[jira] [Created] (NIFI-16352) UI - Disable Component State single-entry clear when the listing is partial

["Rob Fellows (Jira)" <ji...@apache.org>]

Rob Fellows created NIFI-16352:
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             Summary: UI - Disable Component State single-entry clear when the listing is partial
                 Key: NIFI-16352
                 URL: https://issues.apache.org/jira/browse/NIFI-16352
             Project: Apache NiFi
          Issue Type: Bug
          Components: Core UI
            Reporter: Rob Fellows
            Assignee: Rob Fellows


h2. Problem

When GET /state is truncated (totalEntryCount greater than the returned entries; cap is 5000 via SortedStateUtils.MAX_COMPONENT_STATE_ENTRIES), the Component State dialog already sets partialResults and shows “Showing partial results.” Per-entry delete is still offered.

Clear-entry does not send “delete this key.” The UI POSTs the *visible remainder* of the map. The server requires that payload to be the *full live map minus exactly one key* (StandardComponentStateDAO.hasExactlyOneKeyRemoved). A partial listing fails that check with:

Unable to remove a state key for component … Exactly one key removal is supported.

Reproduced on DebugFlow with Generate State Entries above the GET cap (e.g. clearing debug_state_key_00000).
h2. Fix

When partialResults is true:
 * Do not offer per-entry delete (hide or disable the actions column)

 * Do not dispatch clearComponentStateEntry

 * Keep *Clear state* for the whole map

 * Optional tooltip/copy explaining why single-entry clear is unavailable on a partial listing

h2. Out of scope
 * Changing the clear-entry API

 * Raising the 5000-entry GET cap



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