Spark (Standalone) Properties in CDH 5.8.0

Role groups:

gateway

Advanced

Display Name Description Related Name Default Value API Name Required
Deploy Directory The directory where the client configs will be deployed /etc/spark client_config_root_dir true
Gateway Logging Advanced Configuration Snippet (Safety Valve) For advanced use only, a string to be inserted into log4j.properties for this role only. log4j_safety_valve false
Spark (Standalone) Client Advanced Configuration Snippet (Safety Valve) for spark-conf/spark-defaults.conf For advanced use only, a string to be inserted into the client configuration for spark-conf/spark-defaults.conf. spark-conf/spark-defaults.conf_client_config_safety_valve false
Spark (Standalone) Client Advanced Configuration Snippet (Safety Valve) for spark-conf/spark-env.sh For advanced use only, a string to be inserted into the client configuration for spark-conf/spark-env.sh. spark-conf/spark-env.sh_client_config_safety_valve false

Logs

Display Name Description Related Name Default Value API Name Required
Gateway Logging Threshold The minimum log level for Gateway logs INFO log_threshold false

Monitoring

Display Name Description Related Name Default Value API Name Required
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false

Other

Display Name Description Related Name Default Value API Name Required
Alternatives Priority The priority level that the client configuration will have in the Alternatives system on the hosts. Higher priority levels will cause Alternatives to prefer this configuration over any others. 50 client_config_priority true
Enable Kill From UI Whether to allow users to kill running stages from the Spark Web UI. spark.ui.killEnabled true spark_gateway_ui_kill_enabled true
Enable History Write Spark application history logs to HDFS. spark.eventLog.enabled true spark_history_enabled false
Extra Python Path Python library paths to add to PySpark applications. spark_python_path spark_python_path false

Suppressions

Display Name Description Related Name Default Value API Name Required
Suppress Configuration Validator: CDH Version Validator Whether to suppress configuration warnings produced by the CDH Version Validator configuration validator. false role_config_suppression_cdh_version_validator true
Suppress Parameter Validation: Deploy Directory Whether to suppress configuration warnings produced by the built-in parameter validation for the Deploy Directory parameter. false role_config_suppression_client_config_root_dir true
Suppress Parameter Validation: Gateway Logging Advanced Configuration Snippet (Safety Valve) Whether to suppress configuration warnings produced by the built-in parameter validation for the Gateway Logging Advanced Configuration Snippet (Safety Valve) parameter. false role_config_suppression_log4j_safety_valve true
Suppress Parameter Validation: Spark (Standalone) Client Advanced Configuration Snippet (Safety Valve) for spark-conf/spark-defaults.conf Whether to suppress configuration warnings produced by the built-in parameter validation for the Spark (Standalone) Client Advanced Configuration Snippet (Safety Valve) for spark-conf/spark-defaults.conf parameter. false role_config_suppression_spark-conf/spark-defaults.conf_client_config_safety_valve true
Suppress Parameter Validation: Spark (Standalone) Client Advanced Configuration Snippet (Safety Valve) for spark-conf/spark-env.sh Whether to suppress configuration warnings produced by the built-in parameter validation for the Spark (Standalone) Client Advanced Configuration Snippet (Safety Valve) for spark-conf/spark-env.sh parameter. false role_config_suppression_spark-conf/spark-env.sh_client_config_safety_valve true
Suppress Parameter Validation: Extra Python Path Whether to suppress configuration warnings produced by the built-in parameter validation for the Extra Python Path parameter. false role_config_suppression_spark_python_path true

