[jboss-jira] [JBoss JIRA] (JGRP-1846) RELAY2: delay shutting down bridge

[Dan Berindei (JIRA)]

Dan Berindei created JGRP-1846:
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             Summary: RELAY2: delay shutting down bridge
                 Key: JGRP-1846
                 URL: https://issues.jboss.org/browse/JGRP-1846
             Project: JGroups
          Issue Type: Bug
    Affects Versions: 3.5
            Reporter: Dan Berindei
            Assignee: Bela Ban


A simple test that starts 2 sites x 2 nodes each and shuts them down in order shows a 1 second delay when shutting down the last node in the first site (B):

    public void testCoordinatorShutdown() throws Exception {
       a=createNode(LON, "A", LON_CLUSTER, null);
       b=createNode(LON, "B", LON_CLUSTER, null);
       x=createNode(SFO, "X", SFO_CLUSTER, null);
       y=createNode(SFO, "Y", SFO_CLUSTER, null);
       Util.waitUntilAllChannelsHaveSameSize(10000, 100, a, b);
       Util.waitUntilAllChannelsHaveSameSize(10000, 100, x, y);
       waitForBridgeView(2, 20000, 100, a, x);

       a.close();
       Util.waitUntilAllChannelsHaveSameSize(10000, 100, b);

       b.close();
       waitForBridgeView(1, 20000, 100, x);

       x.close();

       y.close();
    }

And the relevant logs:

13:51:30,017 DEBUG (Timer-2,sfo-cluster,X:) [GMS] _X:sfo: installing view [_A:lon|1] (2) [_A:lon, _X:sfo]
13:51:30,028 DEBUG (Incoming-2,global,_X:sfo:) [GMS] _X:sfo: installing view [_X:sfo|2] (1) [_X:sfo]
13:51:30,046 TRACE (Timer-2,lon-cluster,B:) [SHARED_LOOPBACK] _B:lon: sending msg to _X:sfo, src=_B:lon, headers are GMS: GmsHeader[JOIN_REQ]: mbr=_B:lon, UNICAST3: DATA, seqno=1, first, SHARED_LOOPBACK: [cluster_name=global]
13:51:31,046 TRACE (Timer-2,global,_B:lon:) [SHARED_LOOPBACK] _B:lon: sending msg to _X:sfo, src=_B:lon, headers are GMS: GmsHeader[JOIN_REQ]: mbr=_B:lon, UNICAST3: DATA, seqno=1, first, SHARED_LOOPBACK: [cluster_name=global]
13:51:31,099 DEBUG (Incoming-2,global,_X:sfo:) [GMS] _X:sfo: installing view [_X:sfo|3] (2) [_X:sfo, _B:lon]

Note that while this happens on a background timer thread, the shutdown is delayed nonetheless because {{TP.destroy()}} waits at least 500ms for all the timer threads to finish ({{TimeScheduler3.stopRunning()}}. Perhaps that should change as well, so that timer threads are interrupted and finish immediately.



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