Do you think I should rely on "SENDING: Response ..." line as the broker's guarantee or should I enable producer flow control and trace ProducerAcks?
I thought producer flow control was more to do with "resource management" and broker would always send some sort of persistence guarantee even producer flow control is disabled. Is this accurate? Thanks for all this info Gary. -----Original Message----- From: Gary Tully [mailto:gary.tu...@gmail.com] Sent: 27 June 2011 15:45 To: users@activemq.apache.org Subject: Re: Tracing Broker to Producer Acks great. One thought, it may be that the network connector is not requesting a sync send. It trys to respect the original client but in the case of a transacted client this may be a problem as messages are send async and batched at commit time. Using a client side connection url parameter, jms.alwaysSyncSend=true would help validate if this is part of the problem as it would ensure each send is sync from the client. On 27 June 2011 15:03, Ozan Seymen <ozan.sey...@tdpg.com> wrote: > I am just interested in understanding when the broker assumed responsibility > for a specific message. I will use this trace information to go in a bit > deeper in my tests where I am loosing messages in some scenarios - like > http://activemq.2283324.n4.nabble.com/Message-loss-in-network-of-brokers-transactional-send-td3588714.html#a3602343. > > So basically I will repeat my tests with trace=true, pointpoint the exact > location where the message is dropped and try to understand whether broker is > killed before it assumed responsibility for it or not. If it hasn't assumed > responsibility, then I will need to do something on the client code to trap > that case (no need for a JIRA!). > > PS: These messages are all persistent and should not be lost. That's why I am > trying to trace "I've safely stored your message" response from broker to > producer. > > -----Original Message----- > From: Gary Tully [mailto:gary.tu...@gmail.com] > Sent: 27 June 2011 14:42 > To: users@activemq.apache.org > Subject: Re: Tracing Broker to Producer Acks > > That is a response to the send request with responseRequired=true, note the > correlationId = 13 which corresponds to the RECEIVED commandId=13. > So it confirms the receipt/store of the message. > > A producerAck, used for flow control would be a separate request. Is that > what you are interested in, producer flow control ? > > On 27 June 2011 14:24, Ozan Seymen <ozan.sey...@tdpg.com> wrote: >> Thanks for this Gary. >> >> Is it possible to quickly confirm whether the line starting with "SENDING" >> is the ack returned from broker to the producer please? >> >> 2011-06-27 14:15:33,352 | DEBUG | RECEIVED: ActiveMQTextMessage >> {commandId = 13, responseRequired = true, messageId = >> ID:HAM-NB-073-58760-634447809330389070-1:0:1:1:10, >> >> 2011-06-27 14:15:33,354 | DEBUG | DB.DC1 toPageIn: 200, Inflight: 0, >> pagedInMessages.size 0, enqueueCount: 20, dequeueCount: 0 | >> org.apache.activemq.broker.region.Queue | Queue:DB.DC1 >> >> 2011-06-27 14:15:33,356 | DEBUG | SI.DC1 toPageIn: 200, Inflight: 0, >> pagedInMessages.size 0, enqueueCount: 20, dequeueCount: 0 | >> org.apache.activemq.broker.region.Queue | Queue:SI.DC1 >> >> 2011-06-27 14:15:33,359 | DEBUG | Q.OUT.ToDC2.DC1 toPageIn: 190, >> Inflight: 0, pagedInMessages.size 0, enqueueCount: 20, dequeueCount: >> 0 >> | org.apache.activemq.broker.region.Queue | Queue:Q.OUT.ToDC2.DC1 >> >> 2011-06-27 14:15:33,359 | DEBUG | SENDING: Response {commandId = 0, >> responseRequired = false, correlationId = 13} | >> org.apache.activemq.transport.TransportLogger.Connection:2 | ActiveMQ >> Transport: tcp:///0:0:0:0:0:0:0:1:58759 >> >> >> -----Original Message----- >> From: Gary Tully [mailto:gary.tu...@gmail.com] >> Sent: 23 June 2011 17:45 >> To: users@activemq.apache.org >> Subject: Re: Tracing Broker to Producer Acks >> >> use trace=true on the brokerURL to see all commands, including the >> producerAck from the broker. >> see: http://activemq.apache.org/tcp-transport-reference.html >> >> On 17 June 2011 11:35, Ozan Seymen <ozan.sey...@tdpg.com> wrote: >>> Hi, >>> >>> Is there any way for me to trace acks sent from broker to producer? Are >>> there any configuration settings that I can set in log4j.properties? >>> >>> Regards, >>> Ozan >>> >>> ________________________________ >>> This e-mail and any attached files are intended for the named addressee >>> only. It contains information which may be confidential and legally >>> privileged and also protected by copyright. Unless you are the named >>> addressee (or authorised to receive for the addressee) you may not copy or >>> use it or disclose it to anyone else. If you received it in error please >>> notify the sender immediately and then delete it from your system. >>> >>> Please be advised that the views and opinions expressed in this e-mail may >>> not reflect the views and opinions of The Digital Property Group Limited or >>> any of its subsidiary companies. >>> >>> We make every effort to keep our network free from viruses. 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We reserve the right to monitor all e-mail >> communications. >> >> The Digital Property Group Limited is a Daily Mail and General Trust plc >> company. >> Registered Office: Northcliffe House, 2 Derry Street, London, W8 5TT. >> Registered in England & Wales No: 02290527 VAT no. 243571174 >> >> _____________________________________________________________________ >> _ This email has been scanned by the MessageLabs Email Security >> System. >> For more information please visit http://www.messagelabs.com/email >> _____________________________________________________________________ >> _ >> > > > > -- > http://fusesource.com > http://blog.garytully.com > > ______________________________________________________________________ > This email has been scanned by the MessageLabs Email Security System. > For more information please visit http://www.messagelabs.com/email > ______________________________________________________________________ > > This e-mail and any attached files are intended for the named addressee only. > It contains information which may be confidential and legally privileged and > also protected by copyright. Unless you are the named addressee (or > authorised to receive for the addressee) you may not copy or use it or > disclose it to anyone else. If you received it in error please notify the > sender immediately and then delete it from your system. > > Please be advised that the views and opinions expressed in this e-mail may > not reflect the views and opinions of The Digital Property Group Limited or > any of its subsidiary companies. > > We make every effort to keep our network free from viruses. However, you do > need to check this e-mail and any attachments to it for viruses as we can > take no responsibility for any computer virus which may be transferred by way > of this e-mail. We reserve the right to monitor all e-mail communications. > > The Digital Property Group Limited is a Daily Mail and General Trust plc > company. > Registered Office: Northcliffe House, 2 Derry Street, London, W8 5TT. > Registered in England & Wales No: 02290527 VAT no. 243571174 > > ______________________________________________________________________ > This email has been scanned by the MessageLabs Email Security System. > For more information please visit http://www.messagelabs.com/email > ______________________________________________________________________ > -- http://fusesource.com http://blog.garytully.com ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ This e-mail and any attached files are intended for the named addressee only. 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