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Emphasize in docs that in clustering environments, when using incremental import the updated database must be reseeded (#2093) #2109

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Feb 11, 2025
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Emphasize in docs that in clustering environments, when using incremental import the updated database must be reseeded (#2093) #2109

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19 changes: 12 additions & 7 deletions modules/ROOT/pages/tools/neo4j-admin/neo4j-admin-import.adoc
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Original file line number Diff line number Diff line change
Expand Up @@ -595,7 +595,7 @@ The syntax for importing a set of CSV files incrementally is:

[source, syntax, role="nocopy"]
----
neo4j-admin database import incremental [-h] [--expand-commands] --force [--update-all-matching-relationships]
neo4j-admin database import incremental [-h] [--expand-commands] --force [--update-all-matching-relationships]
[--verbose] [--auto-skip-subsequent-headers[=true|false]]
[--ignore-empty-strings[=true|false]] [--ignore-extra-columns[=true|false]]
[--legacy-style-quoting[=true|false]] [--normalize-types[=true|false]]
Expand All @@ -619,6 +619,17 @@ Incremental import into an existing database.

=== Usage and limitations

[WARNING]
====
The importer works well on standalone servers.

In clustering environments with multiple copies of the database, the updated database must be used as a source to reseed the rest of the database copies.
You can use the procedure xref:procedures.adoc#procedure_dbms_cluster_recreateDatabase[`dbms.cluster.recreateDatabase()`].
For details, see xref:clustering/databases.adoc#recreate-databases[Recreate databases].

Starting the clustered database after an incremental import without reseeding or performing the incremental import on a single server while the database remains online on other clustered members may result in unpredictable consequences, including data inconsistency between cluster members.
====

The incremental import command can be used to add:

* New nodes with labels and properties.
Expand All @@ -638,12 +649,6 @@ The incremental import command cannot be used to:
* Update or delete labels in nodes.
* Delete existing nodes and relationships.

[NOTE]
====
The importer works well on standalone servers.
In clustering environments with multiple copies of the database, the updated database must be reseeded.
====

=== Parameters

.`neo4j-admin database import incremental` parameters
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