# Licensed to the Apache Software Foundation (ASF) under one or more # contributor license agreements. See the NOTICE file distributed with # this work for additional information regarding copyright ownership. # The ASF licenses this file to You under the Apache License, Version 2.0 # (the "License"); you may not use this file except in compliance with # the License. You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # see kafka.server.KafkaConfig for additional details and defaults ############################# Server Basics ############################# # The id of the broker. This must be set to a unique integer for each broker. brokerid=0 # Hostname the broker will advertise to consumers. If not set, kafka will use the value returned # from InetAddress.getLocalHost(). If there are multiple interfaces getLocalHost # may not be what you want. #hostname= ############################# Socket Server Settings ############################# # The port the socket server listens on port=9092 # The number of threads handling network requests network.threads=2 # The number of threads doing disk I/O io.threads=2 # The send buffer (SO_SNDBUF) used by the socket server socket.send.buffer=1048576 # The receive buffer (SO_RCVBUF) used by the socket server socket.receive.buffer=1048576 # The maximum size of a request that the socket server will accept (protection against OOM) max.socket.request.bytes=104857600 ############################# Log Basics ############################# # The directory under which to store log files log.dir=/tmp/kafka-logs # The number of logical partitions per topic per server. More partitions allow greater parallelism # for consumption, but also mean more files. num.partitions=1 # Overrides for for the default given by num.partitions on a per-topic basis #topic.partition.count.map=topic1:3, topic2:4 ############################# Log Flush Policy ############################# # The following configurations control the flush of data to disk. This is the most # important performance knob in kafka. # There are a few important trade-offs here: # 1. Durability: Unflushed data is at greater risk of loss in the event of a crash. # 2. Latency: Data is not made available to consumers until it is flushed (which adds latency). # 3. Throughput: The flush is generally the most expensive operation. # The settings below allow one to configure the flush policy to flush data after a period of time or # every N messages (or both). This can be done globally and overridden on a per-topic basis. # The number of messages to accept before forcing a flush of data to disk log.flush.interval=10000 # The maximum amount of time a message can sit in a log before we force a flush log.default.flush.interval.ms=1000 # Per-topic overrides for log.default.flush.interval.ms #topic.flush.intervals.ms=topic1:1000, topic2:3000 # The interval (in ms) at which logs are checked to see if they need to be flushed to disk. log.default.flush.scheduler.interval.ms=1000 ############################# Log Retention Policy ############################# # The following configurations control the disposal of log segments. The policy can # be set to delete segments after a period of time, or after a given size has accumulated. # A segment will be deleted whenever *either* of these criteria are met. Deletion always happens # from the end of the log. # The minimum age of a log file to be eligible for deletion log.retention.hours=168 # A size-based retention policy for logs. Segments are pruned from the log as long as the remaining # segments don't drop below log.retention.size. #log.retention.size=1073741824 # The maximum size of a log segment file. When this size is reached a new log segment will be created. log.file.size=536870912 # The interval at which log segments are checked to see if they can be deleted according # to the retention policies log.cleanup.interval.mins=1 ############################# Zookeeper ############################# # Zk connection string (see zk docs for details). # This is a comma separated host:port pairs, each corresponding to a zk # server. e.g. "127.0.0.1:3000,127.0.0.1:3001,127.0.0.1:3002". # You can also append an optional chroot string to the urls to specify the # root directory for all kafka znodes. zk.connect=localhost:2181 # Timeout in ms for connecting to zookeeper zk.connectiontimeout.ms=1000000 # metrics reporter properties kafka.metrics.polling.interval.secs=5 kafka.metrics.reporters=kafka.metrics.KafkaCSVMetricsReporter kafka.csv.metrics.dir=/tmp/kafka_metrics # Disable csv reporting by default. kafka.csv.metrics.reporter.enabled=false