Sachin,
you have this line:
> builder.stream(Serdes.String(), serde, "advice-stream")
Could the problem be that not the record values are causing the problem --
because your value deserializer does try-catch any such errors -- but that
the record *keys* are malformed? The built-in `Serdes.String()` does not
try-catch deserialization errors, and from a quick look at the source it
seems that the `Fetcher` class
(clients/src/main/java/org/apache/kafka/clients/consumer/internals/Fetcher.java)
is throwing your error above ("Error deserializing key/value for
partition..."), and the Fetcher is swallowing the more specific
SerializationException of `String.Serdes()` (but it will include the
original exception/Throwable in its own SerializationException).
-Michael
On Thu, Mar 30, 2017 at 2:52 PM, Sachin Mittal <sjmit...@gmail.com> wrote:
> My streams application does run in debug mode only.
> Also I have checked the code around these lines
>
> at org.apache.kafka.common.utils.Utils.sizeDelimited(Utils.java:791)
> ~[kafka-clients-0.10.2.0.jar:na]
> at org.apache.kafka.common.record.Record.value(Record.java:268)
> ~[kafka-clients-0.10.2.0.jar:na]
> at org.apache.kafka.clients.consumer.internals.Fetcher.
> parseRecord(Fetcher.java:867)
> ~[kafka-clients-0.10.2.0.jar:na]
>
> I don't see any log statement which will give me more information.
>
> https://github.com/apache/kafka/blob/0.10.2/clients/src/
> main/java/org/apache/kafka/clients/consumer/internals/Fetcher.java#L867
>
> The issue is happening at this line and perhaps handling the exception and
> setting the value to be null may be better options.
> Yes at client side nothing can be done because exception is happening
> before this.valueDeserializer.deserialize can be called.
>
> Thanks
> Sachin
>
>
> On Thu, Mar 30, 2017 at 4:28 PM, Damian Guy <damian....@gmail.com> wrote:
>
> > The suggestions in that FAQ won't help as it is too late, i.e., the
> message
> > has already been received into Streams.
> > You could create a simple app that uses the Consumer, seeks to the
> offset,
> > and tries to read the message. If you did this in debug mode you might
> find
> > out some more information.
> >
> >
> > On Thu, 30 Mar 2017 at 11:50 Sachin Mittal <sjmit...@gmail.com> wrote:
> >
> > > Well I try to read that offset via kafka-console-consumer.sh too and it
> > > fails with same error.
> > >
> > > So was wondering if I can apply any of the suggestion as per
> > >
> > > http://docs.confluent.io/3.2.0/streams/faq.html#handling-
> > corrupted-records-and-deserialization-errors-poison-pill-messages
> > >
> > > If there is any other was just to get the contents of that message it
> > would
> > > be helpful.
> > >
> > > Thanks
> > > Sachin
> > >
> > >
> > > On Thu, Mar 30, 2017 at 4:11 PM, Damian Guy <damian....@gmail.com>
> > wrote:
> > >
> > > > Hi Sachin,
> > > >
> > > > Have you tried firing up a consumer (non-streams), seeking to that
> > offset
> > > > on the topic and seeing what the message is? Might be easier to
> debug?
> > > Like
> > > > you say, it is failing in the consumer.
> > > > Thanks,
> > > > Damian
> > > >
> > > > On Thu, 30 Mar 2017 at 10:35 Sachin Mittal <sjmit...@gmail.com>
> wrote:
> > > >
> > > > > I think I am following the third option.
> > > > >
> > > > > My pipeline is:
> > > > >
> > > > > serde= Serdes.serdeFrom(new VSerializer(), new VDeserializer ());
> > > > >
> > > > > builder.stream(Serdes.String(), serde, "advice-stream")
> > > > > .filter(new Predicate<String, V>() { ...})
> > > > > .groupByKey()
> > > > > .aggregate(new Initializer<V1>() {...}, new Aggregator<String, V,
> > > V1>()
> > > > > {...}, windows, supplier)
> > > > > .mapValues(new ValueMapper<V1, V2>() { ... })
> > > > > .foreach(new ForeachAction<Windowed<String>, V2>() {... });
> > > > >
> > > > >
> > > > > and In VDeserializer (implements Deserializer<V>) I am doing
> > something
> > > > like
> > > > > this:
> > > > >
> > > > > public V deserialize(String paramString, byte[]
> > paramArrayOfByte) {
> > > > > if (paramArrayOfByte == null) { return null;}
> > > > > V data = null;
> > > > > try {
> > > > > data = objectMapper.readValue(paramArrayOfByte, new
> > > > > TypeReference<V>() {});
> > > > > } catch (Exception e) {
> > > > > e.printStackTrace();
> > > > > }
> > > > > return data;
> > > > > }
> > > > >
> > > > > So I am catching any exception that may happen when deserializing
> the
> > > > data.
> > > > >
> > > > > This is what third option suggest (if I am not mistaken).
> > > > >
> > > > > Please let me know given the pipeline we which option would be best
> > and
> > > > how
> > > > > can we incorporate that in our pipeline.
