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
`AggregatorOutputRowLimit`	`100 million` rows	introduced in 1.158.0	Number of rows allowed in queries with aggregate functions.
`AstDepthLimit`	`1,900` rows	removed in 1.164.0	Limits the depth of a query
`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.
`CancelQueriesExceedingAggregateOutputRowLimit`	`disabled`	introduced in 1.158.0	Cancels aggregate functions in queries that exceed the limit set by the `AggregatorOutputRowLimit` configuration.
`defaultDigestReplicationFactor`	`2`		Configures the replication factor used for the digest partitions table.
`defaultSegmentReplicationFactor`	`2`		Specifies the number of replicas each segment file will have.
`DelayIngestResponseDueToIngestLagScale`	`300,000` milliseconds		Sets the number of milliseconds of lag that adds `1` to the factor applied.
`DelayIngestResponseDueToIngestLagMaxFactor`	`2`		Sets the delay of the ingest response when the digest node experiences digest lag.
`DelayIngestResponseDueToIngestLagThreshold`	`20,000` milliseconds		Sets the number of milliseconds of digest lag where the feature starts to kick in.
`DisableNewRegexEngine`	`disabled`	introduced in 1.161.0	Disables the LogScale Regular Expression Engine V2 globally on the cluster, preventing the submission of new queries.
`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.
`FlushSegmentsAndGlobalOnShutdown`	`false`		Allows the shutdown of all in-progress segments and forces a write (and upload) of global snapshot.
`GraphQLSelectionSizeLimit`	`1,000` queries		Number of GraphQL queries on the total number of selected fields and fragments.
`GraphQlDirectivesAmountLimit`	`25` directives		The amount of GraphQL directives allowed in a query.
`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()`.
`IngestFeedAwsDownloadMaxObjectSize`	`2,147,483,648` bytes		Max size of objects downloaded from S3.
`IngestFeedAwsProcessingDownloadBufferSize`	`8,388,608` bytes		Size of the buffer when downloading.
`IngestFeedAwsProcessingEventBufferSize`	`1` MB		Size of the buffer after preprocessing and splitting into individual events.
`IngestFeedAwsProcessingEventsPerBatch`	`1,000` events		Number of events ingested per batch.
`IngestFeedGovernorRateOverride`	`100,000`		Change in rate when under/over the setpoint. Increasing this will make the governor more aggressive in changing the ingest rate.
`IngestFeedGovernorIngestDelayHigh`	`10` seconds		Default ingest delay high setpoint for the ingest feed governor.
`IngestFeedGovernorIngestDelayLow`	`5` seconds		Default ingest delay low setpoint for the ingest feed governor.
`JoinRowLimit`	`200,000` rows		Max number of rows that `join()` and `selfJoin()` can return.
`LiveAdhocTableUpdatePeriodMinimumMs`	`10,000 ms`	introduced in 1.163.0	Defines the minimum period of time between two table updates. The default value is 10.000 ms and the value is restricted to 10,000 - 604,800,000 (1 week). See Ad-hoc Tables Update Frequency and Cluster Performance.
`LiveQueryMemoryLimit`	`100,000,000` bytes	deprecated in 1.116.0	Amount of memory that a live query can consume during its execution.
`LookupTableSyncAwaitSeconds`	`30` seconds		Waiting time before the lookup operation fails.
`MatchFilesMaxHeapFraction`	`0.5`		Total fraction of the heap allowed for lookup tables. Defaults to half of the total configured heap.
`MaxCsvFileUploadSizeBytes`	`209,715,200` bytes		Maximum size of uploaded CSV files.
`MaxIngestRequestSize`	`33,554,432` bytes		Size limit of ingest requests after content-encoding has been applied.
`MaxJsonFileUploadSizeBytes`	`104,857,600` bytes		Maximum size of uploaded JSON files. If `MAX_FILEUPLOAD_SIZE` is set, its value will be the default.
`MaxOpenSegmentsOnWorker`	`50,000` segment files		Maximum open segment files for the scheduler. Do not modify this setting unless advised to do so by CrowdStrike Support.
`ParserBacktrackingLimit`	`2,000` backtracks	introduced in 1.158.0	Number of backtracks for how many new events can be created from a single input event in parsers.
`QueryBacktrackingLimit`	`2,000` backtracks		Number of allowed query backtracks to limit a query iterating over individual events too many times.
`QueryCoordinatorMaxHeapFraction`	`0.5`		Configures query queueing based on the available memory in the query coordinator.
`QueryCoordinatorMemoryLimit`	`4,000,000,000` bytes		Memory that the query coordinator can consume during execution per query, to ensure that the coordinating nodes of a cluster do not run out of memory.
`QueryMemoryLimit`	`100,000,000` bytes	deprecated in 1.116.0	How much memory a non-live query can consume during its execution.
`QueryPartitionAutoBalance`	`true`		Turns on/off automatic balancing of query partitions across nodes.
`QueryResultRowCountLimit`	`100,000` rows		How many events a query can return.
`RdnsDefaultLimit`	`5,000` events		Default number of resulting events allowed in `rdns()`.
`RdnsMaxLimit`	`20,000` events		Maximum allowed number of resulting events in `rdns()`.
`ReplaceANSIEscapeCodes`	`true`		Specifies whether LogScale replaces ANSI escape codes in the result set.
`StateRowLimit`	`20,000` rows		Maximum number of rows allowed in functions.
`StaticQueryFractionOfCores`	`2`		Limit in the queries that one organization or user can run on a certain percentage of mapper threads.
`TableCacheMaxStorageFraction`	`0.001`		Fraction of disk space allowed for caching file data used for query functions such as `match()` and `readFile()`.
`TableCacheMaxStorageFractionForIngestAndHttpOnly`	`0.1`		Fraction of disk space allowed on ingest or httponly node for caching file data used for query functions such as `match()` and `readFile()`.
`TargetMaxRateForDatasource`	`2` MB		Target maximum rate of ingest for each shard of a datasource.
`UnauthenticatedGraphQLSelectionSizeLimit`	`150` queries		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.

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