openstack/deb-python-kafka
Code Issues Proposed changes

Refactor and update integration tests

Browse Source
This commit is contained in:
Ivan Pouzyrevsky
2013-06-02 01:26:14 +04:00
committed by David Arthur
parent 6704050e50
commit e073b3310d
7 changed files with 420 additions and 263 deletions
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7
kafka/codec.py
View File

@@ -11,6 +11,13 @@ except ImportError:
log.warn("Snappy codec not available")
hasSnappy = False
def has_gzip():
return True
def has_snappy():
return hasSnappy
def gzip_encode(payload):
buf = StringIO()

5
kafka/consumer.py
View File

@@ -83,6 +83,11 @@ class SimpleConsumer(object):
for partition in self.client.topic_partitions[topic]:
self.offsets[partition] = 0
def stop(self):
if self.commit_timer is not None:
self.commit_timer.stop()
self.commit()
def seek(self, offset, whence):
"""
Alter the current offset in the consumer, similar to fseek

461
test/integration.py
View File

@@ -1,147 +1,337 @@
import glob
import logging
import os
import re
import select
import shlex
import shutil
import socket
import subprocess
import sys
import tempfile
from threading import Thread, Event
import threading
import time
import unittest
import uuid
from urlparse import urlparse
from kafka import *
from kafka.common import *
from kafka import * # noqa
from kafka.common import * # noqa
from kafka.codec import has_gzip, has_snappy
def kafka_log4j():
return os.path.abspath("./test/resources/log4j.properties")
def kafka_classpath():
# ./kafka-src/bin/kafka-run-class.sh is the authority.
ivy = os.path.expanduser("~/.ivy2/cache")
base = os.path.abspath("./kafka-src/")
jars = ["."]
jars.append(ivy + "/org.xerial.snappy/snappy-java/bundles/snappy-java-1.0.4.1.jar")
jars.append(ivy + "/org.scala-lang/scala-library/jars/scala-library-2.8.0.jar")
jars.append(ivy + "/org.scala-lang/scala-compiler/jars/scala-compiler-2.8.0.jar")
jars.append(ivy + "/log4j/log4j/jars/log4j-1.2.15.jar")
jars.append(ivy + "/org.slf4j/slf4j-api/jars/slf4j-api-1.6.4.jar")
jars.append(ivy + "/org.apache.zookeeper/zookeeper/jars/zookeeper-3.3.4.jar")
jars.append(ivy + "/net.sf.jopt-simple/jopt-simple/jars/jopt-simple-3.2.jar")
jars.extend(glob.glob(base + "/core/target/scala-2.8.0/*.jar"))
jars.extend(glob.glob(base + "/core/lib/*.jar"))
jars.extend(glob.glob(base + "/perf/target/scala-2.8.0/kafka*.jar"))
jars = filter(os.path.exists, map(os.path.abspath, jars))
return ":".join(jars)
def kafka_run_class_args(*args):
# ./kafka-src/bin/kafka-run-class.sh is the authority.
result = ["java", "-Xmx512M", "-server"]
result.append("-Dlog4j.configuration=file:%s" % kafka_log4j())
result.append("-Dcom.sun.management.jmxremote")
result.append("-Dcom.sun.management.jmxremote.authenticate=false")
result.append("-Dcom.sun.management.jmxremote.ssl=false")
result.append("-cp")
result.append(kafka_classpath())
result.extend(args)
return result
def get_open_port():
sock = socket.socket()
sock.bind(('',0))
sock.bind(("", 0))
port = sock.getsockname()[1]
sock.close()
return port
def build_kafka_classpath():
baseDir = "./kafka-src"
jars = []
jars += glob.glob(os.path.join(baseDir, "project/boot/scala-2.8.0/lib/*.jar"))
jars += glob.glob(os.path.join(baseDir, "core/target/scala_2.8.0/*.jar"))
jars += glob.glob(os.path.join(baseDir, "core/lib/*.jar"))
jars += glob.glob(os.path.join(baseDir, "core/lib_managed/scala_2.8.0/compile/*.jar"))
jars += glob.glob(os.path.join(baseDir, "core/target/scala-2.8.0/kafka_2.8.0-*.jar"))
jars += glob.glob(os.path.join(baseDir, "/Users/mumrah/.ivy2/cache/org.slf4j/slf4j-api/jars/slf4j-api-1.6.4.jar"))