historyserver

Advanced

Display Name Description Related Name Default Value API Name Required
History Server Logging Advanced Configuration Snippet (Safety Valve) For advanced use only, a string to be inserted into log4j.properties for this role only. log4j_safety_valve false
Heap Dump Directory Path to directory where heap dumps are generated when java.lang.OutOfMemoryError error is thrown. This directory is automatically created if it does not exist. If this directory already exists, role user must have write access to this directory. If this directory is shared among multiple roles, it should have 1777 permissions. The heap dump files are created with 600 permissions and are owned by the role user. The amount of free space in this directory should be greater than the maximum Java Process heap size configured for this role. oom_heap_dump_dir /tmp oom_heap_dump_dir false
Dump Heap When Out of Memory When set, generates heap dump file when java.lang.OutOfMemoryError is thrown. true oom_heap_dump_enabled true
Kill When Out of Memory When set, a SIGKILL signal is sent to the role process when java.lang.OutOfMemoryError is thrown. true oom_sigkill_enabled true
Automatically Restart Process When set, this role's process is automatically (and transparently) restarted in the event of an unexpected failure. false process_auto_restart true
Enable Metric Collection Cloudera Manager agent monitors each service and each of its role by publishing metrics to the Cloudera Manager Service Monitor. Setting it to false will stop Cloudera Manager agent from publishing any metric for corresponding service/roles. This is usually helpful for services that generate large amount of metrics which Service Monitor is not able to process. true process_should_monitor true
History Server Advanced Configuration Snippet (Safety Valve) for spark-conf/spark-env.sh For advanced use only. A string to be inserted into spark-conf/spark-env.sh for this role only. spark-conf/spark-env.sh_role_safety_valve false
History Server Environment Advanced Configuration Snippet (Safety Valve) For advanced use only, key-value pairs (one on each line) to be inserted into a role's environment. Applies to configurations of this role except client configuration. SPARK_HISTORY_SERVER_role_env_safety_valve false

Logs

Display Name Description Related Name Default Value API Name Required
History Server Log Directory The log directory for log files of the role History Server. log_dir /var/log/spark log_dir false
History Server Logging Threshold The minimum log level for History Server logs INFO log_threshold false
History Server Maximum Log File Backups The maximum number of rolled log files to keep for History Server logs. Typically used by log4j or logback. 10 max_log_backup_index false
History Server Max Log Size The maximum size, in megabytes, per log file for History Server logs. Typically used by log4j or logback. 200 MiB max_log_size false

Monitoring

Display Name Description Related Name Default Value API Name Required
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false

Other

Display Name Description Related Name Default Value API Name Required
Java Heap Size of History Server in Bytes Maximum size for the Java process heap memory. Passed to Java -Xmx. Measured in bytes. history_server_max_heapsize 512 MiB history_server_max_heapsize true

Performance

Display Name Description Related Name Default Value API Name Required
Maximum Process File Descriptors If configured, overrides the process soft and hard rlimits (also called ulimits) for file descriptors to the configured value. rlimit_fds false

Ports and Addresses

Display Name Description Related Name Default Value API Name Required
History Server WebUI Port The port of the history server WebUI history.port 18088 history_server_web_port true

Resource Management

Display Name Description Related Name Default Value API Name Required
Cgroup CPU Shares Number of CPU shares to assign to this role. The greater the number of shares, the larger the share of the host's CPUs that will be given to this role when the host experiences CPU contention. Must be between 2 and 262144. Defaults to 1024 for processes not managed by Cloudera Manager. cpu.shares 1024 rm_cpu_shares true
Cgroup I/O Weight Weight for the read I/O requests issued by this role. The greater the weight, the higher the priority of the requests when the host experiences I/O contention. Must be between 100 and 1000. Defaults to 1000 for processes not managed by Cloudera Manager. blkio.weight 500 rm_io_weight true
Cgroup Memory Hard Limit Hard memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.limit_in_bytes -1 MiB rm_memory_hard_limit true
Cgroup Memory Soft Limit Soft memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process if and only if the host is facing memory pressure. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.soft_limit_in_bytes -1 MiB rm_memory_soft_limit true

Stacks Collection

Display Name Description Related Name Default Value API Name Required
Stacks Collection Data Retention The amount of stacks data that is retained. After the retention limit is reached, the oldest data is deleted. stacks_collection_data_retention 100 MiB stacks_collection_data_retention false
Stacks Collection Directory The directory in which stacks logs are placed. If not set, stacks are logged into a stacks subdirectory of the role's log directory. stacks_collection_directory stacks_collection_directory false
Stacks Collection Enabled Whether or not periodic stacks collection is enabled. stacks_collection_enabled false stacks_collection_enabled true
Stacks Collection Frequency The frequency with which stacks are collected. stacks_collection_frequency 5.0 second(s) stacks_collection_frequency false
Stacks Collection Method The method used to collect stacks. The jstack option involves periodically running the jstack command against the role's daemon process. The servlet method is available for those roles that have an HTTP server endpoint exposing the current stacks traces of all threads. When the servlet method is selected, that HTTP endpoint is periodically scraped. stacks_collection_method jstack stacks_collection_method false

