This is documentation for MapR Version 5.0. You can also refer to MapR documentation for the latest release.

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ParameterDescription
mapreduce.job.hdfs-serversDefault value: ${fs.defaultFS} Default source: yarn-default.xml
yarn.acl.enableIndicates whether ACLs are enabled.
Default value: FALSE
Default source: yarn-default.xml
yarn.admin.aclACL of who can be admin of the YARN cluster.
Default value: *
Default source: yarn-default.xml
yarn.am.liveness-monitor.expiry-interval-msThe expiry interval for application master reporting.
Default value: 600000
Default source: yarn-default.xml
yarn.client.application-client-protocol.poll-interval-msThe interval that the yarn client library uses to poll the completion status of the asynchronous API of application client protocol.
Default value: 200
Default source: yarn-default.xml
yarn.client.failover-proxy-provider

When HA is enabled, the class to be used by Clients, AMs and NMs to failover to the Active RM. It should extend org.apache.hadoop.yarn.client.RMFailoverProxyProvider.

Default value: org.apache.hadoop.yarn.client.ConfiguredRMFailoverProxyProvider
Default source: yarn-default.xml

When you configure failover configure.sh may change the default value by adding a value for this parameter in yarn-site.xml. For more information, see ResourceManager Configuration Properties.

yarn.client.failover-retriesWhen HA is enabled, the number of retries per attempt to connect to a ResourceManager. In other words, it is the ipc.client.connect.max.retries to be used during failover attempts. Default value: 0 Default source: yarn-default.xml
yarn.client.failover-retries-on-socket-timeoutsWhen HA is enabled, the number of retries per attempt to connect to a ResourceManager on socket timeouts. In other words, it is the ipc.client.connect.max.retries.on.timeouts to be used during failover attempts. Default value: 0 Default source: yarn-default.xml
yarn.client.max-nodemanagers-proxiesMaximum number of proxy connections for node manager. It should always be more than 1. NMClient and MRAppMaster will use this to cache connection with node manager. There will be at max one connection per node manager. Ex. configuring it to a value of 5 will make sure that client will at max have 5 connections cached with 5 different node managers. These connections will be timed out if idle for more than system wide idle timeout period. The token if used for authentication then it will be used only at connection creation time. If new token is received then earlier connection should be closed in order to use newer token. This and (yarn.client.nodemanager-client-async.thread-pool-max-size) are related and should be sync (no need for them to be equal).
Default value: 0
Default source: yarn-default.xml
yarn.client.nodemanager-client-async.thread-pool-max-sizeMax number of threads in NMClientAsync to process container management events.
Default value: 500
Default source: yarn-default.xml
yarn.client.nodemanager-connect.max-wait-msDefault value: 900000
Default source: yarn-default.xml
yarn.client.nodemanager-connect.retry-interval-msDefault value: 10000
Default source: yarn-default.xml
yarn.dfs-logging.dir-globDefault value: maprfs:////var/mapr/local/*/logs/yarn/userlogs
Default source: Code
yarn.dfs-logging.handler-classDefault value:com.mapr.hadoop.yarn.util.MapRFSLoggingHandler
Default source: Code
yarn.external.token.managerDefault value: com.mapr.hadoop.yarn.security.MapRTicketManager
Default source: Code
yarn.http.policyConfigures the HTTP endpoint for YARN Daemons.The following values are supported:
-HTTP_ONLY : Service is provided only on http
-HTTPS_ONLY : Service is provided only on https
Default value: HTTP_ONLY
Default source: yarn-default.xml
yarn.ipc.rpc.class

RPC class implementation.
Default value: org.apache.hadoop.yarn.ipc.HadoopYarnProtoRPC
Default source: yarn-default.xml

yarn.log-aggregation.retain-check-interval-seconds

How long to wait between aggregated log retention checks. If set to 0 or a negative value, then the value is computed as one-tenth of the aggregated log retention time.
Default value: -1
Default source: yarn-default.xml

See YARN Log Aggregation.

yarn.log-aggregation.retain-seconds

How long to keep aggregation logs before deleting them. -1 disables.
Default value: 2592000
Default source: code

See YARN Log Aggregation.

yarn.log-aggregation-enable

Whether to enable log aggregation.
Default value: FALSE
Default source: yarn-default.xml

See YARN Log Aggregation.