> > > > >
> > > > > Also not exception is happening when reading from source topic
> which
> > is
> > > > > "advice-stream", so looks like flow is not going to pipeline at all
> > for
> > > > us
> > > > > to handle. It is terminating right at consumer poll.
> > > > >
> > > > > Thanks
> > > > > Sachin
> > > > >
> > > > >
> > > > > On Thu, Mar 30, 2017 at 2:22 PM, Michael Noll <
> mich...@confluent.io>
> > > > > wrote:
> > > > >
> > > > > > Could this be a corrupted message ("poison pill") in your topic?
> > > > > >
> > > > > > If so, take a look at
> > > > > > http://docs.confluent.io/current/streams/faq.html#
> > > > > >
> > > > > handling-corrupted-records-and-deserialization-errors-
> > > > poison-pill-messages
> > > > > >
> > > > > > FYI: We're currently investigating a more elegant way to address
> > such
> > > > > > poison pill problems. If you have feedback on that front, feel
> > free
> > > to
> > > > > > share it with us. :-)
> > > > > >
> > > > > > -Michael
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > On Wed, Mar 29, 2017 at 10:07 PM, Sachin Mittal <
> > sjmit...@gmail.com>
> > > > > > wrote:
> > > > > >
> > > > > > > Hi,
> > > > > > > This is for first time we are getting a weird exception.
> > > > > > > After this the streams caches.
> > > > > > >
> > > > > > > Only work around is to manually seek and commit offset to a
> > greater
> > > > > > number
> > > > > > > and we are needing this manual intervention again and again.
> > > > > > >
> > > > > > > Any idea what is causing it and how can we circumvent this.
> > > > > > >
> > > > > > > Note this error happens in both cases when 10.2 client or
> 10.1.1
> > > > client
> > > > > > > connect to kafka server 10.1.1
> > > > > > >
> > > > > > > So this does not looks like version issue.
> > > > > > >
> > > > > > > Also we have following setting
> > > > > > > message.max.bytes=5000013
> > > > > > > ConsumerConfig.MAX_PARTITION_FETCH_BYTES_CONFIG, "5048576"
> > > > > > > ProducerConfig.MAX_REQUEST_SIZE_CONFIG, "5048576"
> > > > > > >
> > > > > > > Rest is all default and also increasing the value for
> > > > > > > ConsumerConfig.MAX_PARTITION_FETCH_BYTES_CONFIG did not help.
> > > > > > >
> > > > > > > Stack trace below.
> > > > > > >
> > > > > > > Thanks
> > > > > > > Sachin
> > > > > > >
> > > > > > >
> > > > > > > org.apache.kafka.common.errors.SerializationException: Error
> > > > > > deserializing
> > > > > > > key/value for partition advice-stream-6 at offset 45153795
> > > > > > > java.lang.IllegalArgumentException: null
> > > > > > > at java.nio.Buffer.limit(Buffer.java:275) ~[na:1.8.0_122-ea]
> > > > > > > at org.apache.kafka.common.utils.Utils.sizeDelimited(Utils.
> > > > java:791)
> > > > > > > ~[kafka-clients-0.10.2.0.jar:na]
> > > > > > > at org.apache.kafka.common.record.Record.value(Record.
> > java:268)
> > > > > > > ~[kafka-clients-0.10.2.0.jar:na]
> > > > > > > at org.apache.kafka.clients.consumer.internals.Fetcher.
> > > > > > > parseRecord(Fetcher.java:867)
> > > > > > > ~[kafka-clients-0.10.2.0.jar:na]
> > > > > > > at org.apache.kafka.clients.consumer.internals.Fetcher.
> > > > > > > parseCompletedFetch(Fetcher.java:775)
> > ~[kafka-clients-0.10.2.0.jar:
> > > > na]
> > > > > > > at org.apache.kafka.clients.consumer.internals.Fetcher.
> > > > > > > fetchedRecords(Fetcher.java:473) ~[kafka-clients-0.10.2.0.jar:
> > na]
> > > > > > > at org.apache.kafka.clients.consumer.KafkaConsumer.
> > > > > > > pollOnce(KafkaConsumer.java:1062)
> ~[kafka-clients-0.10.2.0.jar:
> > na]
> > > > > > > at org.apache.kafka.clients.consumer.KafkaConsumer.poll(
> > > > > > > KafkaConsumer.java:995)
> > > > > > > ~[kafka-clients-0.10.2.0.jar:na]
> > > > > > > at org.apache.kafka.streams.processor.internals.
> > > > StreamThread.runLoop(
> > > > > > > StreamThread.java:592)
> > > > > > > ~[kafka-streams-0.10.2.1-SNAPSHOT.jar:na]
> > > > > > > at org.apache.kafka.streams.processor.internals.
> > > > > > > StreamThread.run(StreamThread.java:378)
> > ~[kafka-streams-0.10.2.1-
> > > > > > > SNAPSHOT.jar:na]
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