cp = ":".join(["."] + [os.path.abspath(jar) for jar in jars])
cp += ":" + os.path.abspath(os.path.join(baseDir, "conf/log4j.properties"))
return cp
class KafkaFixture(Thread):
def __init__(self, host, port, broker_id, zk_chroot=None):
Thread.__init__(self)
self.broker_id = broker_id
self.zk_chroot = zk_chroot
self.port = port
self.capture = ""
self.shouldDie = Event()
self.tmpDir = tempfile.mkdtemp()
print("tmp dir: %s" % self.tmpDir)
def run(self):
# Create the log directory
logDir = os.path.join(self.tmpDir, 'logs')
os.mkdir(logDir)
stdout = open(os.path.join(logDir, 'stdout'), 'w')
# Create the config file
if self.zk_chroot is None:
self.zk_chroot= "kafka-python_%s" % self.tmpDir.replace("/", "_")
logConfig = "test/resources/log4j.properties"
configFile = os.path.join(self.tmpDir, 'server.properties')
f = open('test/resources/server.properties', 'r')
props = f.read()
f = open(configFile, 'w')
f.write(props % {'broker.id': self.broker_id,
'kafka.port': self.port,
'kafka.tmp.dir': logDir,
'kafka.partitions': 2,
'zk.chroot': self.zk_chroot})
f.close()
cp = build_kafka_classpath()
# Create the Zookeeper chroot
args = shlex.split("java -cp %s org.apache.zookeeper.ZooKeeperMain create /%s kafka-python" % (cp, self.zk_chroot))
proc = subprocess.Popen(args)
ret = proc.wait()
if ret != 0:
sys.exit(1)
def render_template(source_file, target_file, binding):
with open(source_file, "r") as handle:
template = handle.read()
with open(target_file, "w") as handle:
handle.write(template.format(**binding))
# Start Kafka
args = shlex.split("java -Xmx256M -server -Dlog4j.configuration=%s -cp %s kafka.Kafka %s" % (logConfig, cp, configFile))
proc = subprocess.Popen(args, bufsize=1, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, env={"JMX_PORT":"%d" % get_open_port()})
killed = False
while True:
(rlist, wlist, xlist) = select.select([proc.stdout], [], [], 1)
if proc.stdout in rlist:
read = proc.stdout.readline()
stdout.write(read)
stdout.flush()
self.capture += read
if self.shouldDie.is_set():
proc.terminate()
killed = True
if proc.poll() is not None:
#shutil.rmtree(self.tmpDir)
if killed:
break
else:
raise RuntimeError("Kafka died. Aborting.")
def wait_for(self, target, timeout=10):
t1 = time.time()
while True:
t2 = time.time()
if t2-t1 >= timeout:
return False
if target in self.capture:
return True
time.sleep(0.100)
def close(self):
self.shouldDie.set()
class ExternalKafkaFixture(object):
class ExternalServiceFixture(object):
def __init__(self, host, port):
print("Using already running Kafka at %s:%d" % (host, port))
print("Using already running service at %s:%d" % (host, port))
def open(self):
pass
def close(self):
pass
class SubprocessFixture(threading.Thread):
def __init__(self, args=[]):
threading.Thread.__init__(self)
self.args = args
self.captured_stdout = ""
self.captured_stderr = ""
self.stdout_file = None
self.stderr_file = None
self.capture_stdout = True
self.capture_stderr = True
self.show_stdout = True
self.show_stderr = True
self.should_die = threading.Event()
def configure_stdout(self, file=None, capture=True, show=False):
self.stdout_file = file
self.capture_stdout = capture
self.show_stdout = show
def configure_stderr(self, file=None, capture=False, show=True):
self.stderr_file = file
self.capture_stderr = capture
self.show_stderr = show
def run(self):
stdout_handle = None
stderr_handle = None
try:
if self.stdout_file:
stdout_handle = open(self.stdout_file, "w")
if self.stderr_file:
stderr_handle = open(self.stderr_file, "w")
self.run_with_handles(stdout_handle, stderr_handle)
finally:
if stdout_handle:
stdout_handle.close()
