Library compression configuration properties
By default, library items created by users of Spotfire Analyst or the web client, or items that are imported into the Spotfire library, are compressed using the gzip format. This design provides more efficient use of library space, whether the library is stored in the Spotfire database or in an external storage mechanism. You can change the defaults to meet your specific library needs, including disabling it altogether.
The default configuration is designed to provide the best compression-to-performance ratio; however, you might need to change the default configuration to best suit your storage and retrieval needs. The following properties provide this option. To set any of these configuration properties, use the command-line command set-config-prop, passing in the property name and value.
| Property name | Description | Default |
|---|---|---|
activities.cleanup-interval-seconds
|
Specifies the interval, in seconds, before the system checks long-running activities for termination. | 3600
|
activities.compression.max-concurrent
|
Specifies the maximum number of concurrent compression or uncompression activities to run across the cluster. | 10
|
activities.compression.max-execution-time-seconds
|
Specifies the duration, in seconds, of compression activity before terminating the operation as failed. | 600
|
activities.max-threads
|
Specifies the maximum number of threads to allocate for all background running activities in a given Spotfire Server node. | 10
|
activities.prune-tasks-older-than-seconds
|
Specifies the duration, in seconds, for pruning activities to complete. (Can result in success, failed, or terminated) | 86400
|
activities.uncompression.max-execution-time-seconds
|
Specifies the duration, in seconds, of uncompression activity before terminating the operation as failed. | 600
|
library.compressed-content.compression-level
|
Specifies the level of compression. Can be
set to a value from
1 to
9, inclusive, with
1 being the best for speed and
9 being the best for compression. The default
uses the compression level provided by the operating system that hosts Spotfire
Server.
|
-1
|
library.compressed-content.enabled
|
Specifies whether content compression is enabled. | true
|
library.compression.migration.batch
|
Specifies the number of library items to compress in the current batch. | 1000
|
library.compression.migration.wait
|
Specifies the length of time, in
milliseconds, to wait before pulling the next batch to process.
When the maximum compression or uncompression activities are
running (specified by
|
5000
|
library.digest-verification.enabled
|
Specifies that the verification check is run on the digest of library contents when it is loaded or unloaded from the database or external storage. | true
|
Additionally, the command-line command
export-library-content has the optional
parameter
compressed-content, with the default of
true, which specifies whether library content should
be compressed when exported. Users can set this option to
false to import content to an earlier release of
Spotfire, where compressed content is not supported.