Spring cloud stream 2.0 and startOffset latest












2















While upgrading our app to spring boot 2.0.3 , we encoutered an issue with consuming messages and using startOffset: latest.

The scenario that we tested is as follows:




  1. deploy an app with consumer(topic = TEST_CHANNEL,group = kafka2_test) configured with startOffset: latest to pcf and increase the number of instances to 5.

  2. stop the app

  3. publish 40 messages to TEST_CHANNEL topic

  4. start the app


we can see that the app successfully assigns to the partitions ,however, some of the instances does not consume from the partitions that they are assigned to.

We also verified it by checking the lag for the group.

This scenario worked when using spring boot 1.5.10. It also worked when using spring boot 2.0.3 and not setting the startOffset: latest.



Note: this is not a new group , so offset suppose to be present for the consumer to use, and resetOffsets should not have any effect.



Is this an issue in spring boot 2.0.3?






spring-boot apache-kafka spring-cloud-stream spring-kafka







share|improve this question





























    2















    While upgrading our app to spring boot 2.0.3 , we encoutered an issue with consuming messages and using startOffset: latest.

    The scenario that we tested is as follows:




    1. deploy an app with consumer(topic = TEST_CHANNEL,group = kafka2_test) configured with startOffset: latest to pcf and increase the number of instances to 5.

    2. stop the app

    3. publish 40 messages to TEST_CHANNEL topic

    4. start the app


    we can see that the app successfully assigns to the partitions ,however, some of the instances does not consume from the partitions that they are assigned to.

    We also verified it by checking the lag for the group.

    This scenario worked when using spring boot 1.5.10. It also worked when using spring boot 2.0.3 and not setting the startOffset: latest.



    Note: this is not a new group , so offset suppose to be present for the consumer to use, and resetOffsets should not have any effect.



    Is this an issue in spring boot 2.0.3?






    spring-boot apache-kafka spring-cloud-stream spring-kafka







    share|improve this question



























      2












      2








      2








      While upgrading our app to spring boot 2.0.3 , we encoutered an issue with consuming messages and using startOffset: latest.

      The scenario that we tested is as follows:




      1. deploy an app with consumer(topic = TEST_CHANNEL,group = kafka2_test) configured with startOffset: latest to pcf and increase the number of instances to 5.

      2. stop the app

      3. publish 40 messages to TEST_CHANNEL topic

      4. start the app


      we can see that the app successfully assigns to the partitions ,however, some of the instances does not consume from the partitions that they are assigned to.

      We also verified it by checking the lag for the group.

      This scenario worked when using spring boot 1.5.10. It also worked when using spring boot 2.0.3 and not setting the startOffset: latest.



      Note: this is not a new group , so offset suppose to be present for the consumer to use, and resetOffsets should not have any effect.



      Is this an issue in spring boot 2.0.3?






      spring-boot apache-kafka spring-cloud-stream spring-kafka







      share|improve this question
















      While upgrading our app to spring boot 2.0.3 , we encoutered an issue with consuming messages and using startOffset: latest.

      The scenario that we tested is as follows:




      1. deploy an app with consumer(topic = TEST_CHANNEL,group = kafka2_test) configured with startOffset: latest to pcf and increase the number of instances to 5.

      2. stop the app

      3. publish 40 messages to TEST_CHANNEL topic

      4. start the app


      we can see that the app successfully assigns to the partitions ,however, some of the instances does not consume from the partitions that they are assigned to.

      We also verified it by checking the lag for the group.

      This scenario worked when using spring boot 1.5.10. It also worked when using spring boot 2.0.3 and not setting the startOffset: latest.



      Note: this is not a new group , so offset suppose to be present for the consumer to use, and resetOffsets should not have any effect.



      Is this an issue in spring boot 2.0.3?






      spring-boot apache-kafka spring-cloud-stream spring-kafka




      spring-boot apache-kafka spring-cloud-stream spring-kafka






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 25 '18 at 13:59









      yuval simhon

      343319




      343319










      asked Nov 25 '18 at 13:23









      Omri GelmanOmri Gelman

      284




      284
























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          not a new group ... and resetOffsets should not have any effect.




          resetOffsets is specifically designed to reset the offset for an existing group to the startOffset value.



          It was broken in the 1.3.x version of the binder (the version used by Boot 1.5.x) and had no effect.






          share|improve this answer























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            not a new group ... and resetOffsets should not have any effect.




            resetOffsets is specifically designed to reset the offset for an existing group to the startOffset value.



            It was broken in the 1.3.x version of the binder (the version used by Boot 1.5.x) and had no effect.






            share|improve this answer




























              1















              not a new group ... and resetOffsets should not have any effect.




              resetOffsets is specifically designed to reset the offset for an existing group to the startOffset value.



              It was broken in the 1.3.x version of the binder (the version used by Boot 1.5.x) and had no effect.






              share|improve this answer


























                1












                1








                1








                not a new group ... and resetOffsets should not have any effect.




                resetOffsets is specifically designed to reset the offset for an existing group to the startOffset value.



                It was broken in the 1.3.x version of the binder (the version used by Boot 1.5.x) and had no effect.






                share|improve this answer














                not a new group ... and resetOffsets should not have any effect.




                resetOffsets is specifically designed to reset the offset for an existing group to the startOffset value.



                It was broken in the 1.3.x version of the binder (the version used by Boot 1.5.x) and had no effect.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 25 '18 at 14:44









                Gary RussellGary Russell

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