Re: How to migrate Kafka Producer ?
Hi Piotr, Thank you for looking into this. Do you have an idea when next version (1.7.2) will be available ? Also, could you validate / invalidate the approach I proposed in the previous comment ? Edward Rojas wrote > Regarding the kafka producer I am just updating the job with the new > connector and removing the previous one and upgrading the job by using a > savepoint and the --allowNonRestoredState. > So far my tests with this option are successful. Is there any risk of using this approach and just ignore the state of the previous Producer ? Thanks again for your help. Edward -- Sent from: http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/
Re: How to migrate Kafka Producer ?
Hi Edward, Sorry for coming back so late (because of holiday season). You are unfortunately right. Our FlinkKafkaProducer should have been upgrade-able, but it is not. I have created a bug for this [1]. For the time being, until we fix the issue, you should be able to stick to 0.11 producer without noticeable negative effects. Our FlinkKafkaProducer011 has the same forward & backward compatibility as the universal FlinkKakfaProducer (The biggest change between two of them was just changing the naming convention), so you can use either of them with the same versions of Kafka brokers (0.10+). Piotrek [1] https://issues.apache.org/jira/browse/FLINK-11249 > On 18 Dec 2018, at 14:33, Edward Rojas wrote: > > Hi, > > I'm planning to migrate from kafka connector 0.11 to the new universal kafka > connector 1.0.0+ but I'm having some troubles. > > The kafka consumer seems to be compatible but when trying to migrate the > kafka producer I get an incompatibility error for the state migration. > It looks like the producer uses a list state of type > "NextTransactionalIdHint", but this class is specific for each Producer > (FlinkKafkaProducer011.NextTransactionalIdHint vs > FlinkKafkaProducer.NextTransactionalIdHint) and therefore the states are not > compatible. > > > I would like to know what is the recommended way to perform this kind of > migration without losing the state ? > > Thanks in advance, > Edward > > > > -- > Sent from: > http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/
Re: How to migrate Kafka Producer ?
Hi Dawid, Piotr, I see that for the kafka consumer base there are some migration tests here: https://github.com/apache/flink/blob/master/flink-connectors/flink-connector-kafka-base/src/test/java/org/apache/flink/streaming/connectors/kafka/FlinkKafkaConsumerBaseMigrationTest.java As the kafka consumer state is managed on the FlinkKafkaConsumerBase class I assumed this would cover also migration of connectors versions, but maybe I'm missing something (?) I performed some tests on my own and the migration of the kafka consumer connector worked. Regarding the kafka producer I am just updating the job with the new connector and removing the previous one and upgrading the job by using a savepoint and the --allowNonRestoredState. So far my tests with this option are successful. I appreciate any help here to clarify my understanding. Regards, Edward El mié., 19 dic. 2018 a las 10:28, Dawid Wysakowicz () escribió: > Hi Edward, > > AFAIK we do not support migrating state from one connector to another > one, which is in fact the case for kafka 0.11 and the "universal" one. > > You might try to use the project bravo[1] to migrate the state manually, > but unfortunately you have to understand the internals of both of the > connectors. I pull also Piotr to the thread, maybe he can provide more > straightforward workaround. > > Best, > > Dawid > > [1] https://github.com/king/bravo > > On 18/12/2018 14:33, Edward Rojas wrote: > > Hi, > > > > I'm planning to migrate from kafka connector 0.11 to the new universal > kafka > > connector 1.0.0+ but I'm having some troubles. > > > > The kafka consumer seems to be compatible but when trying to migrate the > > kafka producer I get an incompatibility error for the state migration. > > It looks like the producer uses a list state of type > > "NextTransactionalIdHint", but this class is specific for each Producer > > (FlinkKafkaProducer011.NextTransactionalIdHint vs > > FlinkKafkaProducer.NextTransactionalIdHint) and therefore the states are > not > > compatible. > > > > > > I would like to know what is the recommended way to perform this kind of > > migration without losing the state ? > > > > Thanks in advance, > > Edward > > > > > > > > -- > > Sent from: > http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/ > >
Re: How to migrate Kafka Producer ?
Hi Edward, AFAIK we do not support migrating state from one connector to another one, which is in fact the case for kafka 0.11 and the "universal" one. You might try to use the project bravo[1] to migrate the state manually, but unfortunately you have to understand the internals of both of the connectors. I pull also Piotr to the thread, maybe he can provide more straightforward workaround. Best, Dawid [1] https://github.com/king/bravo On 18/12/2018 14:33, Edward Rojas wrote: > Hi, > > I'm planning to migrate from kafka connector 0.11 to the new universal kafka > connector 1.0.0+ but I'm having some troubles. > > The kafka consumer seems to be compatible but when trying to migrate the > kafka producer I get an incompatibility error for the state migration. > It looks like the producer uses a list state of type > "NextTransactionalIdHint", but this class is specific for each Producer > (FlinkKafkaProducer011.NextTransactionalIdHint vs > FlinkKafkaProducer.NextTransactionalIdHint) and therefore the states are not > compatible. > > > I would like to know what is the recommended way to perform this kind of > migration without losing the state ? > > Thanks in advance, > Edward > > > > -- > Sent from: > http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/ signature.asc Description: OpenPGP digital signature
How to migrate Kafka Producer ?
Hi, I'm planning to migrate from kafka connector 0.11 to the new universal kafka connector 1.0.0+ but I'm having some troubles. The kafka consumer seems to be compatible but when trying to migrate the kafka producer I get an incompatibility error for the state migration. It looks like the producer uses a list state of type "NextTransactionalIdHint", but this class is specific for each Producer (FlinkKafkaProducer011.NextTransactionalIdHint vs FlinkKafkaProducer.NextTransactionalIdHint) and therefore the states are not compatible. I would like to know what is the recommended way to perform this kind of migration without losing the state ? Thanks in advance, Edward -- Sent from: http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/
