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create-space-no-host #1548

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Jul 22, 2022
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create-space-no-host #1548

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8 changes: 8 additions & 0 deletions docs-2.0/3.ngql-guide/9.space-statements/1.create-space.md
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Expand Up @@ -42,6 +42,14 @@ CREATE SPACE [IF NOT EXISTS] <graph_space_name> (

- The length of the VID should not be longer than `N` characters. If it exceeds `N`, Nebula Graph throws `The VID must be a 64-bit integer or a string fitting space vertex id length limit.`.

- If the `Host not enough!` error appears, the immediate cause is that the number of online storage hosts is less than the value of `replica_factor` specified when creating a graph space. In this case, you can use the `SHOW HOSTS` command to see if the following situations occur:

- For the case where there is only one storage host in a cluster, the value of `replica_factor` can only be specified to `1`. Or create a graph space after storage hosts are scaled out.

- A new storage host is found, but `ADD HOSTS` is not executed to activate it. In this case, run `SHOW HOSTS` to locate the new storage host information and then run `ADD HOSTS` to activate it. A graph space can be created after there are enough storage hosts.

- For offline storage hosts after running `SHOW HOSTS`, troubleshooting is needed.

!!! compatibility "Legacy version compatibility"

For Nebula Graph v2.x before v2.5.0, `vid_type` is optional and defaults to `FIXED_STRING(8)`.
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