Dynamic Configuration Parameters
Dynamic Configuration parameters allow for setting configuration values for the cluster while it is running.
To get the current configuration value for a dynamic variable, see Getting Dynamic Configuration List
To set the current configuration value for a dynamic variable, see Setting a Dynamic Configuration Value
Table: Dynamic Configuration Parameters Table
| Variable | Default Value | Availability | Description |
|---|---|---|---|
AdHocTablesLimit | 10 | Maximum number of ad hoc tables that can be created. Limits the total number of ad hoc query result tables that can exist in the system at one time. | |
ArchivingClusterWideDisabled | true | Boolean flag that controls whether archiving is disabled across the entire cluster. When set to true, all archiving operations will be disabled for all repositories in the cluster regardless of individual settings. | |
ArchivingClusterWideEndAt | 7 | Timestamp that defines when cluster-wide archiving should end. This setting applies to all repositories that match the archiving cluster-wide regex pattern. The format is ISO 8601 (e.g., "2023-12-31T23:59:59Z"). When empty, archiving will continue indefinitely (or until disabled). | |
ArchivingClusterWideRegexForRepoName | .* | Regular expression pattern to match repository names for cluster-wide archiving operations. Only repositories with names matching this pattern will be subject to cluster-wide archiving settings. Use ".*" to match all repositories or provide a specific pattern to target a subset of repositories. | |
ArchivingClusterWideStartFrom | 1 | Timestamp that defines when cluster-wide archiving should begin. This setting applies to all repositories that match the archiving cluster-wide regex pattern. The format is ISO 8601 (e.g., "2023-01-01T00:00:00Z"). When empty, archiving will start from the beginning of available data. | |
BlockSignup | true | Boolean flag that controls whether new user signups are blocked. When set to true, new user registration will be disabled, preventing the creation of new accounts. Useful for maintenance periods or when you want to control access to the system. | |
BucketStorageKeySchemeVersion | 2 MB | Sets a new format for the keys (file names) placed in the bucket. | |
BucketStorageUploadInfrequentThresholdDays | Minimum data retention days remained to switch from default "S3 Standard" to "S3 Intelligent-Tiering". | ||
BucketStorageWriteVersion | 3 | Allows files larger than 2GB in bucket storage for less memory pressure. | |
DebugAuditRequestTrace | true | Controls whether to enable debug tracing for audit requests. | |
DeleteDuplicatedNameViewsAfterMerging | false | Controls whether to delete views with duplicate names after merging. | |
DisableAnalyticsJob | true | Controls whether analytics jobs are disabled. | |
DisableUserTracking | true | Controls whether user tracking is disabled. | |
DisableViewWithSameNameCleanup | true | Disable views with the same name during clean-up. | |
EnableDemoData | true | Controls whether demo data is enabled. | |
EnableGlobalJsonStatsLogger | false | Controls whether the global JSON statistics logger is enabled. | |
ExperimentalSortDataStructure | false | Controls whether to use experimental sort data structure. | |
ExternalFunctionRequestResponseEventCountLimit | 10,000 | Maximum number of events allowed in an external function response. | |
ExternalFunctionRequestResponseSizeLimitBytes | 10,485,760 | Maximum size in bytes allowed for an external function response. | |
FdrMaxNodesPerFeed | 5 | Maximum number of nodes allowed per feed for FDR. | |
FdrS3FileSizeMax | 250,000,000 | Maximum file size in bytes for S3 files in FDR. | |
FdrEnable | false | Turns FDR polling on/off on the entire cluster with a single update. | |
FdrExcludedNodes | empty | Excludes specific nodes from polling from FDR. | |
FdrMaxNodes | 5 nodes | Maximum number of nodes that simultaneously poll data from the same FDR feed. | |
FileReplicationFactor | 5 | Replication factor for files in the cluster. | |
FlushSegmentsAndGlobalOnShutdown | false | Allows the shutdown of all in-progress segments and forces a write (and upload) of global snapshot. | |
GracePeriodBeforeDeletingDeadEphemeralHostsMs | 100 | Grace period in milliseconds before dead ephemeral hosts are deleted. | |
GraphQLSelectionSizeLimit | 1,000 queries | added in 1.100 | Number of GraphQL queries on the total number of selected fields and fragments. |
GraphQLAliasCountLimit | 100 | Maximum number of aliases allowed in a GraphQL query. | |
GraphQLDirectiveCountLimit | 100 | Maximum number of directives allowed in a GraphQL query. | |
GraphQLQueryAnalysisDisabled | true | Controls whether GraphQL query analysis is disabled. | |
GroupDefaultLimit | 20,000 group elements |
Default limit of group elements allowed in functions like
groupBy() or selfJoin().
