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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hi,</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have 2 brokers clustered with each other. They are
load balanced by having a HA proxy before them.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Let us call the brokers as B1 and B2.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>The HAproxy is in the same machine as B1.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>The producer P1 and consumer C1 are on different machines.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>The model we are using is amq.direct and all the
messages are non persistent. All our messages are mandatory=true and immediate=false.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Initially we start the broker B1 alone. The broker B2
is down.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>We start P1 and C1. They are now connected to the broker B1.
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>We start C1 and then P1. after 3-4 seconds, we start B2.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>After B2 starts, We immediately crash B1. </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Now both P1 and C1 get connected to B2 and the test
continues till we stop all three.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Now, during the failover time we find message losses.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Is it expected or can we make sure that no message
gets lost.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Also, when will be channel.setReturnListener</span></font><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:black'> called ? </span></font></p>
<p class=MsoNormal><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";color:black'>Will it be
called when the message does not reach the queue from the exchange or when the
message does reach the consumer from the queue ?</span></font></p>
<p class=MsoNormal><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span></font></p>
<p class=MsoNormal><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span></font></p>
<p class=MsoNormal><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";color:black'>In the clustered
mode, exchanges are global across rabbitmq nodes .. are the queues also global
?</span></font></p>
<p class=MsoNormal><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";color:black'>Please clear us.
We are confused about the global nature of queues !! </span></font></p>
<p class=MsoNormal><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p style='line-height:9.75pt'><strong><b><font size=1 color="#0066cc" face=Verdana><span style='font-size:8.5pt;font-family:Verdana;color:#0066CC'>Thanks
and Regards,</span></font></b></strong></p>
<p style='line-height:9.75pt'><strong><b><font size=1 color="#0066cc" face=Verdana><span style='font-size:8.5pt;font-family:Verdana;color:#0066CC'>D.Radhakrishnan</span></font></b></strong><font size=1 color="#0066cc" face=Verdana><span style='font-size:8.5pt;font-family:
Verdana;color:#0066CC'><br>
</span></font><font size=1 color="#333333" face=Verdana><span style='font-size:
8.5pt;font-family:Verdana;color:#333333'>Trainee Engineer-Architecture</span></font></p>
<p style='margin-top:3.75pt;line-height:9.75pt'><b><font size=1 color="#0066cc" face=Verdana><span style='font-size:8.5pt;font-family:Verdana;color:#0066CC;
font-weight:bold'>IVY Comptech Private Limited</span></font></b><font size=1 color="#0066cc" face=Verdana><span style='font-size:8.5pt;font-family:Verdana;
color:#0066CC'><br>
</span></font><font size=1 color="#333333" face=Verdana><span style='font-size:
8.5pt;font-family:Verdana;color:#333333'>Cyber Spazio,Road No 2, Banjara Hills,
<br>
Hyderabad-500034, Andhra Pradesh. </span></font></p>
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