Hi, Thanks for your prompt reply. Consumers have different group.id in our case, as we just need all the data in the topic, so every time the application starts, the consumer will be in a new group. For current testing environment, we just one partition for one topic. though we have tried with multiple partitions, and situation happened as well.
On Tue, Dec 10, 2019 at 3:56 PM Matthias J. Sax <[email protected]> wrote: > Are both consumers in the same consumer group, ie, use the same `group.id > `? > > If yes, how many partitions does the topic have? If it has only one > partition, the observed behavior is expected, because a single > partitions can only be read by a single consumer instance per consumer > group. The second consumer won't have any assigned partitions to read from. > > -Matthias > > On 12/9/19 11:12 PM, Frank Zhou wrote: > > Hi, > > > > I am quite new to Kafka, and I have encountered a weird case during QA > > stage for our application. Now we have 2 consumers consuming same topic > > in kafka cluster. The first started consumer works fine and get closed > > after getting all the messages. After that, the second one started and > > just hang there in the poll(), which we set the Duration to 10 seconds, > > and will quit the loop if no records are fetched. From kafka server log, > > I don't see warning or error for the second consumer. > > > > Attached client/server log related to both consumers. I am using 2.3.1 > > client, 2.2.2 kafka servers. Looking forward to you feedback. > > > > > > Best regards, > > -- > > *Frank Zhou* > > R&D, Itiviti > > Java Developer > > D +852 2521 7480 > > [email protected] <mailto:[email protected]> > > > > ______________________________ > > > > itiviti.com <https://www.itiviti.com/> > > > > /The information contained in or attached to this email is strictly > > confidential. If you are not the intended recipient, please notify us > > immediately by telephone and return the message to us./ > > > > /Email communications by definition contain personal information. The > > Itiviti group of companies is subject to European data protection > > regulations. Itiviti’s Privacy Notice is available at www.itiviti.com > > <http://www.itiviti.com/>. Itiviti expects the recipient of this email > > to be compliant with Itiviti’s Privacy Notice and applicable > > regulations. Please advise us immediately at > > [email protected] if you are not compliant with these./ > > > > > > ______________________________ > > > > itiviti.com <https://www.itiviti.com/> > > <https://www.linkedin.com/company/itiviti> ^Follow Itiviti on Linkedin > > <https://www.linkedin.com/company/10438325/> > > > > The information contained in or attached to this email is strictly > > confidential. If you are not the intended recipient, please notify us > > immediately by telephone and return the message to us. Email > > communications by definition contain personal information. The Itiviti > > group of companies is subject to European data protection regulations. > > > > Itiviti’s Privacy Notice is available at www.itiviti.com > > <http://www.itiviti.com/>. Itiviti expects the recipient of this email > > to be compliant with Itiviti’s Privacy Notice and applicable > > regulations. Please advise us immediately at > > [email protected] if you are not compliant with these. > > > > -- *Frank Zhou* R&D, Itiviti Java Developer D +852 2521 7480 [email protected] ______________________________ itiviti.com <https://www.itiviti.com/> *The information contained in or attached to this email is strictly confidential. If you are not the intended recipient, please notify us immediately by telephone and return the message to us.* *Email communications by definition contain personal information. The Itiviti group of companies is subject to European data protection regulations. Itiviti’s Privacy Notice is available at www.itiviti.com <http://www.itiviti.com/>. Itiviti expects the recipient of this email to be compliant with Itiviti’s Privacy Notice and applicable regulations. Please advise us immediately at [email protected] if you are not compliant with these.* -- ______________________________ itiviti.com <https://www.itiviti.com/> <https://www.linkedin.com/company/itiviti> Follow Itiviti on Linkedin <https://www.linkedin.com/company/10438325/> The information contained in or attached to this email is strictly confidential. If you are not the intended recipient, please notify us immediately by telephone and return the message to us. Email communications by definition contain personal information. The Itiviti group of companies is subject to European data protection regulations. Itiviti’s Privacy Notice is available at www.itiviti.com <http://www.itiviti.com/>. Itiviti expects the recipient of this email to be compliant with Itiviti’s Privacy Notice and applicable regulations. Please advise us immediately at [email protected] if you are not compliant with these.
