[KAFKA-3465] kafka.tools.ConsumerOffsetChecker won't align with kafka New Consumer mode

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Won't Fix
• Affects Version/s: 0.9.0.0, 0.11.0.0
• Component/s: core
• Assignee: Vahid Hashemian
• Reporter: BrianLing
• Created: 25/Mar/16 03:30
• Updated: 25/Sep/17 15:15
• Resolved: 25/Sep/17 10:26

Description

1. When we enable mirrorMake to migrate Kafka event from one to other with "new.consumer" mode:

java -Xmx2G -server -XX:+UseG1GC -XX:MaxGCPauseMillis=20 -XX:InitiatingHeapOccupancyPercent=35 -XX:+DisableExplicitGC -Djava.awt.headless=true -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Dkafka.logs.dir=/kafka/kafka-app-logs -Dlog4j.configuration=file:/kafka/kafka_2.10-0.9.0.0/bin/../config/tools-log4j.properties -cp :/kafka/kafka_2.10-0.9.0.0/bin/../libs/* -Dkafka.logs.filename=lvs-slca-mm.log kafka.tools.MirrorMaker lvs-slca-mm.log --consumer.config ../config/consumer.properties --new.consumer --num.streams 4 --producer.config ../config/producer-slca.properties --whitelist risk.*

2. When we use ConsumerOffzsetChecker tool, notice the lag won't changed and the owner is none.

bin/kafka-run-class.sh kafka.tools.ConsumerOffsetChecker --broker-info --group lvs.slca.mirrormaker --zookeeper lvsdmetlvm01.lvs.paypal.com:2181 --topic XXXX

Group Topic Pid Offset logSize Lag Owner
lvs.slca.mirrormaker XXXX 0 418578332 418678347 100015 none
lvs.slca.mirrormaker XXXX 1 418598026 418698338 100312 none

[Root Cause]
I think it's due to 0.9.0 new feature to switch zookeeper dependency to kafka internal to store offset & consumer owner information.

Does it mean we can not use the below command to check new consumer’s lag since current lag formula: lag= logSize – offset https://github.com/apache/kafka/blob/trunk/core/src/main/scala/kafka/tools/ConsumerOffsetChecker.scala#L80
https://github.com/apache/kafka/blob/0.9.0/core/src/main/scala/kafka/tools/ConsumerOffsetChecker.scala#L174-L182 => offSet Fetch from zookeeper instead of from Kafka

Issue Links

• is related to: KAFKA-5495 Replace the deprecated 'ConsumerOffsetChecker' in documentation
• links to: GitHub Pull Request #3438