[jboss-jira] [JBoss JIRA] (JGRP-1443) Null pointer exception testing proposed fix for JGRP-1426
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https://issues.jboss.org/browse/JGRP-1443?page=com.atlassian.jira.plugin....
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David Hotham reopened JGRP-1443:
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Per remarks in JGRP-1426, I've hit this NPE:
- with and without the 1426 fix
- with and without FLUSH being in the stack
So I'm reopening it: I think we should view it as an independent bug.
I'm currently using 3.1.0.Beta1, with a stack that goes:
TCP
TCPPING
MERGE3
FD_SOCK
FD
NACKACK2
UNICAST2
STABLE
SEQUENCER
GMS
UFC
MFC
FRAG2
I don't have a test script that reproduces this without FLUSH being in the stack.
However I am able to hit it live reasonably reliably, by having a cluster of four members
and killing two of them (not the coordinator) as close together as I can.
I can try to work on a scripted repro if necessary. Let me know if you need me to do
that.
Null pointer exception testing proposed fix for JGRP-1426
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Key: JGRP-1443
URL: https://issues.jboss.org/browse/JGRP-1443
Project: JGroups
Issue Type: Bug
Affects Versions: 3.0.8
Reporter: David Hotham
Assignee: Bela Ban
Fix For: 3.1
Attachments: jgroups-3.0.9.Final.jar
Per email exchange: testing a proposed fix for JGRP-1426, I hit the following exception:
SEVERE: failed sending message to 10.239.0.5 (185 bytes):
java.lang.NullPointerException, cause: null
java.lang.NullPointerException
at org.jgroups.protocols.pbcast.JoinRsp.writeTo(JoinRsp.java:90)
at org.jgroups.util.Util.writeStreamable(Util.java:934)
at org.jgroups.protocols.pbcast.GMS$GmsHeader.writeTo(GMS.java:1155)
at org.jgroups.Message.writeHeader(Message.java:891)
at org.jgroups.Message.writeTo(Message.java:698)
at org.jgroups.protocols.TP.writeMessage(TP.java:1367)
at org.jgroups.protocols.TP.send(TP.java:1279)
at org.jgroups.protocols.TP.down(TP.java:1138)
at org.jgroups.protocols.Discovery.down(Discovery.java:573)
at org.jgroups.protocols.TCPPING.down(TCPPING.java:108)
at org.jgroups.protocols.MERGE3.down(MERGE3.java:242)
at org.jgroups.protocols.FD.down(FD.java:308)
at org.jgroups.protocols.VERIFY_SUSPECT.down(VERIFY_SUSPECT.java:80)
at org.jgroups.protocols.pbcast.NAKACK2.down(NAKACK2.java:493)
at org.jgroups.protocols.UNICAST2.down(UNICAST2.java:502)
at org.jgroups.protocols.pbcast.STABLE.down(STABLE.java:328)
at org.jgroups.protocols.pbcast.GMS.sendJoinResponse(GMS.java:543)
at
org.jgroups.protocols.pbcast.CoordGmsImpl.handleMembershipChange(CoordGmsImpl.java:156)
at org.jgroups.protocols.pbcast.GMS$ViewHandler.process(GMS.java:1390)
at org.jgroups.protocols.pbcast.GMS$ViewHandler.run(GMS.java:1344)
at java.lang.Thread.run(Thread.java:662)
You said:
{quote}
ah, ok, this is a change I made recently, to reduce the size of digests.
Can you open a JIRA so we can track this ?
I'll fix it this week.
{quote}
... so here we are.
Thanks!
David
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