if stderr_handle:
stderr_handle.close()
def run_with_handles(self, stdout_handle, stderr_handle):
child = subprocess.Popen(
self.args,
bufsize=1,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
alive = True
while True:
(rds, wds, xds) = select.select([child.stdout, child.stderr], [], [], 1)
if child.stdout in rds:
line = child.stdout.readline()
if stdout_handle:
stdout_handle.write(line)
stdout_handle.flush()
if self.capture_stdout:
self.captured_stdout += line
if self.show_stdout:
sys.stdout.write(line)
sys.stdout.flush()
if child.stderr in rds:
line = child.stderr.readline()
if stderr_handle:
stderr_handle.write(line)
stderr_handle.flush()
if self.capture_stderr:
self.captured_stderr += line
if self.show_stderr:
sys.stderr.write(line)
sys.stderr.flush()
if self.should_die.is_set():
child.terminate()
alive = False
if child.poll() is not None:
if not alive:
break
else:
raise RuntimeError("Subprocess has died. Aborting.")
def wait_for(self, pattern, timeout=10):
t1 = time.time()
while True:
t2 = time.time()
if t2 - t1 >= timeout:
raise RuntimeError("Waiting for %r timed out" % pattern)
if re.search(pattern, self.captured_stdout) is not None:
return
if re.search(pattern, self.captured_stderr) is not None:
return
time.sleep(0.1)
def start(self):
threading.Thread.start(self)
def stop(self):
self.should_die.set()
self.join()
class ZookeeperFixture(object):
@staticmethod
def instance():
if "ZOOKEEPER_URI" in os.environ:
parse = urlparse(os.environ["ZOOKEEPER_URI"])
(host, port) = (parse.hostname, parse.port)
fixture = ExternalServiceFixture(host, port)
else:
(host, port) = ("127.0.0.1", get_open_port())
fixture = ZookeeperFixture(host, port)
fixture.open()
return fixture
def __init__(self, host, port):
self.host = host
self.port = port
self.tmp_dir = None
self.child = None
def open(self):
self.tmp_dir = tempfile.mkdtemp()
print("*** Running local Zookeeper instance...")
print(" host = %s" % self.host)
print(" port = %s" % self.port)
print(" tmp_dir = %s" % self.tmp_dir)
# Generate configs
properties = os.path.join(self.tmp_dir, "zookeeper.properties")
render_template("./test/resources/zookeeper.properties", properties, vars(self))
# Configure Zookeeper child process
self.child = SubprocessFixture(kafka_run_class_args(
"org.apache.zookeeper.server.quorum.QuorumPeerMain",
properties
))
self.child.configure_stdout(os.path.join(self.tmp_dir, "stdout.txt"))
self.child.configure_stderr(os.path.join(self.tmp_dir, "stderr.txt"))
# Party!
print("*** Starting Zookeeper...")
self.child.start()
self.child.wait_for(r"Snapshotting")
print("*** Done!")
def close(self):
print("*** Stopping Zookeeper...")
self.child.stop()
self.child = None
print("*** Done!")
shutil.rmtree(self.tmp_dir)
class KafkaFixture(object):
@staticmethod
def instance(broker_id, zk_host, zk_port, zk_chroot=None):
if zk_chroot is None:
zk_chroot = "kafka-python_" + str(uuid.uuid4()).replace("-", "_")
if "KAFKA_URI" in os.environ:
parse = urlparse(os.environ["KAFKA_URI"])
(host, port) = (parse.hostname, parse.port)
fixture = ExternalServiceFixture(host, port)
else:
(host, port) = ("localhost", get_open_port())
fixture = KafkaFixture(host, port, broker_id, zk_host, zk_port, zk_chroot)
fixture.open()
return fixture
def __init__(self, host, port, broker_id, zk_host, zk_port, zk_chroot):
self.host = host
self.port = port
self.broker_id = broker_id
self.zk_host = zk_host
self.zk_port = zk_port
self.zk_chroot = zk_chroot
self.tmp_dir = None
self.child = None
def open(self):
self.tmp_dir = tempfile.mkdtemp()
print("*** Running local Kafka instance")
print(" host = %s" % self.host)
