kestra-io/kestra · error · IllegalArgumentException

Reindexing type '{}' is not supported

Error message

Reindexing type '{}' is not supported

What it means

Thrown by 'kestra sys reindex' when the type argument is not 'flow'. The command only supports reindexing flows; any other type value falls through to an IllegalArgumentException naming the unsupported type. This is a usage/contract error, not a transient failure.

Source

Thrown at cli/src/main/java/io/kestra/cli/commands/sys/ReindexCommand.java:48

    private String type;

    @Override
    public Integer call() throws Exception {
        super.call();

        if ("flow".equals(type)) {
            FlowRepositoryInterface flowRepository = applicationContext.getBean(FlowRepositoryInterface.class);
            FlowService flowService = applicationContext.getBean(FlowService.class);

            List<Flow> allFlow = flowRepository.findAllForAllTenants();
            allFlow.stream()
                .map(flow -> flowRepository.findByIdWithSource(flow.getTenantId(), flow.getNamespace(), flow.getId()).orElse(null))
                .filter(Objects::nonNull)
                .forEach(throwConsumer(flow -> flowService.update(GenericFlow.of(flow), flow)));

            stdOut("Successfully reindex " + allFlow.size() + " flow(s).");
        } else {
            throw new IllegalArgumentException("Reindexing type '" + type + "' is not supported");
        }

        return 0;
    }
}

View on GitHub (pinned to 823fada927)

Solutions

1. Use exactly 'flow' as the type: kestra sys reindex flow.
2. Check 'kestra sys reindex --help' for the list of supported types.
3. For reindexing other entities (executions, logs), use the dedicated admin/API tooling rather than this command.

Example fix

# before
kestra sys reindex flows
# after
kestra sys reindex flow

if (!"flow".equals(type)) {
  throw new IllegalArgumentException('Unsupported reindex type: ' + type + ". Supported: flow");
}

When it happens

Trigger: User runs 'kestra sys reindex <type>' where type != "flow" (case-sensitive); the else branch throws IllegalArgumentException("Reindexing type '<type>' is not supported").

Common situations: Typo in the type (e.g. 'flows' plural, 'executions', 'logs'), wrong casing ('Flow'), or attempting to reindex an entity type that has no CLI reindex path.

Related errors

• Invalid key pair value for inputs
• Too many flow found, need 1, found {}
• Missing required options '--plugins' or environment variable
• Missing required options '--plugins' or environment variable
• Invalid flow path

AI-assisted analysis of kestra-io/kestra@823fada927 (2026-08-14). Data as JSON: /api/errors/a29d49288c1c88d7. Report an issue: GitHub.