yarn.mapr.ticket.expirationDefault value: 604800000
Default source: code
yarn.nm.liveness-monitor.expiry-interval-msHow long to wait until a NodeManager is considered dead.
Default value: 600000
Default source: yarn-default.xml
yarn.nodemanager.addressThe address of the container manager in the NM.
Default value: ${yarn.nodemanager.hostname}:0
Default source: yarn-default.xml
yarn.nodemanager.admin-envEnvironment variables that should be forwarded from the NodeManager's environment to the container's environment. Default value: MALLOC_ARENA_MAX=$MALLOC_ARENA_MAX
Default source: yarn-default.xml
yarn.nodemanager.aux-servicesThe valid service name should only contain a-zA-Z0-9_ and can not start with numbers
Default value: mapreduce_shuffle,mapr_direct_shuffle
Default source: code
yarn.nodemanager.aux-services.mapr_direct_shuffle.classDefault value: com.mapr.hadoop.mapred.LocalVolumeAuxService
Default source: code
yarn.nodemanager.aux-services.mapreduce_shuffle.class

Default value: org.apache.hadoop.mapred.ShuffleHandler
Default source: yarn-default.xml

yarn.nodemanager.container-executor.classIdentifies who will execute (launch) the containers.
Default value: org.apache.hadoop.yarn.server.nodemanager.LinuxContainerExecutor
Default source: code
yarn.nodemanager.container-manager.thread-countNumber of threads the container manager uses.
Default value: 20
Default source:yarn-default.xml
yarn.nodemanager.container-monitor.interval-msHow often to monitor containers.
Default value: 3000
Default source: yarn-default.xml
yarn.nodemanager.container-monitor.procfs-tree.smaps-based-rss.enabledDefault value: FALSE
Default source: yarn-default.xml
yarn.nodemanager.delete.debug-delay-secNumber of seconds after an application finishes before the NodeManager's DeletionService will delete the application's localized file directory and log directory. To diagnose Yarn application problems, set this property's value large enough (for example, to 600 = 10 minutes) to permit examination of these directories. After changing the property's value, you must restart the NodeManager in order for it to have an effect. The roots of Yarn applications' work directories are configurable with the yarn.nodemanager.local-dirs property (see below), and the roots of the Yarn applications' log directories is configurable with the yarn.nodemanager.log-dirs property (see also below). Default value: 0 Default source: yarn-default.xml
yarn.nodemanager.delete.thread-countNumber of threads used in cleanup.
Default value: 4
Default source: yarn-default.xml
yarn.nodemanager.disk-health-checker.interval-msFrequency of running disk health checker code.
Default value: 1200000
Default source: yarn-default.xml
yarn.nodemanager.disk-health-checker.max-disk-utilization-per-disk-percentageDefault value: 90
Default source: yarn-default.xml
yarn.nodemanager.disk-health-checker.min-free-space-per-disk-mbDefault value: 0
Default source: yarn-default.xml
yarn.nodemanager.disk-health-checker.min-healthy-disks

The minimum fraction of number of disks to be healthy for the nodemanager to launch new containers. This correspond to both yarn-nodemanager.local-dirs and yarn.nodemanager.log-dirs. i.e. If there are less number of healthy local-dirs (or log-dirs) available, then new containers will not be launched on this node.

Default value: 0.25
Default source: yarn-default.xml

yarn.nodemanager.docker-container-executor.exec-nameDefault value: /usr/bin/docker
Default source: yarn-default.xml
yarn.nodemanager.env-whitelist

Environment variables that containers may override rather than use NodeManager's default.

Default value: JAVA_HOME,HADOOP_COMMON_HOME,HADOOP_HDFS_HOME,HADOOP_CONF_DIR,HADOOP_YARN_HOME
Default source: yarn-default.xml