Suppressions

Display Name Description Related Name Default Value API Name Required
Suppress Configuration Validator: CDH Version Validator Whether to suppress configuration warnings produced by the CDH Version Validator configuration validator. false role_config_suppression_cdh_version_validator true
Suppress Parameter Validation: History Server Logging Advanced Configuration Snippet (Safety Valve) Whether to suppress configuration warnings produced by the built-in parameter validation for the History Server Logging Advanced Configuration Snippet (Safety Valve) parameter. false role_config_suppression_log4j_safety_valve true
Suppress Parameter Validation: History Server Log Directory Whether to suppress configuration warnings produced by the built-in parameter validation for the History Server Log Directory parameter. false role_config_suppression_log_dir true
Suppress Parameter Validation: Heap Dump Directory Whether to suppress configuration warnings produced by the built-in parameter validation for the Heap Dump Directory parameter. false role_config_suppression_oom_heap_dump_dir true
Suppress Parameter Validation: History Server Advanced Configuration Snippet (Safety Valve) for spark-conf/spark-env.sh Whether to suppress configuration warnings produced by the built-in parameter validation for the History Server Advanced Configuration Snippet (Safety Valve) for spark-conf/spark-env.sh parameter. false role_config_suppression_spark-conf/spark-env.sh_role_safety_valve true
Suppress Parameter Validation: History Server Environment Advanced Configuration Snippet (Safety Valve) Whether to suppress configuration warnings produced by the built-in parameter validation for the History Server Environment Advanced Configuration Snippet (Safety Valve) parameter. false role_config_suppression_spark_history_server_role_env_safety_valve true
Suppress Parameter Validation: Stacks Collection Directory Whether to suppress configuration warnings produced by the built-in parameter validation for the Stacks Collection Directory parameter. false role_config_suppression_stacks_collection_directory true

master

Advanced

Display Name Description Related Name Default Value API Name Required
Master Logging Advanced Configuration Snippet (Safety Valve) For advanced use only, a string to be inserted into log4j.properties for this role only. log4j_safety_valve false
Heap Dump Directory Path to directory where heap dumps are generated when java.lang.OutOfMemoryError error is thrown. This directory is automatically created if it does not exist. If this directory already exists, role user must have write access to this directory. If this directory is shared among multiple roles, it should have 1777 permissions. The heap dump files are created with 600 permissions and are owned by the role user. The amount of free space in this directory should be greater than the maximum Java Process heap size configured for this role. oom_heap_dump_dir /tmp oom_heap_dump_dir false
Dump Heap When Out of Memory When set, generates heap dump file when java.lang.OutOfMemoryError is thrown. true oom_heap_dump_enabled true
Kill When Out of Memory When set, a SIGKILL signal is sent to the role process when java.lang.OutOfMemoryError is thrown. true oom_sigkill_enabled true
Automatically Restart Process When set, this role's process is automatically (and transparently) restarted in the event of an unexpected failure. false process_auto_restart true
Enable Metric Collection Cloudera Manager agent monitors each service and each of its role by publishing metrics to the Cloudera Manager Service Monitor. Setting it to false will stop Cloudera Manager agent from publishing any metric for corresponding service/roles. This is usually helpful for services that generate large amount of metrics which Service Monitor is not able to process. true process_should_monitor true
Master Advanced Configuration Snippet (Safety Valve) for spark-conf/spark-env.sh For advanced use only. A string to be inserted into spark-conf/spark-env.sh for this role only. spark-conf/spark-env.sh_role_safety_valve false
Master Environment Advanced Configuration Snippet (Safety Valve) For advanced use only, key-value pairs (one on each line) to be inserted into a role's environment. Applies to configurations of this role except client configuration. SPARK_MASTER_role_env_safety_valve false

Logs

Display Name Description Related Name Default Value API Name Required
Master Log Directory The log directory for log files of the role Master. log.dir /var/log/spark log_dir false
Master Logging Threshold The minimum log level for Master logs INFO log_threshold false
Master Maximum Log File Backups The maximum number of rolled log files to keep for Master logs. Typically used by log4j or logback. 10 max_log_backup_index false
Master Max Log Size The maximum size, in megabytes, per log file for Master logs. Typically used by log4j or logback. 200 MiB max_log_size false