print(" port = %s" % self.port)
print(" broker_id = %s" % self.broker_id)
print(" zk_host = %s" % self.zk_host)
print(" zk_port = %s" % self.zk_port)
print(" zk_chroot = %s" % self.zk_chroot)
print(" tmp_dir = %s" % self.tmp_dir)
# Create directories
os.mkdir(os.path.join(self.tmp_dir, "logs"))
os.mkdir(os.path.join(self.tmp_dir, "data"))
# Generate configs
properties = os.path.join(self.tmp_dir, "kafka.properties")
render_template("./test/resources/kafka.properties", properties, vars(self))
# Configure Kafka child process
self.child = SubprocessFixture(kafka_run_class_args(
"kafka.Kafka", properties
))
self.child.configure_stdout(os.path.join(self.tmp_dir, "stdout.txt"))
self.child.configure_stderr(os.path.join(self.tmp_dir, "stderr.txt"))
# Party!
print("*** Creating Zookeeper chroot node...")
proc = subprocess.Popen(kafka_run_class_args(
"org.apache.zookeeper.ZooKeeperMain",
"-server", "%s:%d" % (self.zk_host, self.zk_port),
"create", "/%s" % self.zk_chroot, "kafka-python"
))
if proc.wait() != 0:
print("*** Failed to create Zookeeper chroot node")
raise RuntimeError("Failed to create Zookeeper chroot node")
print("*** Done!")
print("*** Starting Kafka...")
self.child.start()
self.child.wait_for(r"\[Kafka Server \d+\], started")
print("*** Done!")
def close(self):
print("*** Stopping Kafka...")
self.child.stop()
self.child = None
print("*** Done!")
shutil.rmtree(self.tmp_dir)
class TestKafkaClient(unittest.TestCase):
@classmethod
def setUpClass(cls):
if os.environ.has_key('KAFKA_URI'):
parse = urlparse(os.environ['KAFKA_URI'])
(host, port) = (parse.hostname, parse.port)
cls.server = ExternalKafkaFixture(host, port)
cls.client = KafkaClient(host, port)
else:
port = get_open_port()
cls.server = KafkaFixture("localhost", port, 0)
cls.server.start()
cls.server.wait_for("Kafka server started")
cls.client = KafkaClient("localhost", port)
def setUpClass(cls): # noqa
cls.zk = ZookeeperFixture.instance()
cls.server = KafkaFixture.instance(0, cls.zk.host, cls.zk.port)
cls.client = KafkaClient(cls.server.host, cls.server.port)
@classmethod
def tearDownClass(cls):
def tearDownClass(cls): # noqa
cls.client.close()
cls.server.close()
cls.zk.close()
#####################
# Produce Tests #
@@ -150,7 +340,7 @@ class TestKafkaClient(unittest.TestCase):
def test_produce_many_simple(self):
produce = ProduceRequest("test_produce_many_simple", 0, messages=[
create_message("Test message %d" % i) for i in range(100)
])
])
for resp in self.client.send_produce_request([produce]):
self.assertEquals(resp.error, 0)
@@ -176,7 +366,7 @@ class TestKafkaClient(unittest.TestCase):
def test_produce_10k_simple(self):
produce = ProduceRequest("test_produce_10k_simple", 0, messages=[
create_message("Test message %d" % i) for i in range(10000)
])
])
for resp in self.client.send_produce_request([produce]):
self.assertEquals(resp.error, 0)
@@ -186,6 +376,8 @@ class TestKafkaClient(unittest.TestCase):
self.assertEquals(offset.offsets[0], 10000)
def test_produce_many_gzip(self):
if not has_gzip():
return
message1 = create_gzip_message(["Gzipped 1 %d" % i for i in range(100)])
message2 = create_gzip_message(["Gzipped 2 %d" % i for i in range(100)])
@@ -199,6 +391,8 @@ class TestKafkaClient(unittest.TestCase):
self.assertEquals(offset.offsets[0], 200)
def test_produce_many_snappy(self):
if not has_snappy():
return
message1 = create_snappy_message(["Snappy 1 %d" % i for i in range(100)])
message2 = create_snappy_message(["Snappy 2 %d" % i for i in range(100)])
@@ -212,6 +406,8 @@ class TestKafkaClient(unittest.TestCase):
self.assertEquals(offset.offsets[0], 200)