yarn.nodemanager.external.token.localizerDefault value: com.mapr.hadoop.yarn.nodemanager.MapRTicketLocalizer
Default source: code
yarn.nodemanager.health-checker.interval-msFrequency of running node health script.
Default value: 600000
Default source: yarn-default.xml
yarn.nodemanager.health-checker.script.timeout-msScript time out period.
Default value: 1200000
Default source: yarn-default.xml
yarn.nodemanager.hostnameThe hostname of the NM.
Default value: 0.0.0.0
Default source: yarn-default.xml
yarn.nodemanager.keytabKeytab for NM.
Default value: /etc/krb5.keytab
Default source: yarn-default.xml
yarn.nodemanager.linux-container-executor.cgroups.hierarchyThe cgroups hierarchy under which to place YARN proccesses (cannot contain commas). If yarn.nodemanager.linux-container-executor.cgroups.mount is false (that is, if cgroups have been pre-configured), then this cgroups hierarchy must already exist and be writable by the NodeManager user, otherwise the NodeManager may fail. Only used when the LCE resources handler is set to the CgroupsLCEResourcesHandler.
Default value: /hadoop-yarn
Default source: yarn-default.xml
yarn.nodemanager.linux-container-executor.cgroups.mountWhether the LCE should attempt to mount cgroups if not found. Only used when the LCE resources handler is set to the CgroupsLCEResourcesHandler.
Default value: false
Default source: yarn-default.xml
yarn.nodemanager.linux-container-executor.cgroups.strict-resource-usageDefault value: FALSE
Default source: yarn-default.xml
yarn.nodemanager.linux-container-executor.nonsecure-mode.limit-usersDefault value: TRUE
Default source: yarn-default.xml
yarn.nodemanager.linux-container-executor.nonsecure-mode.local-userDefault value: nobody
Default source: yarn-default.xml
yarn.nodemanager.linux-container-executor.nonsecure-mode.user-patternThe allowed pattern for UNIX user names enforced by Linux-container-executor when used in nonsecure mode (use case for this is using cgroups). The default value is taken from /usr/sbin/adduser.
Default value: ^[_.A-Za-z0-9][-@_.A-Za-z0-9]{0,255}?[$]?$
Default source: yarn-default.xml
yarn.nodemanager.linux-container-executor.resources-handler.classThe class which should help the LCE handle resources.
Default value: org.apache.hadoop.yarn.server.nodemanager.util.DefaultLCEResourcesHandler Default source: yarn-default.xml
yarn.nodemanager.local-cache.max-files-per-directoryIt limits the maximum number of files which will be localized in a single local directory. If the limit is reached then sub-directories will be created and new files will be localized in them. If it is set to a value less than or equal to 36 [which are sub-directories (0-9 and then a-z)] then NodeManager will fail to start. For example; [for public cache] if this is configured with a value of 40 ( 4 files + 36 sub-directories) and the local-dir is /tmp/local-dir1, then it will allow 4 files to be created directly inside /tmp/local-dir1/filecache. For files that are localized further, it will create a sub-directory "0" inside /tmp/local-dir1/filecache and will localize files inside it until it becomes full. If a file is removed from a sub-directory that is marked full, then that sub-directory will be used back again to localize files. Default value: 8192 Default source: yarn-default.xml
yarn.nodemanager.local-dirsList of directories to store localized files in. An application's localized file directory will be found in: ${yarn.nodemanager.local-dirs}/usercache/${user}/appcache/application_${appid}. Individual containers' work directories, called container_${contid}, will be subdirectories of this. Default value: ${hadoop.tmp.dir}/nm-local-dir Default source: yarn-default.xml
yarn.nodemanager.localizer.addressAddress where the localizer IPC is.
Default value: ${yarn.nodemanager.hostname}:8040
yarn.nodemanager.localizer.cache.cleanup.interval-msInterval in between cache cleanups.
Default value: 60000
Default source: yarn-default.xml
yarn.nodemanager.localizer.cache.target-size-mbTarget size of localizer cache in MB, per local directory.
Default value: 10240
Default source: yarn-default.xml
yarn.nodemanager.localizer.client.thread-countNumber of threads to handle localization requests.
Default value: 5
Default source: yarn-default.xml
yarn.nodemanager.localizer.fetch.thread-countNumber of threads to use for localization fetching.
Default value: 4
Default source: yarn-default.xml
yarn.nodemanager.log.retain-secondsTime in seconds to retain user logs. Only applicable if log aggregation is disabled.
Default value: 10800
Default source: yarn-default.xml
yarn.nodemanager.log-aggregation.compression-typeT-file compression types used to compress aggregated logs.
Default value: none
Default source: yarn-default.xml
yarn.nodemanager.log-aggregation.roll-monitoring-interval-secondsDefault value: -1
Default source: yarn-default.xml
yarn.nodemanager.log-dirsWhere to store container logs. An application's localized log directory will be found in ${yarn.nodemanager.log-dirs}/application_${appid}. Individual containers' log directories will be below this, in directories named container_{$contid}. Each container directory will contain the files stderr, stdin, and syslog generated by that container. Default value: ${yarn.log.dir}/userlogs Default source: yarn-default.xml
yarn.nodemanager.pmem-check-enabledWhether physical memory limits will be enforced for containers.
Default value: true
Default source: yarn-default.xml
yarn.nodemanager.process-kill-wait.msMax time to wait for a process to come up when trying to cleanup a container.
Default value: 2000
Default source: yarn-default.xml
yarn.nodemanager.recovery.enabledDefault value: FALSE
Default source: yarn-default.xml
yarn.nodemanager.remote-app-log-dirWhere to aggregate logs to.
Default value: /tmp/logs
Default source: yarn-default.xml
yarn.nodemanager.remote-app-log-dir-suffixThe remote log dir will be created at {yarn.nodemanager.remote-app-log-dir}/${user}/{thisParam}
Default value: logs
Default source: yarn-default.xml
yarn.nodemanager.resource.cpu-vcores

Number of CPU cores that can be allocated for containers.

