cfr sys-import: `Importing table failed: XXX. Reason: Type is not JSON serializable: numpy.ndarray`

[amotl]

Problem

Following up on GH-481, we observed those error messages when invoking ctk cfr sys-import.

ctk cfr sys-import /path/to/cfr/crate/2025-07-09T02-41-44/sys

Details

2025-07-09 02:42:50,129 [cratedb_toolkit.cfr.systable        ] INFO    : Importing system tables from: /Users/amo/dev/crate/ecosystem/cratedb-retentions/cfr/crate/2025-07-09T02-41-44/sys
2025-07-09 02:42:50,443 [cratedb_toolkit.util.cli            ] ERROR   : Importing table failed: users. Reason: Type is not JSON serializable: numpy.ndarray
2025-07-09 02:42:50,512 [cratedb_toolkit.util.cli            ] ERROR   : Importing table failed: cluster. Reason: Type is not JSON serializable: numpy.ndarray
2025-07-09 02:42:50,557 [cratedb_toolkit.util.cli            ] ERROR   : Importing table failed: nodes. Reason: Type is not JSON serializable: numpy.ndarray
2025-07-09 02:42:50,589 [cratedb_toolkit.util.cli            ] ERROR   : Importing table failed: shards. Reason: Type is not JSON serializable: numpy.ndarray
2025-07-09 02:42:50,725 [cratedb_toolkit.util.cli            ] ERROR   : Importing table failed: jobs_log. Reason: Type is not JSON serializable: numpy.ndarray
2025-07-09 02:42:50,742 [cratedb_toolkit.util.cli            ] ERROR   : Importing table failed: jobs_metrics. Reason: Type is not JSON serializable: numpy.ndarray
2025-07-09 02:42:50,812 [cratedb_toolkit.cfr.systable        ] INFO    : Successfully imported 15 system tables

[amotl]

• Fixed: CFR: Assorted fixes and improvements #483

[amotl]

Fixed with v0.0.38?

/cc @karynzv