[jboss-jira] [JBoss JIRA] (JGRP-1715) NullPointerException in MessageDispatcher.handleUpEvent
Pierantonio Cangianiello (JIRA)
jira-events at lists.jboss.org
Sat Oct 12 12:42:35 EDT 2013
[ https://issues.jboss.org/browse/JGRP-1715?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Pierantonio Cangianiello updated JGRP-1715:
-------------------------------------------
Description:
1) Node A starts and becomes master.
2) Node B starts and Node A crashes.
3) Before becoming the new master, Node B calls channel.getState()
4) NullPointer occurs
Stacktrace:
java.lang.NullPointerException
at java.io.ByteArrayInputStream.<init>(ByteArrayInputStream.java:106)
at org.jgroups.blocks.MessageDispatcher.handleUpEvent(MessageDispatcher.java:567)
at org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.up(MessageDispatcher.java:667)
at org.jgroups.JChannel.up(JChannel.java:643)
at org.jgroups.stack.ProtocolStack.up(ProtocolStack.java:1015)
at org.jgroups.protocols.Locking.up(Locking.java:269)
at org.jgroups.protocols.pbcast.STATE_TRANSFER.handleViewChange(STATE_TRANSFER.java:293)
at org.jgroups.protocols.pbcast.STATE_TRANSFER.up(STATE_TRANSFER.java:168)
at org.jgroups.protocols.RSVP.up(RSVP.java:187)
at org.jgroups.protocols.FRAG2.up(FRAG2.java:165)
at org.jgroups.protocols.FlowControl.up(FlowControl.java:381)
at org.jgroups.protocols.FlowControl.up(FlowControl.java:381)
at org.jgroups.protocols.pbcast.GMS.castViewChange(GMS.java:574)
at org.jgroups.protocols.pbcast.CoordGmsImpl.handleMembershipChange(CoordGmsImpl.java:219)
at org.jgroups.protocols.pbcast.GMS$ViewHandler.process(GMS.java:1633)
at org.jgroups.protocols.pbcast.GMS$ViewHandler.run(GMS.java:1587)
at java.lang.Thread.run(Thread.java:724)
The issue seems to be related to this:
in STATE_TRANSFER, line 292-293:
Exception ex=new EOFException("state provider " + old_coord + " left");
up_prot.up(new Event(Event.GET_STATE_OK, new StateTransferResult(ex)));
(buffer field is not set on event object)
after, in MessageDispatcher 567:
ByteArrayInputStream input=new ByteArrayInputStream(result.getBuffer());
causes NullPointer, since result.getBuffer() returns null.
A null-check here should resolve this issue, or an empty buffer could be set in StateTransferResult class.
was:
1) Node A starts and becomes master.
2) Node B starts and Node A crashes.
3) Before becoming the new master, Node B calls channel.getState()
4) NullPointer occurs
Stacktrace:
java.lang.NullPointerException
at java.io.ByteArrayInputStream.<init>(ByteArrayInputStream.java:106)
at org.jgroups.blocks.MessageDispatcher.handleUpEvent(MessageDispatcher.java:567)
at org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.up(MessageDispatcher.java:667)
at org.jgroups.JChannel.up(JChannel.java:643)
at org.jgroups.stack.ProtocolStack.up(ProtocolStack.java:1015)
at org.jgroups.protocols.Locking.up(Locking.java:269)
at org.jgroups.protocols.pbcast.STATE_TRANSFER.handleViewChange(STATE_TRANSFER.java:293)
at org.jgroups.protocols.pbcast.STATE_TRANSFER.up(STATE_TRANSFER.java:168)
at org.jgroups.protocols.RSVP.up(RSVP.java:187)
at org.jgroups.protocols.FRAG2.up(FRAG2.java:165)
at org.jgroups.protocols.FlowControl.up(FlowControl.java:381)
at org.jgroups.protocols.FlowControl.up(FlowControl.java:381)
at org.jgroups.protocols.pbcast.GMS.castViewChange(GMS.java:574)
at org.jgroups.protocols.pbcast.CoordGmsImpl.handleMembershipChange(CoordGmsImpl.java:219)
at org.jgroups.protocols.pbcast.GMS$ViewHandler.process(GMS.java:1633)
at org.jgroups.protocols.pbcast.GMS$ViewHandler.run(GMS.java:1587)
at java.lang.Thread.run(Thread.java:724)
The issue seems to be related to this:
in STATE_TRANSFER, line 292-293:
Exception ex=new EOFException("state provider " + old_coord + " left");
up_prot.up(new Event(Event.GET_STATE_OK, new StateTransferResult(ex)));
(buffer field is not set on event object)
after, in MessageDispatcher 567:
ByteArrayInputStream input=new ByteArrayInputStream(result.getBuffer());
causes NullPointer, since result.getBuffer() returns null.
A null-check here should resolve this issue, or an empty buffer could be set in STATE_TRANSFER class.
> NullPointerException in MessageDispatcher.handleUpEvent
> -------------------------------------------------------
>
> Key: JGRP-1715
> URL: https://issues.jboss.org/browse/JGRP-1715
> Project: JGroups
> Issue Type: Bug
> Affects Versions: 3.4
> Environment: Windows 7 x64 - JDK 1.7.0_40
> Reporter: Pierantonio Cangianiello
> Assignee: Bela Ban
>
> 1) Node A starts and becomes master.
> 2) Node B starts and Node A crashes.
> 3) Before becoming the new master, Node B calls channel.getState()
> 4) NullPointer occurs
> Stacktrace:
> java.lang.NullPointerException
> at java.io.ByteArrayInputStream.<init>(ByteArrayInputStream.java:106)
> at org.jgroups.blocks.MessageDispatcher.handleUpEvent(MessageDispatcher.java:567)
> at org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.up(MessageDispatcher.java:667)
> at org.jgroups.JChannel.up(JChannel.java:643)
> at org.jgroups.stack.ProtocolStack.up(ProtocolStack.java:1015)
> at org.jgroups.protocols.Locking.up(Locking.java:269)
> at org.jgroups.protocols.pbcast.STATE_TRANSFER.handleViewChange(STATE_TRANSFER.java:293)
> at org.jgroups.protocols.pbcast.STATE_TRANSFER.up(STATE_TRANSFER.java:168)
> at org.jgroups.protocols.RSVP.up(RSVP.java:187)
> at org.jgroups.protocols.FRAG2.up(FRAG2.java:165)
> at org.jgroups.protocols.FlowControl.up(FlowControl.java:381)
> at org.jgroups.protocols.FlowControl.up(FlowControl.java:381)
> at org.jgroups.protocols.pbcast.GMS.castViewChange(GMS.java:574)
> at org.jgroups.protocols.pbcast.CoordGmsImpl.handleMembershipChange(CoordGmsImpl.java:219)
> at org.jgroups.protocols.pbcast.GMS$ViewHandler.process(GMS.java:1633)
> at org.jgroups.protocols.pbcast.GMS$ViewHandler.run(GMS.java:1587)
> at java.lang.Thread.run(Thread.java:724)
> The issue seems to be related to this:
> in STATE_TRANSFER, line 292-293:
> Exception ex=new EOFException("state provider " + old_coord + " left");
> up_prot.up(new Event(Event.GET_STATE_OK, new StateTransferResult(ex)));
> (buffer field is not set on event object)
> after, in MessageDispatcher 567:
> ByteArrayInputStream input=new ByteArrayInputStream(result.getBuffer());
> causes NullPointer, since result.getBuffer() returns null.
> A null-check here should resolve this issue, or an empty buffer could be set in StateTransferResult class.
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