Default value: ${nodemanager.resource.cpu-vcores}
Default source: code

yarn.nodemanager.resource.io-spindlesDefault value: ${nodemanager.resource.io-spindles}
Default source: code
yarn.nodemanager.resource.memory-mb

Amount of physical memory, in MB, that can be allocated for containers.

Default value: ${nodemanager.resource.memory-mb}
Default source: code

yarn.nodemanager.resource.percentage-physical-cpu-limitDefault value: 100
Default source: yarn-default.xml
yarn.nodemanager.resourcemanager.minimum.versionThe minimum allowed version of a resourcemanager that a nodemanager will connect to. The valid values are NONE (no version checking), EqualToNM (the resourcemanager's version is equal to or greater than the NM version), or a Version String. Default value: NONE
Default source: yarn-default.xml
yarn.nodemanager.sleep-delay-before-sigkill.msNumber of ms to wait between sending a SIGTERM and SIGKILL to a container.
Default value: 250
Default source: yarn-default.xml
yarn.nodemanager.vmem-check-enabledWhether virtual memory limits will be enforced for containers.
Default value: false
Default source: yarn-default.xml
yarn.nodemanager.vmem-pmem-ratioRatio between virtual memory to physical memory when setting memory limits for containers. Container allocations are expressed in terms of physical memory, and virtual memory usage is allowed to exceed this allocation by this ratio. Default value: 2.1
Default source: yarn-default.xml
yarn.nodemanager.webapp.addressNM Webapp address.
Default value: ${yarn.nodemanager.hostname}:8042 Default source: yarn-default.xml
yarn.nodemanager.windows-container.cpu-limit.enabledDefault value: FALSE
Default source: yarn-default.xml
yarn.nodemanager.windows-container.memory-limit.enabledDefault value: FALSE
Default source: yarn-default.xml
yarn.resourcemanager.address

The address of the applications manager interface in the ResourceManager.
Default value: ${yarn.resourcemanager.hostname}:8032
Default source: yarn-default.xml

When you configure failover configure.sh may change the default value by adding a value for this parameter in yarn-site.xml. For more information, see ResourceManager Configuration Properties.

yarn.resourcemanager.admin.address

The address of the ResourceManager admin interface.
Default value: ${yarn.resourcemanager.hostname}:8033
Default source: yarn-default.xml

When you configure failover configure.sh may change the default value by adding a value for this parameter in yarn-site.xml. For more information, see ResourceManager Configuration Properties.

