standalone.conf

#
# Copyright 2016 Yahoo Inc.
# 
# Licensed 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.
# 

### --- General broker settings --- ###

# Zookeeper quorum connection string
zookeeperServers=

# Global Zookeeper quorum connection string
globalZookeeperServers=

brokerServicePort=6650

# Port to use to server HTTP request
webServicePort=8080

# Control whether to bind directly on localhost rather than on normal hostname
bindOnLocalhost=true

# Name of the cluster to which this broker belongs to
clusterName=standalone

# Zookeeper session timeout in milliseconds
zooKeeperSessionTimeoutMillis=30000

# Time to wait for broker graceful shutdown. After this time elapses, the process will be killed
brokerShutdownTimeoutMs=3000

# Enable backlog quota check. Enforces action on topic when the quota is reached
backlogQuotaCheckEnabled=true

# How often to check for topics that have reached the quota
backlogQuotaCheckIntervalInSeconds=60

# Default per-topic backlog quota limit
backlogQuotaDefaultLimitGB=10

# Enable the deletion of inactive topics
brokerDeleteInactiveTopicsEnabled=true

# How often to check for inactive topics
brokerDeleteInactiveTopicsFrequencySeconds=60

# How frequently to proactively check and purge expired messages 
messageExpiryCheckIntervalInMinutes=5

# Enable check for minimum allowed client library version
clientLibraryVersionCheckEnabled=false

# Allow client libraries with no version information 
clientLibraryVersionCheckAllowUnversioned=true

# Path for the file used to determine the rotation status for the broker when responding
# to service discovery health checks
statusFilePath=/usr/local/apache/htdocs

### --- Authentication --- ###

# Enable authentication
authenticationEnabled=false

# Autentication provider name list, which is comma separated list of class names
authenticationProviders=false

# Enforce authorization
authorizationEnabled=false

# Role names that are treated as "super-user", meaning they will be able to do all admin
# operations and publish/consume from all topics
superUserRoles=

# Authentication settings of the broker itself. Used when the broker connects to other brokers,
# either in same or other clusters
brokerClientAuthenticationPlugin=
brokerClientAuthenticationParameters=


### --- BookKeeper Client --- ###

# Authentication plugin to use when connecting to bookies
bookkeeperClientAuthenticationPlugin=

# BookKeeper auth plugin implementatation specifics parameters name and values
bookkeeperClientAuthenticationParametersName=
bookkeeperClientAuthenticationParameters=

# Timeout for BK add / read operations 
bookkeeperClientTimeoutInSeconds=30

# Speculative reads are initiated if a read request doesn't complete within a certain time
# Using a value of 0, is disabling the speculative reads
bookkeeperClientSpeculativeReadTimeoutInMillis=0

# Enable bookies health check. Bookies that have more than the configured number of failure within
# the interval will be quarantined for some time. During this period, new ledgers won't be created
# on these bookies
bookkeeperClientHealthCheckEnabled=true
bookkeeperClientHealthCheckIntervalSeconds=60
bookkeeperClientHealthCheckErrorThresholdPerInterval=5
bookkeeperClientHealthCheckQuarantineTimeInSeconds=1800

# Enable rack-aware bookie selection policy. BK will chose bookies from different racks when
# forming a new bookie ensemble 
bookkeeperClientRackawarePolicyEnabled=true

# Enable bookie isolation by specifying a list of bookie groups to choose from. Any bookie 
# outside the specified groups will not be used by the broker 
bookkeeperClientIsolationGroups=

### --- Managed Ledger --- ###

# Number of bookies to use when creating a ledger
managedLedgerDefaultEnsembleSize=1

# Number of copies to store for each message
managedLedgerDefaultWriteQuorum=1

# Number of guaranteed copies (acks to wait before write is complete)
managedLedgerDefaultAckQuorum=1

# Amount of memory to use for caching data payload in managed ledger. This memory
# is allocated from JVM direct memory and it's shared across all the topics
# running  in the same broker 
managedLedgerCacheSizeMB=1024

