Configuring Local Disk Cache for JobHistory
Scenarios
JobHistory can use local disks to cache the historical data of Spark applications to prevent the JobHistory memory from loading a large amount of application data, reducing the memory pressure. In addition, the cached data can be reused to improve the speed for subsequent application access.
Parameter Configuration
Log in to FusionInsight Manager, choose Cluster > Name of the desired cluster > Services > Spark2x > Configurations, click the All Configurations tab, and search for the following parameters:
|
Parameter |
Description |
Default Value |
|---|---|---|
|
spark.history.store.path |
Specifies the local directory for storing historical information for JobHistory. If this parameter is specified, JobHistory caches historical application data in the local disk instead of the memory. |
${BIGDATA_HOME}/tmp/spark2x_JobHistory |
|
spark.history.store.maxDiskUsage |
Specifies the maximum available space of the local disk cache. |
10 GB |
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