Hi Shantanu, Please refer this <https://stackoverflow.com/questions/52386300/kafka-producer-huge-memory-usage-leak/52386713#52386713>. Hope it helps.
Thanks, Subash On Wed, Sep 19, 2018 at 11:59 AM Shantanu Deshmukh <shantanu...@gmail.com> wrote: > Any thoughts on this matter? Someone, please help. > > On Tue, Sep 18, 2018 at 6:05 PM Shantanu Deshmukh <shantanu...@gmail.com> > wrote: > > > Additionally, here's the producer config > > > > kafka.bootstrap.servers=x.x.x.x:9092,x.x.x.x:9092,x.x.x.x:9092 > > kafka.acks=0 > > > kafka.key.serializer=org.apache.kafka.common.serialization.StringSerializer > > > > > kafka.value.serializer=org.apache.kafka.common.serialization.StringSerializer > > kafka.max.block.ms=1000 > > kafka.request.timeout.ms=1000 > > kafka.max.in.flight.requests.per.connection=1 > > kafka.retries=0 > > kafka.compression.type=gzip > > kafka.security.protocol=SSL > > kafka.ssl.truststore.location=/data/kafka/kafka-server-truststore.jks > > kafka.ssl.truststore.password=XXXXXX > > kafka.linger.ms=300 > > logger.level=INFO > > > > On Tue, Sep 18, 2018 at 5:36 PM Shantanu Deshmukh <shantanu...@gmail.com > > > > wrote: > > > >> Hello, > >> > >> We have a 3 broker Kafka 0.10.1.0 deployment in production. There are > >> some applications which have Kafka Producers embedded in them which send > >> application logs to a topic. This topic has 10 partitions with > replication > >> factor of 3. > >> > >> We are observing that memory usage on some of these application servers > >> keep shooting through the roof intermittently. After taking heapdump we > >> found out that top suspects were: > >> *---------------------* > >> > >> > >> *org.apache.kafka.common.network.Selector -* > >> > >> occupies *352,519,104 (24.96%)* bytes. The memory is accumulated in one > >> instance of *"byte[]"* loaded by *"<system class loader>"*. > >> > >> *org.apache.kafka.common.network.KafkaChannel -* > >> > >> occupies *352,527,424 (24.96%)* bytes. The memory is accumulated in one > >> instance of *"byte[]"* loaded by *"<system class loader>"* > >> > >> * --------------------- * > >> > >> Both of these were holding about 352MB of space. 3 such instances, so > >> they were consuming about 1.2GB of memory. > >> > >> Now regarding usage of producers. Not a huge amount of logs are being > >> sent to Kafka cluster. It is about 200 msgs/sec. Only one producer > object > >> is being used throughout application. Async send function is used. > >> > >> What could be the cause of such huge memory usage? Is this some sort of > >> memory leak in this specific Kafka version? > >> > >> > -- Thanks and Regards, Subash Konar
