https://community.cloudera.com/t5/Support-Questions/Error-when-sending-message-to-topic-testTopic-with-key-null/m-p/179295#M141541 <P>Hi Everyone,</P><P>I have a issue with Kafka here. On a cluster I have installed Zookeeper-client and Zookeeper server and are up and running. Along the same I have Kafka-server up and running and on Ambari it shows the health as good and fine.</P><P>But, while I do execute the producer command for kafka as below, I am getting the below error:</P><P><U>Kafka Producer Command:</U></P><P>bin/kafka-console-producer.sh --broker-list kafka.broker:6667 --topic <I>testTopic</I></P><P><I><U>Error Message:</U></I></P><P><EM>[2017-09-05 12:22:02,638] ERROR Error when sending message to topic testTopic with key: null, value: 8 bytes with error: (org.apache.kafka.clients.producer.internals.ErrorLoggingCallback)<BR />org.apache.kafka.common.errors.TimeoutException: Expiring 2 record(s) for testTopic-0: 1535 ms has passed since batch creation plus linger time<BR />e<BR />345[2017-09-05 12:22:05,439] ERROR Error when sending message to topic testTopic with key: null, value: 5 bytes with error: (org.apache.kafka.clients.producer.internals.ErrorLoggingCallback)<BR />org.apache.kafka.common.errors.TimeoutException: Expiring 1 record(s) for testTopic-0: 1536 ms has passed since batch creation plus linger time</EM></P><P>Not getting the actual issue here. Any help will be appritiated.</P><P>Thanks,</P><P>Sravanthi</P> Wed, 06 Sep 2017 01:37:20 GMT sravanthi_bell1 2017-09-06T01:37:20Z