Dynamic Configuration Parameters | Falcon LogScale Self-Hosted 1.71.0-1.76.3 | LogScale Documentation

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Content was updated:Mar 5, 2024

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
`BucketStorageKeySchemeVersion`	`2 MB`		Sets a new format for the keys (file names) placed in the bucket.
`BucketStorageWriteVersion`	`3`		Allows files larger than 2GB in bucket storage for less memory pressure.
`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`	introduced in 1.76.1	Allows the shutdown of all in-progress segments and forces a write (and upload) of global snapshot.
`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()`.
`JoinRowLimit`	`200,000 rows`		Max number of rows that `join()` and `selfJoin()` can return.
`LiveQueryMemoryLimit`	`100,000,000 bytes`	deprecated in 1.116.0	Amount of memory that a live query can consume during its execution.
`MaxIngestRequestSize`	`33,554,432 bytes`		Size limit of ingest requests after content-encoding has been applied.
`QueryMemoryLimit`	`100,000,000 bytes`	deprecated in 1.116.0	How much memory a non-live query can consume during its execution.
`QueryResultRowCountLimit`	`100,000 rows`		How many events a query can return.
`StateRowLimit`	`20,000 rows`		Maximum number of rows allowed in functions.
`TargetMaxRateForDatasource`	`2 MB`		Target maximum rate of ingest for each shard of a datasource.
`UndersizedMergingRetentionPercentage`	`20 %`		Time span percentage that can be merged together when selecting undersized segments to merge.

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