yarn.resourcemanager.admin.client.thread-countNumber of threads used to handle the ResourceManager admin interface.
Default value: 1
Default source: yarn-default.xml
yarn.resourcemanager.am.max-attemptsThe maximum number of application attempts. This is a global setting for all ApplicationMasters. Each ApplicationMaster can specify its individual maximum number of application attempts via the API, but the individual number cannot be more than the global upper bound. If it is, the ResourceManager will override it. The default number is set to 2, to allow at least one retry for the ApplicationMaster.
Default value: 2
Default source: yarn-default.xml
yarn.resourcemanager.application-tokens.master-key-rolling-interval-secsInterval for the roll over for the master key used to generate application tokens.
Default value: 86400
Default source: yarn-default.xml
yarn.resourcemanager.aux-servicesDefault value: RMVolumeManager
Default source: code
yarn.resourcemanager.aux-services.HSVolumeManager.classDefault value: com.mapr.hadoop.yarn.resourcemanager.RMVolumeManager
Default source: code
yarn.resourcemanager.aux-services.RMVolumeManager.classDefault value: com.mapr.hadoop.yarn.resourcemanager.RMVolumeManager
Default source: code
yarn.resourcemanager.client.thread-countThe number of threads used to handle applications manager requests.
Default value: 50
Default source: yarn-default.xml
yarn.resourcemanager.configuration.provider-classDefault value: org.apache.hadoop.yarn.LocalConfigurationProvider
Default source: yarn-default.xml
yarn.resourcemanager.connect.max-wait.msMaximum time to wait to establish connection to the ResourceManager.
Default value: 900000
Default source: yarn-default.xml
yarn.resourcemanager.connect.retry-interval.msHow often to retry connecting to the ResourceManager.
Default value: 30000
Default source: yarn-default.xml
yarn.resourcemanager.container.liveness-monitor.interval-msHow often to check that containers are still alive.
Default value: 600000
Default source: yarn-default.xml
yarn.resourcemanager.container-tokens.master-key-rolling-interval-secsInterval for the roll over for the master key used to generate container tokens. It is expected to be much greater than yarn.nm.liveness-monitor.expiry-interval-ms and yarn.rm.container-allocation.expiry-interval-ms. Otherwise the behavior is undefined. Default value: 86400 Default source: yarn-default.xml
yarn.resourcemanager.delayed.delegation-token.removal-interval-msInterval at which the delayed token removal thread runs.
Default value: 30000
Default source: yarn-default.xml
yarn.resourcemanager.dirDefault value: /var/mapr/cluster/yarn/rm
Default source: code
yarn.resourcemanager.fs.state-store.num-retriesDefault value: 0
Default source: yarn-default.xml
yarn.resourcemanager.fs.state-store.retry-interval-msDefault value: 1000
Default source: yarn-default.xml
yarn.resourcemanager.fs.state-store.retry-policy-spechdfs client retry policy specification. hdfs client retry is always enabled. Specified in pairs of sleep-time and number-of-retries and (t0, n0), (t1, n1), ..., the first n0 retries sleep t0 milliseconds on average, the following n1 retries sleep t1 milliseconds on average, and so on.
Default value: 2000, 500
Default source: yarn-default.xml
yarn.resourcemanager.fs.state-store.uriURI pointing to the location of the FileSystem path where RM state will be stored. This must be supplied when using org.apache.hadoop.yarn.server.resourcemanager.recovery.FileSystemRMStateStore as the value for yarn.resourcemanager.store.class Default value: /var/mapr/cluster/yarn/rm/system
Default source: code
yarn.resourcemanager.ha.automatic-failover.embeddedEnable embedded automatic failover. The embedded elector relies on the RM state store to handle fencing, and is primarily intended to be used in conjunction with ZKRMStateStore.
Default value: TRUE
Default source: yarn-default.xml
yarn.resourcemanager.ha.automatic-failover.enabledEnable automatic failover.
Default value: TRUE
Default source: yarn-default.xml
yarn.resourcemanager.ha.automatic-failover.zk-base-pathThe base znode path to use for storing leader information, when using ZooKeeper based leader election.
Default value: /yarn-leader-election
Default source: yarn-default.xml
yarn.resourcemanager.ha.custom-ha-rmaddressfinderDefault value: org.apache.hadoop.yarn.client.MapRZKBasedRMAddressFinder
Default source: code
yarn.resourcemanager.ha.enabledEnable RM high-availability. When enabled, (1) The RM starts in the Standby mode by default, and transitions to the Active mode when prompted to. (2) The nodes in the RM ensemble are listed in yarn.resourcemanager.ha.rm-ids (3) The id of each RM comes from yarn.resourcemanager.ha.id (4) The actual physical addresses come from the configs of the pattern - {rpc-config}.{id}
Default value: false
Default source: yarn-default.xml
yarn.resourcemanager.hostnameThe hostname of the ResourceManager.
Default value: 0.0.0.0
Default source: yarn-default.xml
yarn.resourcemanager.keytabThe keytab for the ResourceManager.
Default value: /etc/krb5.keytab
Default source: yarn-default.xml
yarn.resourcemanager.leveldb-state-store.pathDefault value: ${hadoop.tmp.dir}/yarn/system/rmstore
Default source: yarn-default.xml
yarn.resourcemanager.max-completed-applicationsThe maximum number of completed applications RM keeps.
Default value: 10000
Default source: yarn-default.xml
yarn.resourcemanager.nodemanager.minimum.versionThe minimum allowed version of a connecting nodemanager. The valid values are NONE (no version checking), EqualToRM (the nodemanager's version is equal to or greater than the RM version), or a Version String.
Default value: NONE
Default source: yarn-default.xml
yarn.resourcemanager.nodemanagers.heartbeat-interval-ms

The heart-beat interval in milliseconds for every NodeManager in the cluster.

Default value: 1000
Default source: yarn-default.xml 

yarn.resourcemanager.principal

The Kerberos principal for the ResourceManager.

