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https://issues.apache.org/jira/browse/KAFKA-8335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16836061#comment-16836061
]
Weichu Liu commented on KAFKA-8335:
-----------------------------------
Hi, I uploaded a sample segment here: [^segment.zip]
And here is the broker setting on our Kafka
{noformat}
[2019-05-07 02:00:50,472] INFO KafkaConfig values:
advertised.host.name = null
advertised.listeners = null
advertised.port = null
alter.config.policy.class.name = null
alter.log.dirs.replication.quota.window.num = 11
alter.log.dirs.replication.quota.window.size.seconds = 1
authorizer.class.name =
auto.create.topics.enable = true
auto.leader.rebalance.enable = true
background.threads = 10
broker.id = 1
broker.id.generation.enable = true
broker.rack = null
client.quota.callback.class = null
compression.type = producer
connection.failed.authentication.delay.ms = 100
connections.max.idle.ms = 600000
connections.max.reauth.ms = 0
control.plane.listener.name = null
controlled.shutdown.enable = true
controlled.shutdown.max.retries = 3
controlled.shutdown.retry.backoff.ms = 5000
controller.socket.timeout.ms = 30000
create.topic.policy.class.name = null
default.replication.factor = 3
delegation.token.expiry.check.interval.ms = 3600000
delegation.token.expiry.time.ms = 86400000
delegation.token.master.key = null
delegation.token.max.lifetime.ms = 604800000
delete.records.purgatory.purge.interval.requests = 1
delete.topic.enable = true
fetch.purgatory.purge.interval.requests = 1000
group.initial.rebalance.delay.ms = 3000
group.max.session.timeout.ms = 300000
group.max.size = 2147483647
group.min.session.timeout.ms = 6000
host.name =
inter.broker.listener.name = null
inter.broker.protocol.version = 2.2-IV1
kafka.metrics.polling.interval.secs = 10
kafka.metrics.reporters = []
leader.imbalance.check.interval.seconds = 300
leader.imbalance.per.broker.percentage = 10
listener.security.protocol.map =
PLAINTEXT:PLAINTEXT,SSL:SSL,SASL_PLAINTEXT:SASL_PLAINTEXT,SASL_SSL:SASL_SSL
listeners = PLAINTEXT://:9092,SSL://:9093
log.cleaner.backoff.ms = 15000
log.cleaner.dedupe.buffer.size = 134217728
log.cleaner.delete.retention.ms = 86400000
log.cleaner.enable = true
log.cleaner.io.buffer.load.factor = 0.9
log.cleaner.io.buffer.size = 524288
log.cleaner.io.max.bytes.per.second = 1.7976931348623157E308
log.cleaner.min.cleanable.ratio = 0.5
log.cleaner.min.compaction.lag.ms = 0
log.cleaner.threads = 1
log.cleanup.policy = [delete]
log.dir = /tmp/kafka-logs
log.dirs = /var/lib/kafka/data
log.flush.interval.messages = 9223372036854775807
log.flush.interval.ms = null
log.flush.offset.checkpoint.interval.ms = 60000
log.flush.scheduler.interval.ms = 9223372036854775807
log.flush.start.offset.checkpoint.interval.ms = 60000
log.index.interval.bytes = 4096
log.index.size.max.bytes = 10485760
log.message.downconversion.enable = true
log.message.format.version = 2.2-IV1
log.message.timestamp.difference.max.ms = 9223372036854775807
log.message.timestamp.type = CreateTime
log.preallocate = false
log.retention.bytes = -1
log.retention.check.interval.ms = 300000
log.retention.hours = 168
log.retention.minutes = null
log.retention.ms = null
log.roll.hours = 168
log.roll.jitter.hours = 0
log.roll.jitter.ms = null
log.roll.ms = null
log.segment.bytes = 1073741824
log.segment.delete.delay.ms = 60000
max.connections.per.ip = 2147483647
max.connections.per.ip.overrides =
max.incremental.fetch.session.cache.slots = 1000
message.max.bytes = 2097152
metric.reporters = []
metrics.num.samples = 2
metrics.recording.level = INFO
metrics.sample.window.ms = 30000
min.insync.replicas = 1
num.io.threads = 8
num.network.threads = 3
num.partitions = 5
num.recovery.threads.per.data.dir = 1
num.replica.alter.log.dirs.threads = null
num.replica.fetchers = 1
offset.metadata.max.bytes = 4096
offsets.commit.required.acks = -1
offsets.commit.timeout.ms = 5000
offsets.load.buffer.size = 5242880
offsets.retention.check.interval.ms = 600000
offsets.retention.minutes = 10080
offsets.topic.compression.codec = 0
offsets.topic.num.partitions = 50
offsets.topic.replication.factor = 3
offsets.topic.segment.bytes = 104857600
password.encoder.cipher.algorithm = AES/CBC/PKCS5Padding
password.encoder.iterations = 4096
password.encoder.key.length = 128
password.encoder.keyfactory.algorithm = null
password.encoder.old.secret = null
password.encoder.secret = null
port = 9092
principal.builder.class = null
producer.purgatory.purge.interval.requests = 1000
queued.max.request.bytes = -1
queued.max.requests = 500
quota.consumer.default = 9223372036854775807
quota.producer.default = 9223372036854775807
quota.window.num = 11
quota.window.size.seconds = 1
replica.fetch.backoff.ms = 1000
replica.fetch.max.bytes = 1048576
replica.fetch.min.bytes = 1
