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Clarify/expand MoveTables CLI help. #6624

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Sep 3, 2020
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Clarify/expand MoveTables CLI help. #6624

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20f8f8d
Clarify/expand MoveTables CLI help.
aquarapid Aug 26, 2020
f51364c
Add default value of -vreplication_tablet_type
aquarapid Aug 27, 2020
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6 changes: 3 additions & 3 deletions go/vt/vtctl/vtctl.go
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Original file line number Diff line number Diff line change
Expand Up @@ -316,7 +316,7 @@ var commands = []commandGroup{
"Start a Resharding process. Example: Reshard -cells='zone1,alias1' -tablet_types='master,replica,rdonly' ks.workflow001 '0' '-80,80-'"},
{"MoveTables", commandMoveTables,
"[-cells=<cells>] [-tablet_types=<source_tablet_types>] -workflow=<workflow> <source_keyspace> <target_keyspace> <table_specs>",
`Move table(s) to another keyspace, table_specs is a list of tables or the tables section of the vschema for the target keyspace. Example: '{"t1":{"column_vindexes": [{"column": "id1", "name": "hash"}]}, "t2":{"column_vindexes": [{"column": "id2", "name": "hash"}]}}'`},
`Move table(s) to another keyspace, table_specs is a list of tables or the tables section of the vschema for the target keyspace. Example: '{"t1":{"column_vindexes": [{"column": "id1", "name": "hash"}]}, "t2":{"column_vindexes": [{"column": "id2", "name": "hash"}]}}'. In the case of an unsharded target keyspace the vschema for each table may be empty. Example: '{"t1":{}, "t2":{}}'.`},
{"DropSources", commandDropSources,
"[-dry_run] [-rename_tables] <keyspace.workflow>",
"After a MoveTables or Resharding workflow cleanup unused artifacts like source tables, source shards and blacklists"},
Expand Down Expand Up @@ -1891,9 +1891,9 @@ func commandReshard(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.F
}

func commandMoveTables(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
workflow := subFlags.String("workflow", "", "Workflow name. Will be used to later migrate traffic.")
workflow := subFlags.String("workflow", "", "Workflow name. Can be any descriptive string. Will be used to later migrate traffic via SwitchReads/SwitchWrites.")
cells := subFlags.String("cells", "", "Cell(s) or CellAlias(es) (comma-separated) to replicate from.")
tabletTypes := subFlags.String("tablet_types", "", "Source tablet types to replicate from.")
tabletTypes := subFlags.String("tablet_types", "", "Source tablet types to replicate from (e.g. master, replica, rdonly). Defaults to -vreplication_tablet_type parameter value for the tablet, which has the default value of replica.")
if err := subFlags.Parse(args); err != nil {
return err
}
Expand Down