Monitoring

Display Name Description Related Name Default Value API Name Required
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false

Other

Display Name Description Related Name Default Value API Name Required
Additional Master args Additional arguments for the master additional.args master_additional_args false
Master Address Overrides the address where the Master will listen for connections. Note: Spark will not work if the wildcard (0.0.0.0) address is used here. server.address master_address false
Java Heap Size of Master in Bytes Maximum size for the Java process heap memory. Passed to Java -Xmx. Measured in bytes. master_max_heapsize 512 MiB master_max_heapsize true

Performance

Display Name Description Related Name Default Value API Name Required
Maximum Process File Descriptors If configured, overrides the process soft and hard rlimits (also called ulimits) for file descriptors to the configured value. rlimit_fds false

Ports and Addresses

Display Name Description Related Name Default Value API Name Required
Master Port The port of the master server.port 7077 master_port true
Master WebUI Port The port of the master WebUI webui.port 18080 master_webui_port true

Resource Management

Display Name Description Related Name Default Value API Name Required
Cgroup CPU Shares Number of CPU shares to assign to this role. The greater the number of shares, the larger the share of the host's CPUs that will be given to this role when the host experiences CPU contention. Must be between 2 and 262144. Defaults to 1024 for processes not managed by Cloudera Manager. cpu.shares 1024 rm_cpu_shares true
Cgroup I/O Weight Weight for the read I/O requests issued by this role. The greater the weight, the higher the priority of the requests when the host experiences I/O contention. Must be between 100 and 1000. Defaults to 1000 for processes not managed by Cloudera Manager. blkio.weight 500 rm_io_weight true
Cgroup Memory Hard Limit Hard memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.limit_in_bytes -1 MiB rm_memory_hard_limit true
Cgroup Memory Soft Limit Soft memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process if and only if the host is facing memory pressure. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.soft_limit_in_bytes -1 MiB rm_memory_soft_limit true

Stacks Collection

Display Name Description Related Name Default Value API Name Required
Stacks Collection Data Retention The amount of stacks data that is retained. After the retention limit is reached, the oldest data is deleted. stacks_collection_data_retention 100 MiB stacks_collection_data_retention false
Stacks Collection Directory The directory in which stacks logs are placed. If not set, stacks are logged into a stacks subdirectory of the role's log directory. stacks_collection_directory stacks_collection_directory false
Stacks Collection Enabled Whether or not periodic stacks collection is enabled. stacks_collection_enabled false stacks_collection_enabled true
Stacks Collection Frequency The frequency with which stacks are collected. stacks_collection_frequency 5.0 second(s) stacks_collection_frequency false
Stacks Collection Method The method used to collect stacks. The jstack option involves periodically running the jstack command against the role's daemon process. The servlet method is available for those roles that have an HTTP server endpoint exposing the current stacks traces of all threads. When the servlet method is selected, that HTTP endpoint is periodically scraped. stacks_collection_method jstack stacks_collection_method false

Suppressions

Display Name Description Related Name Default Value API Name Required
Suppress Configuration Validator: CDH Version Validator Whether to suppress configuration warnings produced by the CDH Version Validator configuration validator. false role_config_suppression_cdh_version_validator true
Suppress Parameter Validation: Master Logging Advanced Configuration Snippet (Safety Valve) Whether to suppress configuration warnings produced by the built-in parameter validation for the Master Logging Advanced Configuration Snippet (Safety Valve) parameter. false role_config_suppression_log4j_safety_valve true
Suppress Parameter Validation: Master Log Directory Whether to suppress configuration warnings produced by the built-in parameter validation for the Master Log Directory parameter. false role_config_suppression_log_dir true
Suppress Parameter Validation: Additional Master args Whether to suppress configuration warnings produced by the built-in parameter validation for the Additional Master args parameter. false role_config_suppression_master_additional_args true
Suppress Parameter Validation: Master Address Whether to suppress configuration warnings produced by the built-in parameter validation for the Master Address parameter. false role_config_suppression_master_address true
Suppress Parameter Validation: Heap Dump Directory Whether to suppress configuration warnings produced by the built-in parameter validation for the Heap Dump Directory parameter. false role_config_suppression_oom_heap_dump_dir true
Suppress Parameter Validation: Master Advanced Configuration Snippet (Safety Valve) for spark-conf/spark-env.sh Whether to suppress configuration warnings produced by the built-in parameter validation for the Master Advanced Configuration Snippet (Safety Valve) for spark-conf/spark-env.sh parameter. false role_config_suppression_spark-conf/spark-env.sh_role_safety_valve true
Suppress Parameter Validation: Master Environment Advanced Configuration Snippet (Safety Valve) Whether to suppress configuration warnings produced by the built-in parameter validation for the Master Environment Advanced Configuration Snippet (Safety Valve) parameter. false role_config_suppression_spark_master_role_env_safety_valve true
Suppress Parameter Validation: Stacks Collection Directory Whether to suppress configuration warnings produced by the built-in parameter validation for the Stacks Collection Directory parameter. false role_config_suppression_stacks_collection_directory true

service_wide

Advanced

Display Name Description Related Name Default Value API Name Required
System Group The group that this service's processes should run as. spark process_groupname true
System User The user that this service's processes should run as. spark process_username true
Spark (Standalone) Service Advanced Configuration Snippet (Safety Valve) for spark-conf/spark-env.sh For advanced use only, a string to be inserted into spark-conf/spark-env.sh. Applies to configurations of all roles in this service except client configuration. spark-conf/spark-env.sh_service_safety_valve false
Spark (Standalone) Service Environment Advanced Configuration Snippet (Safety Valve) For advanced use only, key-value pairs (one on each line) to be inserted into a role's environment. Applies to configurations of all roles in this service except client configuration. SPARK_service_env_safety_valve false

Monitoring

Display Name Description Related Name Default Value API Name Required
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false

Other

Display Name Description Related Name Default Value API Name Required
HDFS Service Name of the HDFS service that this Spark (Standalone) service instance depends on hdfs_service false
Identity String The identity string of the Spark instance identity.string identity_string false
Spark History Location (HDFS) The location of Spark application history logs in HDFS. Changing this value will not move existing logs to the new location. spark.eventLog.dir /user/spark/applicationHistory spark_history_log_dir false
Spark Jar Location (HDFS) The location of the Spark jar in HDFS. This configuration is for backwards compatibility and is not used by the Spark Standalone service. spark_jar_hdfs_path spark_jar_hdfs_path false

Suppressions

Display Name Description Related Name Default Value API Name Required
Suppress Configuration Validator: Gateway Count Validator Whether to suppress configuration warnings produced by the Gateway Count Validator configuration validator. false service_config_suppression_gateway_count_validator true
Suppress Parameter Validation: Identity String Whether to suppress configuration warnings produced by the built-in parameter validation for the Identity String parameter. false service_config_suppression_identity_string true
Suppress Parameter Validation: System Group Whether to suppress configuration warnings produced by the built-in parameter validation for the System Group parameter. false service_config_suppression_process_groupname true
Suppress Parameter Validation: System User Whether to suppress configuration warnings produced by the built-in parameter validation for the System User parameter. false service_config_suppression_process_username true
Suppress Parameter Validation: Spark (Standalone) Service Advanced Configuration Snippet (Safety Valve) for spark-conf/spark-env.sh Whether to suppress configuration warnings produced by the built-in parameter validation for the Spark (Standalone) Service Advanced Configuration Snippet (Safety Valve) for spark-conf/spark-env.sh parameter. false service_config_suppression_spark-conf/spark-env.sh_service_safety_valve true
Suppress Parameter Validation: Spark History Location (HDFS) Whether to suppress configuration warnings produced by the built-in parameter validation for the Spark History Location (HDFS) parameter. false service_config_suppression_spark_history_log_dir true
Suppress Configuration Validator: History Server Count Validator Whether to suppress configuration warnings produced by the History Server Count Validator configuration validator. false service_config_suppression_spark_history_server_count_validator true
Suppress Parameter Validation: Spark Jar Location (HDFS) Whether to suppress configuration warnings produced by the built-in parameter validation for the Spark Jar Location (HDFS) parameter. false service_config_suppression_spark_jar_hdfs_path true
Suppress Configuration Validator: Master Count Validator Whether to suppress configuration warnings produced by the Master Count Validator configuration validator. false service_config_suppression_spark_master_count_validator true
Suppress Parameter Validation: Spark (Standalone) Service Environment Advanced Configuration Snippet (Safety Valve) Whether to suppress configuration warnings produced by the built-in parameter validation for the Spark (Standalone) Service Environment Advanced Configuration Snippet (Safety Valve) parameter. false service_config_suppression_spark_service_env_safety_valve true
Suppress Configuration Validator: Worker Count Validator Whether to suppress configuration warnings produced by the Worker Count Validator configuration validator. false service_config_suppression_spark_worker_count_validator true

worker

Advanced

Display Name Description Related Name Default Value API Name Required
Worker Logging Advanced Configuration Snippet (Safety Valve) For advanced use only, a string to be inserted into log4j.properties for this role only. log4j_safety_valve false
Heap Dump Directory Path to directory where heap dumps are generated when java.lang.OutOfMemoryError error is thrown. This directory is automatically created if it does not exist. If this directory already exists, role user must have write access to this directory. If this directory is shared among multiple roles, it should have 1777 permissions. The heap dump files are created with 600 permissions and are owned by the role user. The amount of free space in this directory should be greater than the maximum Java Process heap size configured for this role. oom_heap_dump_dir /tmp oom_heap_dump_dir false
Dump Heap When Out of Memory When set, generates heap dump file when java.lang.OutOfMemoryError is thrown. true oom_heap_dump_enabled true
Kill When Out of Memory When set, a SIGKILL signal is sent to the role process when java.lang.OutOfMemoryError is thrown. true oom_sigkill_enabled true
Automatically Restart Process When set, this role's process is automatically (and transparently) restarted in the event of an unexpected failure. false process_auto_restart true
Enable Metric Collection Cloudera Manager agent monitors each service and each of its role by publishing metrics to the Cloudera Manager Service Monitor. Setting it to false will stop Cloudera Manager agent from publishing any metric for corresponding service/roles. This is usually helpful for services that generate large amount of metrics which Service Monitor is not able to process. true process_should_monitor true
Worker Advanced Configuration Snippet (Safety Valve) for spark-conf/spark-env.sh For advanced use only. A string to be inserted into spark-conf/spark-env.sh for this role only. spark-conf/spark-env.sh_role_safety_valve false
Worker Environment Advanced Configuration Snippet (Safety Valve) For advanced use only, key-value pairs (one on each line) to be inserted into a role's environment. Applies to configurations of this role except client configuration. SPARK_WORKER_role_env_safety_valve false

Logs

Display Name Description Related Name Default Value API Name Required
Worker Log Directory The log directory for log files of the role Worker. log.dir /var/log/spark log_dir false
Worker Logging Threshold The minimum log level for Worker logs INFO log_threshold false
Worker Maximum Log File Backups The maximum number of rolled log files to keep for Worker logs. Typically used by log4j or logback. 10 max_log_backup_index false
Worker Max Log Size The maximum size, in megabytes, per log file for Worker logs. Typically used by log4j or logback. 200 MiB max_log_size false

Monitoring

Display Name Description Related Name Default Value API Name Required
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false

Other

Display Name Description Related Name Default Value API Name Required
Total Java Heap Sizes of Worker's Executors in Bytes Memory available to the Worker's Executors. This is the maximum sum total of all the Executors' Java heap sizes on this Worker node. Passed to Java -Xmx. Measured in bytes. executor_total_max_heapsize 8 GiB executor_total_max_heapsize true
Work directory The work directory for temporary files work.dir /var/run/spark/work work_directory true
Additional Worker args Additional arguments for the workers additional.args worker_additional_args false
Java Heap Size of Worker in Bytes Maximum size for the Java process heap memory. Passed to Java -Xmx. Measured in bytes. worker_max_heapsize 512 MiB worker_max_heapsize true

Performance

Display Name Description Related Name Default Value API Name Required
Maximum Process File Descriptors If configured, overrides the process soft and hard rlimits (also called ulimits) for file descriptors to the configured value. rlimit_fds false

Ports and Addresses

Display Name Description Related Name Default Value API Name Required
Worker Port The port of the worker server.port 7078 worker_port true
Worker WebUI Port The port of the worker WebUI webui.port 18081 worker_webui_port true