replica.fetch.response.max.bytes = 10485760
replica.fetch.wait.max.ms = 500
replica.high.watermark.checkpoint.interval.ms = 5000
replica.lag.time.max.ms = 10000
replica.socket.receive.buffer.bytes = 65536
replica.socket.timeout.ms = 30000
replication.quota.window.num = 11
replication.quota.window.size.seconds = 1
request.timeout.ms = 30000
reserved.broker.max.id = 1000
sasl.client.callback.handler.class = null
sasl.enabled.mechanisms = [GSSAPI]
sasl.jaas.config = null
sasl.kerberos.kinit.cmd = /usr/bin/kinit
sasl.kerberos.min.time.before.relogin = 60000
sasl.kerberos.principal.to.local.rules = [DEFAULT]
sasl.kerberos.service.name = null
sasl.kerberos.ticket.renew.jitter = 0.05
sasl.kerberos.ticket.renew.window.factor = 0.8
sasl.login.callback.handler.class = null
sasl.login.class = null
sasl.login.refresh.buffer.seconds = 300
sasl.login.refresh.min.period.seconds = 60
sasl.login.refresh.window.factor = 0.8
sasl.login.refresh.window.jitter = 0.05
sasl.mechanism.inter.broker.protocol = GSSAPI
sasl.server.callback.handler.class = null
security.inter.broker.protocol = PLAINTEXT
socket.receive.buffer.bytes = 102400
socket.request.max.bytes = 104857600
socket.send.buffer.bytes = 102400
ssl.cipher.suites = []
ssl.client.auth = none
ssl.enabled.protocols = [TLSv1.2, TLSv1.1, TLSv1]
ssl.endpoint.identification.algorithm = https
ssl.key.password = [hidden]
ssl.keymanager.algorithm = SunX509
ssl.keystore.location = /etc/kafka/server.keystore.jks
ssl.keystore.password = [hidden]
ssl.keystore.type = JKS
ssl.principal.mapping.rules = [DEFAULT]
ssl.protocol = TLS
ssl.provider = null
ssl.secure.random.implementation = null
ssl.trustmanager.algorithm = PKIX
ssl.truststore.location = /etc/kafka/server.truststore.jks
ssl.truststore.password = [hidden]
ssl.truststore.type = JKS
transaction.abort.timed.out.transaction.cleanup.interval.ms = 60000
transaction.max.timeout.ms = 900000
transaction.remove.expired.transaction.cleanup.interval.ms = 3600000
transaction.state.log.load.buffer.size = 5242880
transaction.state.log.min.isr = 2
transaction.state.log.num.partitions = 50
transaction.state.log.replication.factor = 3
transaction.state.log.segment.bytes = 104857600
transactional.id.expiration.ms = 604800000
unclean.leader.election.enable = false
zookeeper.connect = kafka1:2181,kafka2:2181,kafka3:2181
zookeeper.connection.timeout.ms = 6000
zookeeper.max.in.flight.requests = 10
zookeeper.session.timeout.ms = 6000
zookeeper.set.acl = false
zookeeper.sync.time.ms = 2000
(kafka.server.KafkaConfig)
{noformat}
> Log cleaner skips Transactional mark and batch record, causing unlimited
> growth of __consumer_offsets
> -----------------------------------------------------------------------------------------------------
>
> Key: KAFKA-8335
> URL: https://issues.apache.org/jira/browse/KAFKA-8335
> Project: Kafka
> Issue Type: Bug
> Affects Versions: 2.2.0
> Reporter: Boquan Tang
> Priority: Major
> Attachments: segment.zip
>
>
> My Colleague Weichu already sent out a mail to kafka user mailing list
> regarding this issue, but we think it's worth having a ticket tracking it.
> We are using Kafka Streams with exactly-once enabled on a Kafka cluster for
> a while.
> Recently we found that the size of __consumer_offsets partitions grew huge.
> Some partition went over 30G. This caused Kafka to take quite long to load
> "__consumer_offsets" topic on startup (it loads the topic in order to
> become group coordinator).
> We dumped the __consumer_offsets segments and found that while normal
> offset commits are nicely compacted, transaction records (COMMIT, etc) are
> all preserved. Looks like that since these messages don't have a key, the
> LogCleaner is keeping them all:
> ----------
> $ bin/kafka-run-class.sh kafka.tools.DumpLogSegments --files
> ..../00000000003484332061.log --key-decoder-class
> kafka.serializer.StringDecoder 2>/dev/null | cat -v | head
> Dumping 00000000003484332061.log
> Starting offset: 3484332061
> offset: 3484332089 position: 549 CreateTime: 1556003706952 isvalid: true
> keysize: 4 valuesize: 6 magic: 2 compresscodec: NONE producerId: 1006
> producerEpoch: 2530 sequence: -1 isTransactional: true headerKeys: []
> endTxnMarker: COMMIT coordinatorEpoch: 81
> offset: 3484332090 position: 627 CreateTime: 1556003706952 isvalid: true
> keysize: 4 valuesize: 6 magic: 2 compresscodec: NONE producerId: 4005
> producerEpoch: 2520 sequence: -1 isTransactional: true headerKeys: []
> endTxnMarker: COMMIT coordinatorEpoch: 84
> ...
> ----------
> Streams is doing transaction commits per 100ms (commit.interval.ms=100 when
> exactly-once) so the __consumer_offsets is growing really fast.
> Is this (to keep all transactions) by design, or is that a bug for
> LogCleaner? What would be the way to clean up the topic?
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