Default value:mapr
Default source: code

yarn.resourcemanager.proxy-user-privileges.enabledDefault value: FALSE
Default source: yarn-default.xml
yarn.resourcemanager.recovery.enabled

Enable RM to recover state after starting. If true, then yarn.resourcemanager.store.class must be specified.
Default value: false

When you configure failover configure.sh may change the default value by adding a value for this parameter in yarn-site.xml. For more information, see ResourceManager Configuration Properties.

yarn.resourcemanager.resource-tracker.address

Default value: ${yarn.resourcemanager.hostname}:8031
Default source: yarn-default.xml

When you configure failover configure.sh may change the default value by adding a value for this parameter in yarn-site.xml. For more information, see ResourceManager Configuration Properties.

yarn.resourcemanager.resource-tracker.client.thread-count

Number of threads to handle resource tracker calls.

Default value: 50
Default source: yarn-default.xml

yarn.resourcemanager.scheduler.address

The address of the scheduler interface.]

Default value: ${yarn.resourcemanager.hostname}:8030
Default source: yarn-default.xml

When you configure failover configure.sh may change the default value by adding a value for this parameter in yarn-site.xml. For more information, see ResourceManager Configuration Properties.

yarn.resourcemanager.scheduler.class

The class to use as the resource scheduler.

Default value: org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler
Default source: code

yarn.resourcemanager.scheduler.client.thread-count

Number of threads to handle scheduler interface.

Default value: 50
Default source: yarn-default.xml

yarn.resourcemanager.scheduler.monitor.enable

Enable a set of periodic monitors (specified in yarn.resourcemanager.scheduler.monitor.policies) that affect the scheduler.

Default value: false
Default source: yarn-default.xml

yarn.resourcemanager.scheduler.monitor.policies

The list of SchedulingEditPolicy classes that interact with the scheduler. A particular module may be incompatible with the scheduler, other policies, or a configuration of either.

Default value: org.apache.hadoop.yarn.server.resourcemanager.monitor.capacity.ProportionalCapacityPreemptionPolicy
Default source: yarn-default.xml

yarn.resourcemanager.stagingDefault value: /var/mapr/cluster/yarn/rm/staging
Default source: code
yarn.resourcemanager.state-store.max-completed-applications

The maximum number of completed applications RM state store keeps, less than or equals to ${yarn.resourcemanager.max-completed-applications}. By default, it equals to ${yarn.resourcemanager.max-completed-applications}. This ensures that the applications kept in the state store are consistent with the applications remembered in RM memory. Any values larger than ${yarn.resourcemanager.max-completed-applications} will be reset to ${yarn.resourcemanager.max-completed-applications}. Note that this value impacts the RM recovery performance.Typically, a smaller value indicates better performance on RM recovery.

Default value: ${yarn.resourcemanager.max-completed-applications}
Default source: yarn-default.xml

yarn.resourcemanager.store.class

The class to use as the persistent store. If org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore is used, the store is implicitly fenced; meaning a single ResourceManager is able to use the store at any point in time. More details on this implicit fencing, along with setting up appropriate ACLs is discussed under yarn.resourcemanager.zk-state-store.root-node.acl.

Default value: org.apache.hadoop.yarn.server.resourcemanager.recovery.FileSystemRMStateStore
Default source: yarn-default.xml

yarn.resourcemanager.systemDefault value: /var/mapr/cluster/yarn/rm/system
Default source: code
yarn.resourcemanager.system-metrics-publisher.dispatcher.pool-sizeDefault value: 10
Default source: yarn-default.xml
yarn.resourcemanager.system-metrics-publisher.enabledDefault value: FALSE
Default source: yarn-default.xml
yarn.resourcemanager.webapp.address

The http address of the ResourceManager web application.

Default value: ${yarn.resourcemanager.hostname}:8088
Default source: yarn-default.xml 

When you configure failover configure.sh may change the default value by adding a value for this parameter in yarn-site.xml. For more information, see ResourceManager Configuration Properties.

yarn.resourcemanager.webapp.delegation-token-auth-filter.enabledDefault value: TRUE
Default source: yarn-default.xml
yarn.resourcemanager.webapp.https.address

The https adddress of the ResourceManager web application.

Default value: ${yarn.resourcemanager.hostname}:8090
Default source: yarn-default.xml

When you configure failover configure.sh may change the default value by adding a value for this parameter in yarn-site.xml. For more information, see ResourceManager Configuration Properties.

yarn.resourcemanager.work-preserving-recovery.enabledDefault value: TRUE
Default source: yarn-default.xml
yarn.resourcemanager.work-preserving-recovery.scheduling-wait-msDefault value: 10000
Default source: yarn-default.xml
yarn.resourcemanager.zk-acl

ACL's to be used for ZooKeeper znodes.

