06-scheduler-en.md

title	Scheduler Configuration
summary	Learn how to configure Scheduler.

Scheduler Configuration

Currently, Gravity supports only one Scheduler plugin:

• batch-table-scheduler: Guarantees that update operations on the data in the same row defined by the primary key are performed in order.

batch-table-scheduler configuration

#
# `batch-table-scheduler` configuration
# Optional
#
[scheduler]
type = "batch-table-scheduler"

[scheduler.config]
# "100" by default
nr-worker = 100

# "1" by default
batch-size = 1

# "1024" by default
queue-size = 1024

# "10240" by default
sliding-window-size = 10240

In the above configuration:

• batch-table-scheduler uses the worker pool method to call the interface defined by Output.

  • nr-worker is the number of workers.

• batch-table-scheduler uses Output in the unit of batch and guarantees that one batch has the same core.Msg.Table.

  • batch-size is the size of a batch.

• batch-table-scheduler uses the sliding window to guarantee the positions in Input are saved in order.

  • sliding-window-size is the size of a sliding window.