def test_produce_mixed(self):
if not has_gzip() or not has_snappy():
return
message1 = create_message("Just a plain message")
message2 = create_gzip_message(["Gzipped %d" % i for i in range(100)])
message3 = create_snappy_message(["Snappy %d" % i for i in range(100)])
@@ -225,7 +421,6 @@ class TestKafkaClient(unittest.TestCase):
(offset, ) = self.client.send_offset_request([OffsetRequest("test_produce_mixed", 0, -1, 1)])
self.assertEquals(offset.offsets[0], 201)
def test_produce_100k_gzipped(self):
req1 = ProduceRequest("test_produce_100k_gzipped", 0, messages=[
create_gzip_message(["Gzipped batch 1, message %d" % i for i in range(50000)])
@@ -260,7 +455,7 @@ class TestKafkaClient(unittest.TestCase):
self.assertEquals(fetch_resp.error, 0)
self.assertEquals(fetch_resp.topic, "test_consume_none")
self.assertEquals(fetch_resp.partition, 0)
messages = list(fetch_resp.messages)
self.assertEquals(len(messages), 0)
@@ -301,7 +496,7 @@ class TestKafkaClient(unittest.TestCase):
fetch1 = FetchRequest("test_produce_consume_many", 0, 0, 1024)
(fetch_resp1,) = self.client.send_fetch_request([fetch1])
self.assertEquals(fetch_resp1.error, 0)
self.assertEquals(fetch_resp1.highwaterMark, 100)
messages = list(fetch_resp1.messages)
@@ -365,7 +560,7 @@ class TestKafkaClient(unittest.TestCase):
(resp,) = self.client.send_offset_fetch_request("group", [req])
self.assertEquals(resp.error, 0)
self.assertEquals(resp.offset, 42)
self.assertEquals(resp.metadata, "") # Metadata isn't stored for now
self.assertEquals(resp.metadata, "") # Metadata isn't stored for now
# Producer Tests
@@ -389,30 +584,21 @@ class TestKafkaClient(unittest.TestCase):
self.assertEquals(len(messages), 1)
self.assertEquals(messages[0].message.value, "three")
class TestConsumer(unittest.TestCase):
class TestKafkaConsumer(unittest.TestCase):
@classmethod
def setUpClass(cls):
# Broker 0
port = get_open_port()
cls.server1 = KafkaFixture("localhost", port, 0)
cls.server1.start()
cls.server1.wait_for("Kafka server started")
# Broker 1
zk = cls.server1.zk_chroot
port = get_open_port()
cls.server2 = KafkaFixture("localhost", port, 1, zk)
cls.server2.start()
cls.server2.wait_for("Kafka server started")
# Client bootstraps from broker 1
cls.client = KafkaClient("localhost", port)
def setUpClass(cls): # noqa
cls.zk = ZookeeperFixture.instance()
cls.server1 = KafkaFixture.instance(0, cls.zk.host, cls.zk.port)
cls.server2 = KafkaFixture.instance(1, cls.zk.host, cls.zk.port)
cls.client = KafkaClient(cls.server2.host, cls.server2.port)
@classmethod
def tearDownClass(cls):
def tearDownClass(cls): # noqa
cls.client.close()
cls.server1.close()
cls.server2.close()
cls.zk.close()
def test_consumer(self):
# Produce 100 messages to partition 0
@@ -440,7 +626,8 @@ class TestConsumer(unittest.TestCase):
all_messages.append(message)
self.assertEquals(len(all_messages), 200)
self.assertEquals(len(all_messages), len(set(all_messages))) # make sure there are no dupes
# Make sure there are no duplicates
self.assertEquals(len(all_messages), len(set(all_messages)))
consumer.seek(-10, 2)
all_messages = []
@@ -456,6 +643,8 @@ class TestConsumer(unittest.TestCase):
self.assertEquals(len(all_messages), 13)
consumer.stop()
def test_pending(self):
# Produce 10 messages to partition 0 and 1
@@ -477,7 +666,9 @@ class TestConsumer(unittest.TestCase):
self.assertEquals(consumer.pending(), 20)
self.assertEquals(consumer.pending(partitions=[0]), 10)
self.assertEquals(consumer.pending(partitions=[1]), 10)
consumer.stop()
if __name__ == "__main__":
logging.basicConfig(level=logging.DEBUG)
unittest.main()
unittest.main()