| |
GroupMaxLimit | 1,000,000 group elements |
Maximum limit of group elements allowed in
groupBy().
| |
IngestFeedGovernorCycleDuration | 1,000 | Duration in milliseconds for each ingest feed governor cycle. | |
IngestFeedMaxConcurrentPolls | 1,000 | Maximum number of concurrent polls allowed for ingest feeds. | |
IsAutomaticUpdateCheckingAllowed | false | Controls whether automatic update checking is allowed. | |
JoinDefaultLimit | 100,000 | Default limit for join operations in queries. | |
JoinRowLimit | 200,000 rows |
Max number of rows that | |
LiveQueryMemoryLimit | 100,000,000 bytes | deprecated in 1.116 | Amount of memory that a live query can consume during its execution. |
MaxAccessTokenTTL | 2,592,000 | Maximum time-to-live in seconds for access tokens. | |
MaxConcurrentQueriesOnWorker | 1,000 | Maximum number of historic queries that can be executed on a single worker node. This limit does not apply to live parts of queries. | |
MaxQueryPenaltyCreditForBlockedQueriesFactor | 5.0 | Maximum factor for penalty credit given for blocked queries. | |
MaxQueryPollsForWorker | 100 | Maximum number of worker polls (across all workers) scheduled per second. | |
MaxRelocatedDatasourcesInGlobal | 100 | Maximum number of datasources that can be relocated to global. | |
MaxIngestRequestSize | 33,554,432 bytes | Size limit of ingest requests after content-encoding has been applied. | |
MinQueryPermitsFactor | 1.0 | Minimum factor for query permits allocation. | |
MinimumHumioVersion | 1.0.0 | Minimum version of Humio (LogScale) required for the cluster. | |
MultiPassDefaultIterationLimit | 10 | Default limit for the number of iterations in multi-pass operations. | |
MultiPassMaxIterationLimit | 50 | Maximum limit for the number of iterations in multi-pass operations. | |
ParserThrottlingAllocationFactor | 1.0 | Factor used to determine the allocation of resources for parser throttling. Controls the fraction of resources dedicated to parsing operations to prevent overload. | |
QueryFSMSyncMergeThreshold | 1,000 | Threshold value for synchronous merging in the Query Finite State Machine (FSM). Controls when query results should be merged synchronously rather than asynchronously. | |
QueryCoordinatorMaxHeapFraction | 0.5 | added in 1.97 | Configures query queueing based on the available memory in the query coordinator. |
QueryMemoryLimit | 100,000,000 bytes | deprecated in 1.116 | How much memory a non-live query can consume during its execution. |
QueryPartitionAutoBalance | true | added in 1.100 | Turns on/off automatic balancing of query partitions across nodes. |
QueryResultRowCountLimit | 500,000 rows | How many events a query can return. | |
RejectIngestOnParserExceedingFraction | 0.85 | Fraction threshold that determines when to reject ingest operations if a parser is exceeding its allocated resources. When parser resource usage exceeds this fraction of its allocation, new ingest operations will be rejected. | |
SampleIntervalForDatasourceRates | 60,000 | Interval in milliseconds at which datasource rates are sampled. Controls how frequently the system measures and updates data ingest rates for each datasource. | |
SelfJoinLimit | 10 | Maximum number of self-joins allowed in a query. Limits the complexity of queries to prevent excessive resource consumption from queries with too many self-joins. If 0 or less, then it is unlimited. | |
StateRowLimit | 500,000 rows |
Maximum number of rows allowed in functions. | |
StaticQueryFractionOfCores | 2 | added in 1.100 | Limit in the queries that one organization or user can run on a certain percentage of mapper threads. |
TableCacheMemoryAllowanceFraction | 0.2 | Specifies the maximum fraction of available memory for the table cache. Controls how much of the system's memory can be used for caching query result tables. It is specified as a fraction of the total memory available for files. | |
TargetMaxRateForDatasource | 2 MB | Target maximum rate of ingest for each shard of a datasource. | |
UnauthenticatedGraphQLSelectionSizeLimit | 150 queries | added in 1.100.3 | Number of GraphQL queries on the total number of selected fields and fragments for unauthenticated users. |
UndersizedMergingRetentionPercentage | 20 % | Time span percentage that can be merged together when selecting undersized segments to merge. |