Default value: world:anyone:rwcda
Default source: yarn-default.xml

yarn.resourcemanager.zk-num-retries

Number of times RM tries to connect to ZooKeeper.

Default value: 1000
Default source: yarn-default.xml 

yarn.resourcemanager.zk-retry-interval-ms

Retry interval in milliseconds when connecting to ZooKeeper.

Default value: 1000
Default source: yarn-default.xml

yarn.resourcemanager.zk-state-store.parent-path

Full path of the ZooKeeper znode where RM state will be stored. This must be supplied when using org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore as the value for yarn.resourcemanager.store.class

Default value: /rmstore
Default source: yarn-default.xml

yarn.resourcemanager.zk-timeout-ms

ZooKeeper session timeout in milliseconds. Session expiration is managed by the ZooKeeper cluster itself, not by the client. This value is used by the cluster to determine when the client's session expires. Expirations happens when the cluster does not hear from the client within the specified session timeout period (i.e. no heartbeat).

Default value: 10000
Default source: yarn-default.xml

yarn.scheduler.maximum-allocation-mb

The maximum allocation for every container request at the RM, in MBs. Memory requests higher than this won't take effect, and will get capped to this value.

Default value: 8192
Default source: yarn-default.xml

yarn.scheduler.maximum-allocation-vcores

The maximum allocation for every container request at the RM, in terms of virtual CPU cores. Requests higher than this won't take effect, and will get capped to this value.

Default value: 32
Default source: yarn-default.xml

yarn.scheduler.minimum-allocation-mb

The minimum allocation for every container request at the RM, in MBs. Memory requests lower than this won't take effect, and the specified value will get allocated at minimum.

Default value: 1024
Default source: yarn-default.xml

yarn.scheduler.minimum-allocation-vcores

The minimum allocation for every container request at the RM, in terms of virtual CPU cores. Requests lower than this won't take effect, and the specified value will get allocated the minimum.

