very publicly visible and could generate significant media attention may also drive a higher priority.
          • Closed
          is related to

          Feature Request - Feature requests from customers and/or users WFLY-4724 Port SingletonTunnelTestCase from EAP6 to WildFly

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed

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            People

              rhn-engineering-bban Bela Ban
              thofman Tomas Hofman
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                Created:
                Updated:
                Resolved: