org.apache.cassandra.config

Class Config

java.lang.Object

org.apache.cassandra.config.Config

public class Config
extends java.lang.Object

A class that contains configuration properties for the cassandra node it runs within. Properties declared as volatile can be mutated via JMX.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Config.CommitFailurePolicy
static class	Config.CommitLogSync
static class	Config.DiskAccessMode
static class	Config.DiskFailurePolicy
static class	Config.DiskOptimizationStrategy
static class	Config.InternodeCompression
static class	Config.MemtableAllocationType
static class	Config.RequestSchedulerId
static class	Config.UserFunctionTimeoutPolicy

Field Summary

Fields

Modifier and Type	Field and Description
java.lang.String	allocate_tokens_for_keyspace Triggers automatic allocation of tokens if set, using the replication strategy of the referenced keyspace
java.lang.String	authenticator
java.lang.String	authorizer
boolean	auto_bootstrap
boolean	auto_snapshot
boolean	back_pressure_enabled
ParameterizedClass	back_pressure_strategy
int	batch_size_fail_threshold_in_kb
int	batch_size_warn_threshold_in_kb
int	batchlog_replay_throttle_in_kb
java.lang.String	broadcast_address
java.lang.String	broadcast_rpc_address
boolean	buffer_pool_use_heap_if_exhausted
long	cas_contention_timeout_in_ms
boolean	cdc_enabled
int	cdc_free_space_check_interval_ms
java.lang.String	cdc_raw_directory
int	cdc_total_space_in_mb
boolean	check_for_duplicate_rows_during_compaction
boolean	check_for_duplicate_rows_during_reads If these are enabled duplicate keys will get logged, and if snapshot_on_duplicate_row_detection is enabled, the table will get snapshotted for offline investigation
EncryptionOptions.ClientEncryptionOptions	client_encryption_options
java.lang.String	cluster_name
int	column_index_cache_size_in_kb
int	column_index_size_in_kb
Config.CommitFailurePolicy	commit_failure_policy
ParameterizedClass	commitlog_compression
java.lang.String	commitlog_directory
int	commitlog_max_compression_buffers_in_pool
int	commitlog_periodic_queue_size Deprecated.
int	commitlog_segment_size_in_mb
Config.CommitLogSync	commitlog_sync
double	commitlog_sync_batch_window_in_ms
int	commitlog_sync_period_in_ms
java.lang.Integer	commitlog_total_space_in_mb
int	compaction_large_partition_warning_threshold_mb
int	compaction_throughput_mb_per_sec
java.lang.Integer	concurrent_compactors
int	concurrent_counter_writes
int	concurrent_materialized_view_writes
int	concurrent_reads
java.lang.Integer	concurrent_replicates Deprecated.
int	concurrent_writes
int	counter_cache_keys_to_save
int	counter_cache_save_period
java.lang.Long	counter_cache_size_in_mb
long	counter_write_request_timeout_in_ms
int	credentials_cache_max_entries
int	credentials_update_interval_in_ms
int	credentials_validity_in_ms
boolean	cross_node_timeout
java.lang.String[]	data_file_directories
Config.DiskAccessMode	disk_access_mode
Config.DiskFailurePolicy	disk_failure_policy
double	disk_optimization_estimate_percentile
double	disk_optimization_page_cross_chance
Config.DiskOptimizationStrategy	disk_optimization_strategy
boolean	dynamic_snitch
double	dynamic_snitch_badness_threshold
int	dynamic_snitch_reset_interval_in_ms
int	dynamic_snitch_update_interval_in_ms
boolean	enable_materialized_views
boolean	enable_sasi_indexes
boolean	enable_scripted_user_defined_functions
boolean	enable_user_defined_functions
boolean	enable_user_defined_functions_threads Optionally disable asynchronous UDF execution.
EncryptionOptions.ServerEncryptionOptions	encryption_options
java.lang.String	endpoint_snitch
java.lang.Boolean	file_cache_round_up Because of the current BufferPool slab sizes of 64 kb, we store in the file cache buffers that divide 64 kb, so we need to round the buffer sizes to powers of two.
java.lang.Integer	file_cache_size_in_mb
int	gc_log_threshold_in_ms
int	gc_warn_threshold_in_ms
java.util.Set<java.lang.String>	hinted_handoff_disabled_datacenters
boolean	hinted_handoff_enabled
int	hinted_handoff_throttle_in_kb
ParameterizedClass	hints_compression
java.lang.String	hints_directory
int	hints_flush_period_in_ms
boolean	incremental_backups
java.lang.Integer	index_interval Deprecated.
java.lang.Long	index_summary_capacity_in_mb
int	index_summary_resize_interval_in_minutes
java.lang.String	initial_token
int	inter_dc_stream_throughput_outbound_megabits_per_sec
boolean	inter_dc_tcp_nodelay
java.lang.String	internode_authenticator
Config.InternodeCompression	internode_compression
int	internode_recv_buff_size_in_bytes
int	internode_send_buff_size_in_bytes
int	key_cache_keys_to_save
int	key_cache_save_period
java.lang.Long	key_cache_size_in_mb
java.lang.String	listen_address
java.lang.String	listen_interface
boolean	listen_interface_prefer_ipv6
boolean	listen_on_broadcast_address
int	max_hint_window_in_ms
int	max_hints_delivery_threads
int	max_hints_file_size_in_mb
java.lang.Integer	max_mutation_size_in_kb
int	max_streaming_retries Deprecated. retry support removed on CASSANDRA-10992
int	max_value_size_in_mb Max size of values in SSTables, in MegaBytes.
Config.MemtableAllocationType	memtable_allocation_type
java.lang.Float	memtable_cleanup_threshold
int	memtable_flush_writers
java.lang.Integer	memtable_heap_space_in_mb
java.lang.Integer	memtable_offheap_space_in_mb
int	min_free_space_per_drive_in_mb
boolean	native_transport_flush_in_batches_legacy
long	native_transport_max_concurrent_connections
long	native_transport_max_concurrent_connections_per_ip
long	native_transport_max_concurrent_requests_in_bytes
long	native_transport_max_concurrent_requests_in_bytes_per_ip
int	native_transport_max_frame_size_in_mb
java.lang.Integer	native_transport_max_negotiable_protocol_version
int	native_transport_max_threads
int	native_transport_port
java.lang.Integer	native_transport_port_ssl
int	num_tokens
int	otc_backlog_expiration_interval_ms
static int	otc_backlog_expiration_interval_ms_default Backlog expiration interval in milliseconds for the OutboundTcpConnection.
int	otc_coalescing_enough_coalesced_messages
java.lang.String	otc_coalescing_strategy
int	otc_coalescing_window_us
static int	otc_coalescing_window_us_default
java.lang.String	partitioner
int	permissions_cache_max_entries
int	permissions_update_interval_in_ms
int	permissions_validity_in_ms
double	phi_convict_threshold
java.lang.Long	prepared_statements_cache_size_mb Size of the CQL prepared statements cache in MB.
static java.lang.String	PROPERTY_PREFIX
long	range_request_timeout_in_ms
long	read_request_timeout_in_ms
int	repair_session_max_tree_depth
java.lang.String	request_scheduler
Config.RequestSchedulerId	request_scheduler_id
RequestSchedulerOptions	request_scheduler_options
long	request_timeout_in_ms
java.lang.String	role_manager
int	roles_cache_max_entries
int	roles_update_interval_in_ms
int	roles_validity_in_ms
java.lang.String	row_cache_class_name
int	row_cache_keys_to_save
int	row_cache_save_period
long	row_cache_size_in_mb
java.lang.String	rpc_address
java.lang.String	rpc_interface
boolean	rpc_interface_prefer_ipv6
boolean	rpc_keepalive
int	rpc_listen_backlog
int	rpc_max_threads
int	rpc_min_threads
int	rpc_port
java.lang.Integer	rpc_recv_buff_size_in_bytes
java.lang.Integer	rpc_send_buff_size_in_bytes
java.lang.String	rpc_server_type
java.lang.String	saved_caches_directory
ParameterizedClass	seed_provider
EncryptionOptions.ServerEncryptionOptions	server_encryption_options
long	slow_query_log_timeout_in_ms
boolean	snapshot_before_compaction
boolean	snapshot_on_duplicate_row_detection If true, when rows with duplicate clustering keys are detected during a read or compaction a snapshot will be taken.
int	ssl_storage_port
int	sstable_preemptive_open_interval_in_mb
boolean	start_native_transport
boolean	start_rpc
int	storage_port
int	stream_throughput_outbound_megabits_per_sec
java.lang.Integer	streaming_keep_alive_period_in_secs
int	streaming_socket_timeout_in_ms Deprecated. use this#streaming_keep_alive_period_in_secs instead
int	thrift_framed_transport_size_in_mb
int	thrift_max_message_length_in_mb Deprecated.
java.lang.Long	thrift_prepared_statements_cache_size_mb Size of the Thrift prepared statements cache in MB.
int	tombstone_failure_threshold
int	tombstone_warn_threshold
int	tracetype_query_ttl
int	tracetype_repair_ttl
TransparentDataEncryptionOptions	transparent_data_encryption_options
boolean	trickle_fsync
int	trickle_fsync_interval_in_kb
long	truncate_request_timeout_in_ms
java.lang.Integer	unlogged_batch_across_partitions_warn_threshold
long	user_defined_function_fail_timeout Time in milliseconds after a fatal UDF run-time situation is detected and action according to user_function_timeout_policy will take place.
long	user_defined_function_warn_timeout Time in milliseconds after a warning will be emitted to the log and to the client that a UDF runs too long.
Config.UserFunctionTimeoutPolicy	user_function_timeout_policy Defines what to do when a UDF ran longer than user_defined_function_fail_timeout.
int	windows_timer_interval
long	write_request_timeout_in_ms

Constructor Summary

Constructors

Constructor and Description
Config()

Method Summary

Modifier and Type	Method and Description
static java.util.function.Supplier<Config>	getOverrideLoadConfig()
static boolean	isClientMode() Deprecated. migrate to DatabaseDescriptor.isClientInitialized()
static void	log(Config config)
static void	setClientMode(boolean clientMode) Deprecated. migrate to DatabaseDescriptor.clientInitialization(boolean)
static void	setOverrideLoadConfig(java.util.function.Supplier<Config> loadConfig)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

PROPERTY_PREFIX

public static final java.lang.String PROPERTY_PREFIX

See Also:

Constant Field Values

cluster_name

public java.lang.String cluster_name

authenticator

public java.lang.String authenticator

authorizer

public java.lang.String authorizer

role_manager

public java.lang.String role_manager

permissions_validity_in_ms

public volatile int permissions_validity_in_ms

permissions_cache_max_entries

public volatile int permissions_cache_max_entries

permissions_update_interval_in_ms

public volatile int permissions_update_interval_in_ms

roles_validity_in_ms

public volatile int roles_validity_in_ms

roles_cache_max_entries

public volatile int roles_cache_max_entries

roles_update_interval_in_ms

public volatile int roles_update_interval_in_ms

credentials_validity_in_ms

public volatile int credentials_validity_in_ms

credentials_cache_max_entries

public volatile int credentials_cache_max_entries

credentials_update_interval_in_ms

public volatile int credentials_update_interval_in_ms

partitioner

public java.lang.String partitioner

auto_bootstrap

public boolean auto_bootstrap

hinted_handoff_enabled

public volatile boolean hinted_handoff_enabled

hinted_handoff_disabled_datacenters

public java.util.Set<java.lang.String> hinted_handoff_disabled_datacenters

max_hint_window_in_ms

public volatile int max_hint_window_in_ms

hints_directory

public java.lang.String hints_directory

seed_provider

public ParameterizedClass seed_provider

disk_access_mode

public Config.DiskAccessMode disk_access_mode

disk_failure_policy

public Config.DiskFailurePolicy disk_failure_policy

commit_failure_policy

public Config.CommitFailurePolicy commit_failure_policy

initial_token

public java.lang.String initial_token

num_tokens

public int num_tokens

allocate_tokens_for_keyspace

public java.lang.String allocate_tokens_for_keyspace

Triggers automatic allocation of tokens if set, using the replication strategy of the referenced keyspace

request_timeout_in_ms

public volatile long request_timeout_in_ms

read_request_timeout_in_ms

public volatile long read_request_timeout_in_ms

range_request_timeout_in_ms

public volatile long range_request_timeout_in_ms

write_request_timeout_in_ms

public volatile long write_request_timeout_in_ms

counter_write_request_timeout_in_ms

public volatile long counter_write_request_timeout_in_ms

cas_contention_timeout_in_ms

public volatile long cas_contention_timeout_in_ms

truncate_request_timeout_in_ms

public volatile long truncate_request_timeout_in_ms

streaming_socket_timeout_in_ms

@Deprecated
public int streaming_socket_timeout_in_ms

Deprecated. use this#streaming_keep_alive_period_in_secs instead

streaming_keep_alive_period_in_secs

public java.lang.Integer streaming_keep_alive_period_in_secs

cross_node_timeout

public boolean cross_node_timeout

slow_query_log_timeout_in_ms

public volatile long slow_query_log_timeout_in_ms

phi_convict_threshold

public volatile double phi_convict_threshold

concurrent_reads

public int concurrent_reads

concurrent_writes

public int concurrent_writes

concurrent_counter_writes

public int concurrent_counter_writes

concurrent_materialized_view_writes

public int concurrent_materialized_view_writes

concurrent_replicates

@Deprecated
public java.lang.Integer concurrent_replicates

Deprecated.

memtable_flush_writers

public int memtable_flush_writers

memtable_heap_space_in_mb

public java.lang.Integer memtable_heap_space_in_mb

memtable_offheap_space_in_mb

public java.lang.Integer memtable_offheap_space_in_mb

memtable_cleanup_threshold

public java.lang.Float memtable_cleanup_threshold

repair_session_max_tree_depth

public volatile int repair_session_max_tree_depth

storage_port

public int storage_port

ssl_storage_port

public int ssl_storage_port

listen_address

public java.lang.String listen_address

listen_interface

public java.lang.String listen_interface

listen_interface_prefer_ipv6

public boolean listen_interface_prefer_ipv6

broadcast_address

public java.lang.String broadcast_address

listen_on_broadcast_address

public boolean listen_on_broadcast_address

internode_authenticator

public java.lang.String internode_authenticator

start_rpc

public boolean start_rpc

rpc_address

public java.lang.String rpc_address

rpc_interface

public java.lang.String rpc_interface

rpc_interface_prefer_ipv6

public boolean rpc_interface_prefer_ipv6

broadcast_rpc_address

public java.lang.String broadcast_rpc_address

rpc_port

public int rpc_port

rpc_listen_backlog

public int rpc_listen_backlog

rpc_server_type

public java.lang.String rpc_server_type

rpc_keepalive

public boolean rpc_keepalive

rpc_min_threads

public int rpc_min_threads

rpc_max_threads

public int rpc_max_threads

rpc_send_buff_size_in_bytes

public java.lang.Integer rpc_send_buff_size_in_bytes

rpc_recv_buff_size_in_bytes

public java.lang.Integer rpc_recv_buff_size_in_bytes

internode_send_buff_size_in_bytes

public int internode_send_buff_size_in_bytes

internode_recv_buff_size_in_bytes

public int internode_recv_buff_size_in_bytes

start_native_transport

public boolean start_native_transport

native_transport_port

public int native_transport_port

native_transport_port_ssl

public java.lang.Integer native_transport_port_ssl

native_transport_max_threads

public int native_transport_max_threads

native_transport_max_frame_size_in_mb

public int native_transport_max_frame_size_in_mb

native_transport_max_concurrent_connections

public volatile long native_transport_max_concurrent_connections

native_transport_max_concurrent_connections_per_ip

public volatile long native_transport_max_concurrent_connections_per_ip

native_transport_flush_in_batches_legacy

public boolean native_transport_flush_in_batches_legacy

native_transport_max_concurrent_requests_in_bytes_per_ip

public volatile long native_transport_max_concurrent_requests_in_bytes_per_ip

native_transport_max_concurrent_requests_in_bytes

public volatile long native_transport_max_concurrent_requests_in_bytes

native_transport_max_negotiable_protocol_version

public java.lang.Integer native_transport_max_negotiable_protocol_version

thrift_max_message_length_in_mb

@Deprecated
public int thrift_max_message_length_in_mb

Deprecated.

max_value_size_in_mb

public int max_value_size_in_mb

Max size of values in SSTables, in MegaBytes. Default is the same as the native protocol frame limit: 256Mb. See AbstractType for how it is used.

thrift_framed_transport_size_in_mb

public int thrift_framed_transport_size_in_mb

snapshot_before_compaction

public boolean snapshot_before_compaction

auto_snapshot

public boolean auto_snapshot

column_index_size_in_kb

public int column_index_size_in_kb

column_index_cache_size_in_kb

public int column_index_cache_size_in_kb

batch_size_warn_threshold_in_kb

public volatile int batch_size_warn_threshold_in_kb

batch_size_fail_threshold_in_kb

public volatile int batch_size_fail_threshold_in_kb

unlogged_batch_across_partitions_warn_threshold

public java.lang.Integer unlogged_batch_across_partitions_warn_threshold

concurrent_compactors

public volatile java.lang.Integer concurrent_compactors

compaction_throughput_mb_per_sec

public volatile int compaction_throughput_mb_per_sec

compaction_large_partition_warning_threshold_mb

public volatile int compaction_large_partition_warning_threshold_mb

min_free_space_per_drive_in_mb

public int min_free_space_per_drive_in_mb

max_streaming_retries

@Deprecated
public int max_streaming_retries

Deprecated. retry support removed on CASSANDRA-10992

stream_throughput_outbound_megabits_per_sec

public volatile int stream_throughput_outbound_megabits_per_sec

inter_dc_stream_throughput_outbound_megabits_per_sec

public volatile int inter_dc_stream_throughput_outbound_megabits_per_sec

data_file_directories

public java.lang.String[] data_file_directories

saved_caches_directory

public java.lang.String saved_caches_directory

commitlog_directory

public java.lang.String commitlog_directory

commitlog_total_space_in_mb

public java.lang.Integer commitlog_total_space_in_mb

commitlog_sync

public Config.CommitLogSync commitlog_sync

commitlog_sync_batch_window_in_ms

public double commitlog_sync_batch_window_in_ms

commitlog_sync_period_in_ms

public int commitlog_sync_period_in_ms

commitlog_segment_size_in_mb

public int commitlog_segment_size_in_mb

commitlog_compression

public ParameterizedClass commitlog_compression

commitlog_max_compression_buffers_in_pool

public int commitlog_max_compression_buffers_in_pool

transparent_data_encryption_options

public TransparentDataEncryptionOptions transparent_data_encryption_options

max_mutation_size_in_kb

public java.lang.Integer max_mutation_size_in_kb

cdc_enabled

public boolean cdc_enabled

cdc_raw_directory

public java.lang.String cdc_raw_directory

cdc_total_space_in_mb

public int cdc_total_space_in_mb

cdc_free_space_check_interval_ms

public int cdc_free_space_check_interval_ms

commitlog_periodic_queue_size

@Deprecated
public int commitlog_periodic_queue_size

Deprecated.

endpoint_snitch

public java.lang.String endpoint_snitch

dynamic_snitch

public boolean dynamic_snitch

dynamic_snitch_update_interval_in_ms

public int dynamic_snitch_update_interval_in_ms

dynamic_snitch_reset_interval_in_ms

public int dynamic_snitch_reset_interval_in_ms

dynamic_snitch_badness_threshold

public double dynamic_snitch_badness_threshold

request_scheduler

public java.lang.String request_scheduler

request_scheduler_id

public Config.RequestSchedulerId request_scheduler_id

request_scheduler_options

public RequestSchedulerOptions request_scheduler_options

server_encryption_options

public EncryptionOptions.ServerEncryptionOptions server_encryption_options

client_encryption_options

public EncryptionOptions.ClientEncryptionOptions client_encryption_options

encryption_options

public EncryptionOptions.ServerEncryptionOptions encryption_options

internode_compression

public Config.InternodeCompression internode_compression

index_interval

@Deprecated
public java.lang.Integer index_interval

Deprecated.