Resource Management

Display Name Description Related Name Default Value API Name Required
Cgroup CPU Shares Number of CPU shares to assign to this role. The greater the number of shares, the larger the share of the host's CPUs that will be given to this role when the host experiences CPU contention. Must be between 2 and 262144. Defaults to 1024 for processes not managed by Cloudera Manager. cpu.shares 1024 rm_cpu_shares true
Cgroup I/O Weight Weight for the read I/O requests issued by this role. The greater the weight, the higher the priority of the requests when the host experiences I/O contention. Must be between 100 and 1000. Defaults to 1000 for processes not managed by Cloudera Manager. blkio.weight 500 rm_io_weight true
Cgroup Memory Hard Limit Hard memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.limit_in_bytes -1 MiB rm_memory_hard_limit true
Cgroup Memory Soft Limit Soft memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process if and only if the host is facing memory pressure. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.soft_limit_in_bytes -1 MiB rm_memory_soft_limit true

Stacks Collection

Display Name Description Related Name Default Value API Name Required
Stacks Collection Data Retention The amount of stacks data that is retained. After the retention limit is reached, the oldest data is deleted. stacks_collection_data_retention 100 MiB stacks_collection_data_retention false
Stacks Collection Directory The directory in which stacks logs are placed. If not set, stacks are logged into a stacks subdirectory of the role's log directory. stacks_collection_directory stacks_collection_directory false
Stacks Collection Enabled Whether or not periodic stacks collection is enabled. stacks_collection_enabled false stacks_collection_enabled true
Stacks Collection Frequency The frequency with which stacks are collected. stacks_collection_frequency 5.0 second(s) stacks_collection_frequency false
Stacks Collection Method The method used to collect stacks. The jstack option involves periodically running the jstack command against the role's daemon process. The servlet method is available for those roles that have an HTTP server endpoint exposing the current stacks traces of all threads. When the servlet method is selected, that HTTP endpoint is periodically scraped. stacks_collection_method jstack stacks_collection_method false

Suppressions

Display Name Description Related Name Default Value API Name Required
Suppress Configuration Validator: CDH Version Validator Whether to suppress configuration warnings produced by the CDH Version Validator configuration validator. false role_config_suppression_cdh_version_validator true
Suppress Parameter Validation: Worker Logging Advanced Configuration Snippet (Safety Valve) Whether to suppress configuration warnings produced by the built-in parameter validation for the Worker Logging Advanced Configuration Snippet (Safety Valve) parameter. false role_config_suppression_log4j_safety_valve true
Suppress Parameter Validation: Worker Log Directory Whether to suppress configuration warnings produced by the built-in parameter validation for the Worker Log Directory parameter. false role_config_suppression_log_dir true
Suppress Parameter Validation: Heap Dump Directory Whether to suppress configuration warnings produced by the built-in parameter validation for the Heap Dump Directory parameter. false role_config_suppression_oom_heap_dump_dir true
Suppress Parameter Validation: Worker Advanced Configuration Snippet (Safety Valve) for spark-conf/spark-env.sh Whether to suppress configuration warnings produced by the built-in parameter validation for the Worker Advanced Configuration Snippet (Safety Valve) for spark-conf/spark-env.sh parameter. false role_config_suppression_spark-conf/spark-env.sh_role_safety_valve true
Suppress Parameter Validation: Worker Environment Advanced Configuration Snippet (Safety Valve) Whether to suppress configuration warnings produced by the built-in parameter validation for the Worker Environment Advanced Configuration Snippet (Safety Valve) parameter. false role_config_suppression_spark_worker_role_env_safety_valve true
Suppress Parameter Validation: Stacks Collection Directory Whether to suppress configuration warnings produced by the built-in parameter validation for the Stacks Collection Directory parameter. false role_config_suppression_stacks_collection_directory true
Suppress Parameter Validation: Work directory Whether to suppress configuration warnings produced by the built-in parameter validation for the Work directory parameter. false role_config_suppression_work_directory true
Suppress Parameter Validation: Additional Worker args Whether to suppress configuration warnings produced by the built-in parameter validation for the Additional Worker args parameter. false role_config_suppression_worker_additional_args true