Hi Experts, I use Kafka 0.11.2
I have an issue where the Kafka logs are bombarded with the following error: ERROR [KafkaApi-14733] Error when handling request {replica_id=-1,max_wait_time=0,min_bytes=0,max_bytes=2147483647,topics=[{topic=my_topic,partitions=[{partition=22,fetch_offset=1297798,max_bytes=1048576}]}]} (kafka.server.KafkaApis) java.lang.IllegalArgumentException: *Magic v1 does not support record headers* at org.apache.kafka.common.record.MemoryRecordsBuilder.appendWithOffset(MemoryRecordsBuilder.java:385) at org.apache.kafka.common.record.MemoryRecordsBuilder.append(MemoryRecordsBuilder.java:568) at org.apache.kafka.common.record.AbstractRecords.convertRecordBatch(AbstractRecords.java:117) at org.apache.kafka.common.record.AbstractRecords.downConvert(AbstractRecords.java:98) at org.apache.kafka.common.record.FileRecords.downConvert(FileRecords.java:245) at kafka.server.KafkaApis$$anonfun$kafka$server$KafkaApis$$convertedPartitionData$1$1$$anonfun$apply$5.apply(KafkaApis.scala:523) at kafka.server.KafkaApis$$anonfun$kafka$server$KafkaApis$$convertedPartitionData$1$1$$anonfun$apply$5.apply(KafkaApis.scala:521) at scala.Option.map(Option.scala:146) at kafka.server.KafkaApis$$anonfun$kafka$server$KafkaApis$$convertedPartitionData$1$1.apply(KafkaApis.scala:521) at kafka.server.KafkaApis$$anonfun$kafka$server$KafkaApis$$convertedPartitionData$1$1.apply(KafkaApis.scala:511) at scala.Option.flatMap(Option.scala:171) at kafka.server.KafkaApis.kafka$server$KafkaApis$$convertedPartitionData$1(KafkaApis.scala:511) at kafka.server.KafkaApis$$anonfun$kafka$server$KafkaApis$$createResponse$2$1.apply(KafkaApis.scala:559) at kafka.server.KafkaApis$$anonfun$kafka$server$KafkaApis$$createResponse$2$1.apply(KafkaApis.scala:558) at scala.collection.Iterator$class.foreach(Iterator.scala:891) at scala.collection.AbstractIterator.foreach(Iterator.scala:1334) at scala.collection.IterableLike$class.foreach(IterableLike.scala:72) at scala.collection.AbstractIterable.foreach(Iterable.scala:54) at kafka.server.KafkaApis.kafka$server$KafkaApis$$createResponse$2(KafkaApis.scala:558) at kafka.server.KafkaApis$$anonfun$kafka$server$KafkaApis$$fetchResponseCallback$1$1.apply$mcVI$sp(KafkaApis.scala:579) at kafka.server.ClientQuotaManager.recordAndThrottleOnQuotaViolation(ClientQuotaManager.scala:196) at kafka.server.KafkaApis.sendResponseMaybeThrottle(KafkaApis.scala:2014) at kafka.server.KafkaApis.kafka$server$KafkaApis$$fetchResponseCallback$1(KafkaApis.scala:578) at kafka.server.KafkaApis$$anonfun$kafka$server$KafkaApis$$processResponseCallback$1$1.apply$mcVI$sp(KafkaApis.scala:598) at kafka.server.ClientQuotaManager.recordAndThrottleOnQuotaViolation(ClientQuotaManager.scala:196) at kafka.server.ClientQuotaManager.recordAndMaybeThrottle(ClientQuotaManager.scala:188) at kafka.server.KafkaApis.kafka$server$KafkaApis$$processResponseCallback$1(KafkaApis.scala:597) at kafka.server.KafkaApis$$anonfun$handleFetchRequest$1.apply(KafkaApis.scala:614) at kafka.server.KafkaApis$$anonfun$handleFetchRequest$1.apply(KafkaApis.scala:614) at kafka.server.ReplicaManager.fetchMessages(ReplicaManager.scala:640) at kafka.server.KafkaApis.handleFetchRequest(KafkaApis.scala:606) at kafka.server.KafkaApis.handle(KafkaApis.scala:98) at kafka.server.KafkaRequestHandler.run(KafkaRequestHandler.scala:66) at java.lang.Thread.run(Thread.java:745) I understand this is probably related to a client that uses a client version that isn't compatible with 0.11, but I don't know how to pinpoint the client since the topic is used by multiple consumers. Any idea what this error actually means and how I can find the culprit? I can't read anything in the logs besides this error :-S Thanks a lot!