hinted_handoff_throttle_in_kb

public int hinted_handoff_throttle_in_kb

batchlog_replay_throttle_in_kb

public int batchlog_replay_throttle_in_kb

max_hints_delivery_threads

public int max_hints_delivery_threads

hints_flush_period_in_ms

public int hints_flush_period_in_ms

max_hints_file_size_in_mb

public int max_hints_file_size_in_mb

hints_compression

public ParameterizedClass hints_compression

sstable_preemptive_open_interval_in_mb

public int sstable_preemptive_open_interval_in_mb

incremental_backups

public volatile boolean incremental_backups

trickle_fsync

public boolean trickle_fsync

trickle_fsync_interval_in_kb

public int trickle_fsync_interval_in_kb

key_cache_size_in_mb

public java.lang.Long key_cache_size_in_mb

key_cache_save_period

public volatile int key_cache_save_period

key_cache_keys_to_save

public volatile int key_cache_keys_to_save

row_cache_class_name

public java.lang.String row_cache_class_name

row_cache_size_in_mb

public long row_cache_size_in_mb

row_cache_save_period

public volatile int row_cache_save_period

row_cache_keys_to_save

public volatile int row_cache_keys_to_save

counter_cache_size_in_mb

public java.lang.Long counter_cache_size_in_mb

counter_cache_save_period

public volatile int counter_cache_save_period

counter_cache_keys_to_save

public volatile int counter_cache_keys_to_save

file_cache_size_in_mb

public java.lang.Integer file_cache_size_in_mb

file_cache_round_up

public java.lang.Boolean file_cache_round_up

Because of the current BufferPool slab sizes of 64 kb, we store in the file cache buffers that divide 64 kb, so we need to round the buffer sizes to powers of two. This boolean controls weather they are rounded up or down. Set it to true to round up to the next power of two, set it to false to round down to the previous power of two. Note that buffer sizes are already rounded to 4 kb and capped between 4 kb minimum and 64 kb maximum by the Config.DiskOptimizationStrategy. By default, this boolean is set to round down when disk_optimization_strategy is ssd, and to round up when it is spinning.

buffer_pool_use_heap_if_exhausted

public boolean buffer_pool_use_heap_if_exhausted

disk_optimization_strategy

public Config.DiskOptimizationStrategy disk_optimization_strategy

disk_optimization_estimate_percentile

public double disk_optimization_estimate_percentile

disk_optimization_page_cross_chance

public double disk_optimization_page_cross_chance

inter_dc_tcp_nodelay

public boolean inter_dc_tcp_nodelay

memtable_allocation_type

public Config.MemtableAllocationType memtable_allocation_type

tombstone_warn_threshold

public volatile int tombstone_warn_threshold

tombstone_failure_threshold

public volatile int tombstone_failure_threshold

index_summary_capacity_in_mb

public volatile java.lang.Long index_summary_capacity_in_mb

index_summary_resize_interval_in_minutes

public volatile int index_summary_resize_interval_in_minutes

gc_log_threshold_in_ms

public int gc_log_threshold_in_ms

gc_warn_threshold_in_ms

public int gc_warn_threshold_in_ms

tracetype_query_ttl

public int tracetype_query_ttl

tracetype_repair_ttl

public int tracetype_repair_ttl

otc_coalescing_strategy

public java.lang.String otc_coalescing_strategy

otc_coalescing_window_us_default

public static final int otc_coalescing_window_us_default

See Also:

Constant Field Values

otc_coalescing_window_us

public int otc_coalescing_window_us

otc_coalescing_enough_coalesced_messages

public int otc_coalescing_enough_coalesced_messages

otc_backlog_expiration_interval_ms_default

public static final int otc_backlog_expiration_interval_ms_default

Backlog expiration interval in milliseconds for the OutboundTcpConnection.

