[jboss-jira] [JBoss JIRA] (JGRP-1915) JDBC_PING discovery fails when stale entries are found in the database

[Patrick Haas (JIRA)]

Patrick Haas created JGRP-1915:
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             Summary: JDBC_PING discovery fails when stale entries are found in the database
                 Key: JGRP-1915
                 URL: https://issues.jboss.org/browse/JGRP-1915
             Project: JGroups
          Issue Type: Bug
    Affects Versions: 3.6.1
            Reporter: Patrick Haas
            Assignee: Bela Ban


Node: "CHQ-PATRICKH-55008"
Database contains two rows.. other node is dead but was unable to remove the JDBC entry.

1) JChannel.connect(...)
2) JChannel.down(Event[CONNECT_WITH_STATE_TRANSFER_USE_FLUSH])
3) STATE_TRANSFER -> FRAG2 -> MFC -> UFC -> GMS
4) GMS.down(...) calls out to joinWithStateTransfer -> joinInternal(...)

JDBC pulls the node list from the database table.

Ping Data:
 - CHQ-PATRICKH-3895, name=CHQ-PATRICKH-3895, addr=10.1.130.228:55503, server
 - CHQ-PATRICKH-55008, name=CHQ-PATRICKH-55008, addr=10.1.130.228:57489


joinInternal is a never-terminating while loop:
 - down: Event.FIND_INITIAL_MBRS_EVT
 - inspect responses -- no valid join responses
 - responses are NOT empty -> does not become singletonMember
 - gets all coordinators (none)
 - Sorts all nodes by GUID in a TreeSet
 - Is first of all joiners?
  - No, another joiner is listed first

... repeat forever


When the process is restarted and a node ID < than the existing db entry is generated, it successfully takes over as owner.




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