apache/shenyu · error · ShenyuAdminException

The namespace(s) does not exist！

Error message

The namespace(s) does not exist！

What it means

Thrown by NamespaceServiceImpl.delete when none of the supplied ids resolve to existing namespace rows: namespaceMapper.selectByIds returns empty, so the derived namespaceId list is empty and SYS_NAMESPACE_ID_NOT_EXIST is raised. It signals the delete batch refers entirely to non-existent namespaces.

Solutions

1. Verify the ids are row primary keys from GET /namespace, not business namespaceId values
2. Re-fetch the namespace list and delete only ids that still exist
3. Make batch deletion tolerant: check existence first and skip missing ids
4. Refresh UI state and retry with valid ids

Example fix

// before
namespaceService.delete(ids);
// after
List<NamespaceDTO> existing = namespaceService.findAll().stream()
    .filter(n -> ids.contains(n.getId()))
    .collect(Collectors.toList());
if (!existing.isEmpty()) {
    namespaceService.delete(existing.stream().map(NamespaceDTO::getId).collect(Collectors.toList()));
}

List<NamespaceDO> existing = namespaceMapper.selectByIds(ids);
if (existing.isEmpty()) {
    throw new IllegalArgumentException("none of the namespace ids exist");
}

try {
    namespaceService.delete(ids);
} catch (ShenyuAdminException e) {
    if (AdminConstants.SYS_NAMESPACE_ID_NOT_EXIST.equals(e.getMessage())) {
        LOG.warn("namespaces already gone, nothing to delete");
    } else {
        throw e;
    }
}

When it happens

Trigger: Calling DELETE /namespace with ids that were already deleted, fabricated ids, or primary-key values confused with namespaceId strings (the mapper selects by primary key id, not by the business namespaceId field).

Common situations: Passing business namespaceId (e.g. a UUID string) instead of the row primary key; retrying a delete after it already succeeded; stale dashboard state after concurrent deletion by another admin.

Understand the failure class

Background: Record Not Found Errors: "not found", RecordNotFound, and "was not found" — what they mean and how to fix them — this error's family across 28 libraries.

Related errors

• shenyu this discovery is not found in current namespace
• The default namespace cannot delete！
• rule exist under those namespace!
• selector exist under those namespace!
• Plugins exist under those namespace!

AI-assisted analysis of apache/shenyu@567142e072 (2026-09-12). Data as JSON: /api/errors/d112b3803341a64b. Report an issue: GitHub.

Appendix: source

Thrown at shenyu-admin/src/main/java/org/apache/shenyu/admin/service/impl/NamespaceServiceImpl.java:141

        }
        if (CollectionUtils.isEmpty(namespaceIds)) {
            return new CommonPager<>();
        }
        namespaceQuery.setNamespaceIds(namespaceIds);
        return PageResultUtils.result(namespaceQuery.getPageParameter(), () -> namespaceMapper.countByQuery(namespaceQuery), () -> namespaceMapper.selectByQuery(namespaceQuery)
                .stream()
                .map(NamespaceTransfer.INSTANCE::mapToVo)
                .collect(Collectors.toList()));
    }

    @Override
    public String delete(final List<String> ids) {
        if (ids.contains(Constants.DEFAULT_NAMESPACE_PRIMARY_KEY)) {
            throw new ShenyuAdminException(AdminConstants.SYS_DEFAULT_NAMESPACE_ID_DELETE);
        }
        List<String> namespaceIdList = namespaceMapper.selectByIds(ids).stream().map(NamespaceDO::getNamespaceId).collect(Collectors.toList());
        if (CollectionUtils.isEmpty(namespaceIdList)) {
            throw new ShenyuAdminException(AdminConstants.SYS_NAMESPACE_ID_NOT_EXIST);
        }
        List<RuleDO> ruleDOList = ruleMapper.selectAllByNamespaceIds(namespaceIdList);
        if (CollectionUtils.isNotEmpty(ruleDOList)) {
            throw new ShenyuAdminException("rule exist under those namespace!");
        }
        List<SelectorDO> selectorDOS = selectorMapper.selectAllByNamespaceIds(namespaceIdList);
        if (CollectionUtils.isNotEmpty(selectorDOS)) {
            throw new ShenyuAdminException("selector exist under those namespace!");
        }
        List<NamespacePluginVO> namespacePluginVOS = namespacePluginRelMapper.selectAllByNamespaceIds(namespaceIdList);
        if (CollectionUtils.isNotEmpty(namespacePluginVOS)) {
            throw new ShenyuAdminException("Plugins exist under those namespace!");
        }
        List<MetaDataDO> metaDataDOList = metaDataMapper.findAllByNamespaceIds(namespaceIdList);
        if (CollectionUtils.isNotEmpty(metaDataDOList)) {
            throw new ShenyuAdminException("metaData exist under those namespace!");
        }
        List<AppAuthDO> appPathDOList = appAuthMapper.findByNamespaceIds(namespaceIdList);

View on GitHub (pinned to 567142e072)