See Also:

Constant Field Values

otc_backlog_expiration_interval_ms

public volatile int otc_backlog_expiration_interval_ms

windows_timer_interval

public int windows_timer_interval

prepared_statements_cache_size_mb

public java.lang.Long prepared_statements_cache_size_mb

Size of the CQL prepared statements cache in MB. Defaults to 1/256th of the heap size or 10MB, whichever is greater.

thrift_prepared_statements_cache_size_mb

public java.lang.Long thrift_prepared_statements_cache_size_mb

Size of the Thrift prepared statements cache in MB. Defaults to 1/256th of the heap size or 10MB, whichever is greater.

enable_user_defined_functions

public boolean enable_user_defined_functions

enable_scripted_user_defined_functions

public boolean enable_scripted_user_defined_functions

enable_materialized_views

public boolean enable_materialized_views

enable_sasi_indexes

public boolean enable_sasi_indexes

enable_user_defined_functions_threads

public boolean enable_user_defined_functions_threads

Optionally disable asynchronous UDF execution. Disabling asynchronous UDF execution also implicitly disables the security-manager! By default, async UDF execution is enabled to be able to detect UDFs that run too long / forever and be able to fail fast - i.e. stop the Cassandra daemon, which is currently the only appropriate approach to "tell" a user that there's something really wrong with the UDF. When you disable async UDF execution, users MUST pay attention to read-timeouts since these may indicate UDFs that run too long or forever - and this can destabilize the cluster.

user_defined_function_warn_timeout

public long user_defined_function_warn_timeout

Time in milliseconds after a warning will be emitted to the log and to the client that a UDF runs too long. (Only valid, if enable_user_defined_functions_threads==true)

user_defined_function_fail_timeout

public long user_defined_function_fail_timeout

Time in milliseconds after a fatal UDF run-time situation is detected and action according to user_function_timeout_policy will take place. (Only valid, if enable_user_defined_functions_threads==true)

user_function_timeout_policy

public Config.UserFunctionTimeoutPolicy user_function_timeout_policy

Defines what to do when a UDF ran longer than user_defined_function_fail_timeout. Possible options are: - 'die' - i.e. it is able to emit a warning to the client before the Cassandra Daemon will shut down. - 'die_immediate' - shut down C* daemon immediately (effectively prevent the chance that the client will receive a warning). - 'ignore' - just log - the most dangerous option. (Only valid, if enable_user_defined_functions_threads==true)

back_pressure_enabled

public volatile boolean back_pressure_enabled

back_pressure_strategy

public volatile ParameterizedClass back_pressure_strategy

snapshot_on_duplicate_row_detection

public volatile boolean snapshot_on_duplicate_row_detection

If true, when rows with duplicate clustering keys are detected during a read or compaction a snapshot will be taken. In the read case, each a snapshot request will be issued to each replica involved in the query, for compaction the snapshot will be created locally. These are limited at the replica level so that only a single snapshot per-day can be taken via this method. This requires check_for_duplicate_rows_during_reads and/or check_for_duplicate_rows_during_compaction below to be enabled

check_for_duplicate_rows_during_reads

public volatile boolean check_for_duplicate_rows_during_reads

If these are enabled duplicate keys will get logged, and if snapshot_on_duplicate_row_detection is enabled, the table will get snapshotted for offline investigation

check_for_duplicate_rows_during_compaction

public volatile boolean check_for_duplicate_rows_during_compaction

Constructor Detail

Config

public Config()

Method Detail

isClientMode

@Deprecated
public static boolean isClientMode()

Deprecated. migrate to DatabaseDescriptor.isClientInitialized()

setClientMode

@Deprecated
public static void setClientMode(boolean clientMode)

Deprecated. migrate to DatabaseDescriptor.clientInitialization(boolean)

Client mode means that the process is a pure client, that uses C* code base but does not read or write local C* database files.

getOverrideLoadConfig

public static java.util.function.Supplier<Config> getOverrideLoadConfig()

setOverrideLoadConfig

public static void setOverrideLoadConfig(java.util.function.Supplier<Config> loadConfig)

log

public static void log(Config config)