58
test/resources/kafka.properties Normal file
View File

@@ -0,0 +1,58 @@
# 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.
############################# Server Basics #############################
broker.id={broker_id}
############################# Socket Server Settings #############################
port={port}
host.name={host}
num.network.threads=2
num.io.threads=2
socket.send.buffer.bytes=1048576
socket.receive.buffer.bytes=1048576
socket.request.max.bytes=104857600
############################# Log Basics #############################
log.dir={tmp_dir}/data
num.partitions=2
############################# Log Flush Policy #############################
log.flush.interval.messages=10000
log.flush.interval.ms=1000
############################# Log Retention Policy #############################
log.retention.hours=168
log.segment.bytes=536870912
log.cleanup.interval.mins=1
############################# Zookeeper #############################
zk.connect={zk_host}:{zk_port}/{zk_chroot}
zk.connection.timeout.ms=1000000
kafka.metrics.polling.interval.secs=5
kafka.metrics.reporters=kafka.metrics.KafkaCSVMetricsReporter
kafka.csv.metrics.dir={tmp_dir}
kafka.csv.metrics.reporter.enabled=false
log.cleanup.policy=delete

16
test/resources/log4j.properties
View File

@@ -12,19 +12,13 @@
# 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.
log4j.rootLogger=TRACE, stdout
log4j.rootLogger=INFO, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=[%d] %p %m (%c)%n
#log4j.appender.fileAppender=org.apache.log4j.FileAppender
#log4j.appender.fileAppender.File=kafka-request.log
#log4j.appender.fileAppender.layout=org.apache.log4j.PatternLayout
#log4j.appender.fileAppender.layout.ConversionPattern= %-4r [%t] %-5p %c %x - %m%n
# Turn on all our debugging info
#log4j.logger.kafka=INFO
#log4j.logger.org.I0Itec.zkclient.ZkClient=DEBUG
log4j.logger.kafka=DEBUG, stdout
log4j.logger.org.I0Itec.zkclient.ZkClient=INFO, stdout
log4j.logger.org.apache.zookeeper=INFO, stdout

117
test/resources/server.properties
View File

@@ -1,117 +0,0 @@
# 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.
broker.id=%(broker.id)d
############################# Socket Server Settings #############################
# The port the socket server listens on
port=%(kafka.port)d
# Hostname the broker will bind to and advertise to producers and consumers.
# If not set, the server will bind to all interfaces and advertise the value returned from
# from java.net.InetAddress.getCanonicalHostName().
#host.name=localhost
# The number of threads handling network requests
num.network.threads=2
# The number of threads doing disk I/O
num.io.threads=2
# The send buffer (SO_SNDBUF) used by the socket server
socket.send.buffer.bytes=1048576
# The receive buffer (SO_RCVBUF) used by the socket server
socket.receive.buffer.bytes=1048576
# The maximum size of a request that the socket server will accept (protection against OOM)
socket.request.max.bytes=104857600
############################# Log Basics #############################
# The directory under which to store log files
log.dir=%(kafka.tmp.dir)s
# The number of logical partitions per topic per server. More partitions allow greater parallelism
# for consumption, but also mean more files.
num.partitions=%(kafka.partitions)d
############################# 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.messages=10000
# The maximum amount of time a message can sit in a log before we force a flush
log.flush.interval.ms=1000
# Per-topic overrides for log.flush.interval.ms
#log.flush.intervals.ms.per.topic=topic1:1000, topic2:3000
############################# 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.bytes.
#log.retention.bytes=1073741824
# The maximum size of a log segment file. When this size is reached a new log segment will be created.
log.segment.bytes=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/%(zk.chroot)s
# Timeout in ms for connecting to zookeeper
zk.connection.timeout.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
log.cleanup.policy=delete

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# 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.
dataDir={tmp_dir}
clientPortAddress={host}
clientPort={port}
maxClientCnxns=0