Also, also, you can try building our Git master branch which uses Kafka 0.10.0.0 instead of 0.9.0.1
Gary On Fri, Aug 5, 2016 at 6:04 PM, Gary Gregory <garydgreg...@gmail.com> wrote: > Also, try omitting these properties: > > <Property name="key.serializer">org.apache.kafka.common. > serialization.StringSerializer</Property> > <Property name="value.serializer">org.apache.kafka.common. > serialization.StringSerializer</Property> > > Gary > > On Fri, Aug 5, 2016 at 6:02 PM, Gary Gregory <garydgreg...@gmail.com> > wrote: > >> Do you get a stack trace with the exception? >> >> Gary >> >> On Fri, Aug 5, 2016 at 11:03 AM, Meadowlark Bradsher < >> mbrads...@guidewire.com> wrote: >> >>> Hello, >>> >>> I am attempting to use a kafka log appender. The topic is written to >>> Kafka but the appender breaks during the messaging. >>> >>> org.apache.kafka.common.errors.SerializationException: Can't convert >>> value of class [B to class >>> org.apache.kafka.common.serialization.StringSerializer >>> specified in value.serializer >>> >>> I had seen only one SO post about this error which seems to point to >>> Spring as the culprit but I am not using Spring. >>> >>> http://stackoverflow.com/questions/32368372/spring-integrati >>> on-kafka-sending-a-basic-string >>> >>> I am running this in IntelliJ without any Spring configuration. The >>> log4j2.xml file is as follows (with modification to the Kafka host). >>> >>> <?xml version="1.0" encoding="UTF-8"?> >>> <Configuration status="WARN"> >>> <Appenders> >>> <Console name="Console" target="SYSTEM_OUT"> >>> <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} >>> - %msg%n"/> >>> </Console> >>> <Kafka name="Kafka" topic="log-test"> >>> <PatternLayout pattern="%date %message"/> >>> <Property name="bootstrap.servers">localhost:9092</Property> >>> <Property name="key.class.type">java.lang.String</Property> >>> <Property name="value.class.type">java.lang.String</Property> >>> <Property name="key.serializer">org.apac >>> he.kafka.common.serialization.StringSerializer</Property> >>> <Property name="value.serializer">org.ap >>> ache.kafka.common.serialization.StringSerializer</Property> >>> </Kafka> >>> </Appenders> >>> <Loggers> >>> <Root level="DEBUG"> >>> <AppenderRef ref="Kafka"/> >>> </Root> >>> <Logger name="org.apache.kafka" level="INFO" > >>> <AppenderRef ref="Kafka"/> >>> </Logger> >>> <!-- avoid recursive logging/ haven't tried OFF yet --> >>> </Loggers> >>> </Configuration> >>> >>> >>> The test I am doing is >>> >>> >>> >>> private static final Logger logger = LogManager.getRootLogger(); >>> >>> logger.info("{\"f1\": \"value1\"}"); >>> >>> >>> >>> I just downloaded the source to log4j2 to see if this will help me >>> understand what is happening but perhaps this obvious to someone in this >>> community? >>> >>> >>> >>> Any pointers would be very helpful and appreciated. >>> >>> >>> >>> >>> >>> Thanks >>> >>> Meadowlark Bradsher >>> >>> >>> >>> >>> >>> >>> >>> >> >> >> -- >> E-Mail: garydgreg...@gmail.com | ggreg...@apache.org >> Java Persistence with Hibernate, Second Edition >> <http://www.manning.com/bauer3/> >> JUnit in Action, Second Edition <http://www.manning.com/tahchiev/> >> Spring Batch in Action <http://www.manning.com/templier/> >> Blog: http://garygregory.wordpress.com >> Home: http://garygregory.com/ >> Tweet! http://twitter.com/GaryGregory >> > > > > -- > E-Mail: garydgreg...@gmail.com | ggreg...@apache.org > Java Persistence with Hibernate, Second Edition > <http://www.manning.com/bauer3/> > JUnit in Action, Second Edition <http://www.manning.com/tahchiev/> > Spring Batch in Action <http://www.manning.com/templier/> > Blog: http://garygregory.wordpress.com > Home: http://garygregory.com/ > Tweet! http://twitter.com/GaryGregory > -- E-Mail: garydgreg...@gmail.com | ggreg...@apache.org Java Persistence with Hibernate, Second Edition <http://www.manning.com/bauer3/> JUnit in Action, Second Edition <http://www.manning.com/tahchiev/> Spring Batch in Action <http://www.manning.com/templier/> Blog: http://garygregory.wordpress.com Home: http://garygregory.com/ Tweet! http://twitter.com/GaryGregory
