Bug 808537

Summary: JGroups sender window not found
Product: [JBoss] JBoss Data Grid 6 Reporter: Michal Linhard <mlinhard>
Component: unspecifiedAssignee: Tristan Tarrant <ttarrant>
Status: CLOSED NOTABUG QA Contact: Michal Linhard <mlinhard>
Severity: high Docs Contact:
Priority: high    
Version: 6.0.0CC: jdg-bugs, mhusnain, nobody
Target Milestone: ---   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
When nodes leave the cluster, JGroups may log the following messages: "sender window for nodeXXX/default not found". This message is harmless and can be safely ignored.
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-04-20 12:44:18 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description Michal Linhard 2012-03-30 16:15:43 UTC
Elasticity tests 4 nodes, dist mode:
http://www.qa.jboss.com/~mlinhard/hyperion/run44-elas-dist/

node 2: (lots of these)
05:31:11,206 SEVERE [org.jgroups.protocols.UNICAST2] (undefined) node0002/default: sender window for node0003/default not found
node 3: (two of these)
05:32:33,060 SEVERE [org.jgroups.protocols.UNICAST2] (undefined) node0003/default: sender window for node0004/default not found
node 4: (lots of these)
05:31:18,099 SEVERE [org.jgroups.protocols.UNICAST2] (undefined) node0004/default: sender window for node0003/default not found

I'm not sure whether this is Infinispan or JGroups bug.

Comment 1 Tristan Tarrant 2012-04-03 07:18:40 UTC
From Bela:


 A sends a unicast to B
 seqno=3
 However, B doesn't have a connection from A and cannot accept seqno=3, it needs to have seqno=1 first
 So B asks A to send the lowest seqno (1)
 A now gets this request, but B has crashed of left in the meantime
So A doesn't find the connection window for B and hence the warning
 This *should* not affect the rest of the system, all you see are some nasty error messages in the log

Comment 2 Tristan Tarrant 2012-04-04 12:25:58 UTC
    Technical note added. If any revisions are required, please edit the "Technical Notes" field
    accordingly. All revisions will be proofread by the Engineering Content Services team.
    
    New Contents:
When nodes are leaving, sometimes JGroups will log the following messages: "sender window for nodeXXXX/default not found". These are harmless and can be ignored

Comment 3 Misha H. Ali 2012-04-04 15:49:35 UTC
    Technical note updated. If any revisions are required, please edit the "Technical Notes" field
    accordingly. All revisions will be proofread by the Engineering Content Services team.
    
    Diffed Contents:
@@ -1 +1 @@
-When nodes are leaving, sometimes JGroups will log the following messages: "sender window for nodeXXXX/default not found". These are harmless and can be ignored+When nodes leave the cluster, JGroups may log the following messages: "sender window for nodeXXX/default not found". This message is harmless and can be safely ignored.