Workflow

Wrapper on VExec to perform common actions on a workflow

Command #

Workflow  [-dry_run] <keyspace.workflow> <action>

Description #

Workflow is a convenience command for useful actions on a workflow that you can use instead of actually specifying a query to VExec.

Parameters #

-dry-run #

optional
default false

You can do a dry run where no actual action is taken but the command logs all the actions that would be taken by SwitchReads.

keyspace.workflow #

mandatory

Name of target keyspace and the associated workflow to SwitchWrites for.

action #

mandatory

action is one of
  • stop: sets the state of the workflow to Stopped: no further vreplication will happen until workflow is restarted
  • start: restarts a Stopped workflows
  • delete: removes the entries for this workflow in _vt.vreplication
  • show: returns a JSON object with details about the associated shards and also with all the columns from the _vt.vreplication table
  • listall: returns a comma separated list of all running workflows in a keyspace
  • tags: a comma-separated list of key:value pairs that are used to tag the tablet

Example #

vtctlclient  Workflow keyspace1.workflow1 stop
vtctlclient  Workflow keyspace1.workflow1 show
vtctlclient  Workflow keyspace1 listall