Default value: 1
Default source: yarn-default.xml

yarn.resourcemanager.zk-timeout-msDefault value: 10000
Default source: yarn-default.xml
yarn.scheduler.maximum-allocation-mbDefault value: 8192
Default source: yarn-default.xml
yarn.scheduler.maximum-allocation-vcoresDefault value: 32
Default source: yarn-default.xml
yarn.scheduler.minimum-allocation-mbDefault value: 1024
Default source: yarn-default.xml
yarn.scheduler.minimum-allocation-vcoresDefault value: 1
Default source: yarn-default.xml
yarn.sharedcache.admin.addressDefault value: 0.0.0.0:8047
Default source: yarn-default.xml
yarn.sharedcache.admin.thread-countDefault value: 1
Default source: yarn-default.xml
yarn.sharedcache.app-checker.classDefault value: org.apache.hadoop.yarn.server.sharedcachemanager.RemoteAppChecker
Default source: yarn-default.xml
yarn.sharedcache.checksum.algo.implDefault value: org.apache.hadoop.yarn.sharedcache.ChecksumSHA256Impl
Default source: yarn-default.xml
yarn.sharedcache.cleaner.initial-delay-minsDefault value: 10
Default source: yarn-default.xml
yarn.sharedcache.cleaner.period-minsDefault value: 1440
Default source: yarn-default.xml
yarn.sharedcache.cleaner.resource-sleep-msDefault value: 0
Default source: yarn-default.xml
yarn.sharedcache.client-server.addressDefault value: 0.0.0.0:8045
Default source: yarn-default.xml
yarn.sharedcache.client-server.thread-countDefault value: 50
Default source: yarn-default.xml
yarn.sharedcache.enabledDefault value: FALSE
Default source: yarn-default.xml
yarn.sharedcache.nested-levelDefault value: 3
Default source: yarn-default.xml
yarn.sharedcache.nm.uploader.replication.factorDefault value: 10
Default source: yarn-default.xml
yarn.sharedcache.nm.uploader.thread-countDefault value: 20
Default source: yarn-default.xml
yarn.sharedcache.root-dirDefault value: /sharedcache
Default source: yarn-default.xml
yarn.sharedcache.store.classDefault value: org.apache.hadoop.yarn.server.sharedcachemanager.store.InMemorySCMStore
Default source: yarn-default.xml
yarn.sharedcache.store.in-memory.check-period-minsDefault value: 720
Default source: yarn-default.xml
yarn.sharedcache.store.in-memory.initial-delay-minsDefault value: 10
Default source: yarn-default.xml
yarn.sharedcache.store.in-memory.staleness-period-minsDefault value: 10080
Default source: yarn-default.xml
yarn.sharedcache.uploader.server.addressDefault value: 0.0.0.0:8046
Default source: yarn-default.xml
yarn.sharedcache.uploader.server.thread-countDefault value: 50
Default source: yarn-default.xml
yarn.sharedcache.webapp.addressDefault value: 0.0.0.0:8788
Default source: yarn-default.xml
yarn.timeline-service.addressDefault value: ${yarn.timeline-service.hostname}:10200
Default source: yarn-default.xml
yarn.timeline-service.client.best-effortDefault value: FALSE
Default source: yarn-default.xml
yarn.timeline-service.client.max-retriesDefault value: 30
Default source: yarn-default.xml
yarn.timeline-service.client.retry-interval-msDefault value: 1000
Default source: yarn-default.xml
yarn.timeline-service.enabledDefault value: FALSE
Default source: yarn-default.xml
yarn.timeline-service.generic-application-history.aux-servicesDefault value: HSVolumeManager
Default source: code
yarn.timeline-service.handler-thread-countDefault value: 10
Default source: yarn-default.xml
yarn.timeline-service.hostnameDefault value: 0.0.0.0
Default source: yarn-default.xml
yarn.timeline-service.http-authentication.simple.anonymous.allowedDefault value: TRUE
Default source: yarn-default.xml
yarn.timeline-service.http-authentication.typeDefault value: simple
Default source: yarn-default.xml
yarn.timeline-service.keytabDefault value: /etc/krb5.keytab
Default source: yarn-default.xml
yarn.timeline-service.leveldb-state-store.pathDefault value: ${hadoop.tmp.dir}/yarn/timeline
Default source: yarn-default.xml
yarn.timeline-service.leveldb-timeline-store.pathDefault value: ${hadoop.tmp.dir}/yarn/timeline
Default source: yarn-default.xml
yarn.timeline-service.leveldb-timeline-store.read-cache-sizeDefault value: 104857600
Default source: yarn-default.xml
yarn.timeline-service.leveldb-timeline-store.start-time-read-cache-sizeDefault value: 10000
Default source: yarn-default.xml
yarn.timeline-service.leveldb-timeline-store.start-time-write-cache-sizeDefault value: 10000
Default source: yarn-default.xml
yarn.timeline-service.leveldb-timeline-store.ttl-interval-msDefault value: 300000
Default source: yarn-default.xml
yarn.timeline-service.recovery.enabledDefault value: FALSE
Default source: yarn-default.xml
yarn.timeline-service.state-store-classDefault value: org.apache.hadoop.yarn.server.timeline.recovery.LeveldbTimelineStateStore
Default source: yarn-default.xml
yarn.timeline-service.store-classDefault value: org.apache.hadoop.yarn.server.timeline.LeveldbTimelineStore
Default source: yarn-default.xml
yarn.timeline-service.ttl-enableDefault value: TRUE
Default source: yarn-default.xml
yarn.timeline-service.ttl-msDefault value: 604800000
Default source: yarn-default.xml
yarn.timeline-service.webapp.addressDefault value: ${yarn.timeline-service.hostname}:8188
Default source: yarn-default.xml
yarn.timeline-service.webapp.https.addressDefault value: ${yarn.timeline-service.hostname}:8190
Default source: yarn-default.xml
yarn.use-central-logging-for-mapreduce-onlyDefault value: FALSE
Default source: code
yarn.timeline-service.ttl-enableDefault value: TRUE
Default source: yarn-default.xml
yarn.timeline-service.ttl-msDefault value: 604800000
Default source: yarn-default.xml 
yarn.timeline-service.webapp.addressDefault value: ${yarn.timeline-service.hostname}:8188
Default source: yarn-default.xml
yarn.timeline-service.webapp.https.addressDefault value: ${yarn.timeline-service.hostname}:8190
Default source: yarn-default.xml
yarn.use-central-logging-for-mapreduce-onlyDefault value: FALSE
Default source: code
yarn.timeline-service.webapp.https.addressDefault value: ${yarn.timeline-service.hostname}:8190
Default source: yarn-default.xml
yarn.use-central-logging-for-mapreduce-onlyDefault value: FALSE
Default source: code
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