# Threshold to which bring down the cache level when eviction is triggered
managedLedgerCacheEvictionWatermark=0.9

# Rate limit the amount of writes generated by consumer acking the messages
managedLedgerDefaultMarkDeleteRateLimit=0.1

# Max number of entries to append to a ledger before triggering a rollover
# A ledger rollover is triggered on these conditions
#  * Either the max rollover time has been reached
#  * or max entries have been written to the ledged and at least min-time 
#    has passed
managedLedgerMaxEntriesPerLedger=50000

# Minimum time between ledger rollover for a topic
managedLedgerMinLedgerRolloverTimeMinutes=10

# Maximum time before forcing a ledger rollover for a topic
managedLedgerMaxLedgerRolloverTimeMinutes=240

# Max number of entries to append to a cursor ledger
managedLedgerCursorMaxEntriesPerLedger=50000

# Max time before triggering a rollover on a cursor ledger
managedLedgerCursorRolloverTimeInSeconds=14400



### --- Load balancer --- ### 

# Enable load balancer
loadBalancerEnabled=false

# Strategy to assign a new bundle
loadBalancerPlacementStrategy=weightedRandomSelection

# Percentage of change to trigger load report update
loadBalancerReportUpdateThresholdPercentage=10

# maximum interval to update load report
loadBalancerReportUpdateMaxIntervalMinutes=15

# Path for the script used to retrieve system usage
loadBalancerHostUsageScriptPath=

# Frequency of sar report to collect
loadBalancerHostUsageCheckIntervalMinutes=1

# Load shedding interval. Broker periodically checks whether some traffic should be offload from
# some over-loaded broker to other under-loaded brokers   
loadBalancerSheddingIntervalMinutes=30

# Prevent the same topics to be shed and moved to other broker more that once within this timeframe 
loadBalancerSheddingGracePeriodMinutes=30

# Usage threshold to determine a broker as under-loaded 
loadBalancerBrokerUnderloadedThresholdPercentage=1

# Usage threshold to determine a broker as over-loaded
loadBalancerBrokerOverloadedThresholdPercentage=85

# Interval to update namespace bundle resource quotat
loadBalancerResourceQuotaUpdateIntervalMinutes=15

# Usage threshold to determine a broker is having just right level of load
loadBalancerBrokerComfortLoadLevelPercentage=65

# enable/disable namespace bundle auto split
loadBalancerAutoBundleSplitEnabled=false

# interval to detect & split hot namespace bundle
loadBalancerNamespaceBundleSplitIntervalMinutes=15

# maximum topics in a bundle, otherwise bundle split will be triggered
loadBalancerNamespaceBundleMaxTopics=1000

# maximum sessions (producers + consumers) in a bundle, otherwise bundle split will be triggered
loadBalancerNamespaceBundleMaxSessions=1000

# maximum msgRate (in + out) in a bundle, otherwise bundle split will be triggered
loadBalancerNamespaceBundleMaxMsgRate=1000

# maximum bandwidth (in + out) in a bundle, otherwise bundle split will be triggered
loadBalancerNamespaceBundleMaxBandwidthMbytes=100

# maximum number of bundles in a namespace
loadBalancerNamespaceMaximumBundles=128

### --- Replication --- ###

# Enable replication metrics
replicationMetricsEnabled=true

# Max number of connections to open for each broker in a remote cluster
# More connections host-to-host lead to better throughput over high-latency
# links. 
replicationConnectionsPerBroker=16

# Replicator producer queue size
replicationProducerQueueSize=1000

# Default message retention time
defaultRetentionTimeInMinutes=0

# Default retention size
defaultRetentionSizeInMB=0

# How often to check whether the connections are still alive
keepAliveIntervalSeconds=30

# How often broker checks for inactive topics to be deleted (topics with no subscriptions and no one connected)
brokerServicePurgeInactiveFrequencyInSeconds=60