[KAFKA-13738] Mirror Maker2 properties are not being picked up from properties file

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.8.0
• Component/s: mirrormaker
• Labels: mirror-maker mirrormaker
• Flags: Important
• Assignee: Unassigned
• Reporter: Juhi Bhadviya
• Created: 15/Mar/22 06:03
• Updated: 15/Mar/22 06:10

Description

We have created a custom docker image using `confluentinc/cp-kafka:7.0.1` :

 

FROM confluentinc/cp-kafka:7.0.1 as Builder
FROM openjdk11:alpine-jre
RUN apk update && apk upgrade && apk --no-cache add bash
COPY --from=Builder /usr/share/java/kafka/kafka_*-ccs.jar  /usr/share/java/kafka/
COPY --from=Builder /usr/share/java/kafka/scala*.jar  /usr/share/java/kafka/
COPY --from=Builder /usr/share/java/kafka/metrics-core*.jar  /usr/share/java/kafka/
COPY --from=Builder /usr/share/java/kafka/jopt-simple*.jar  /usr/share/java/kafka/
COPY --from=Builder /usr/share/java/kafka/argparse*[.]jar  /usr/share/java/kafka/
COPY --from=Builder /usr/share/java/kafka/slf4j-api*[.]jar  /usr/share/java/kafka/
COPY --from=Builder /usr/share/java/kafka/slf4j-log4j12*[.]jar  /usr/share/java/kafka/
COPY --from=Builder /usr/share/java/kafka/confluent-log4j*[.]jar  /usr/share/java/kafka/
COPY --from=Builder /usr/share/java/kafka/connect*.jar  /usr/share/java/kafka/
COPY --from=Builder /usr/share/java/kafka/reflections*.jar  /usr/share/java/kafka/
COPY --from=Builder /usr/share/java/kafka/javassist*.jar  /usr/share/java/kafka/
COPY --from=Builder /usr/share/java/kafka/maven*.jar  /usr/share/java/kafka/
COPY --from=Builder /usr/share/java/kafka/commons*.jar  /usr/share/java/kafka/
COPY --from=Builder /usr/share/java/kafka/jackson*.jar  /usr/share/java/kafka/
COPY --from=Builder /usr/share/java/cp-base-new/kafka-clients*-ccs.jar  /usr/share/java/kafka/
COPY --from=Builder /etc/kafka/connect-log4j.properties /etc/kafka/connect-log4j.properties
ENV CLASSPATH='/usr/share/java/kafka/:/usr/share/java/kafka/'
ENV KAFKA_LOG4J_OPTS='-Dlog4j.configuration=file:/etc/kafka/connect-log4j.properties'
COPY --from=0 /bin/connect-mirror-maker /bin/kafka-run-class /bin/
RUN cp /opt/java/openjdk/lib/security/cacerts /tmp/kafka.client.truststore.jks
RUN mkdir -p /tmp/config
CMD ["sh", "-c", "/bin/connect-mirror-maker /tmp/config/mm2.properties"]
 

The mm2.properties file is as below:
 

clusters = source, target 
source.bootstrap.servers = "" 
target.bootstrap.servers = "" 

#security.protocol=SSL 
source.ssl.truststore.location=/tmp/kafka.client.truststore.jks 
source.security.protocol=SASL_SSL 
source.sasl.mechanism=SCRAM-SHA-512 source.sasl.jaas.config=org.apache.kafka.common.security.scram.ScramLoginModule required username="" password=""; 

target.ssl.truststore.location=/tmp/kafka.client.truststore.jks 
target.security.protocol=SASL_SSL 
target.sasl.mechanism=SCRAM-SHA-512 target.sasl.jaas.config=org.apache.kafka.common.security.scram.ScramLoginModule required username="" password="";

source->target.enabled = true
target->source.enabled = false


topics = .*
groups = .*


tasks.max = 1
replication.factor = 3
refresh.topics.enabled = true
sync.topic.configs.enabled = true
refresh.topics.interval.seconds = 5
topics.blacklist = random
groups.blacklist = random


# Enable heartbeats and checkpoints.
source->target.emit.heartbeats.enabled = true
source->target.emit.checkpoints.enabled = true
source->target.sync.group.offsets.enabled = true

However in MM2 logs, the properties are not set as per the property file provided, instead uses default values:

 sync.group.offsets.enabled = false

Due this consumer offset sync is not working.