[SAMZA-94] State management kv-store delete() does not remove key

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.6.0
• Fix Version/s: 0.7.0
• Component/s: kv
• Assignee: Chris Riccomini
• Reporter: Alan Li
• Created: 02/Dec/13 19:10
• Updated: 09/Dec/13 20:22
• Resolved: 09/Dec/13 20:22

Description

Sample code snippet:

    _realtimeStateStore.put("foo", new HashMap());
    
    KeyValueIterator<String, Map<String, State>> realtimeIterator = _realtimeStateStore.all();
    while (realtimeIterator.hasNext())
    {
      Entry<String, Map<String, State>> entry = realtimeIterator.next();
      System.out.println("read from leveldb: " + entry.getKey() + "=>" + entry.getValue());
    }
    realtimeIterator.close();
    
    _realtimeStateStore.delete("foo");
    
    KeyValueIterator<String, Map<String, State>> iter = _realtimeStateStore.all();
    while (iter.hasNext())
    {
      Entry<String, Map<String, State>> entry = iter.next();
      System.out.println("read from leveldb: " + entry.getKey() + "=>" + entry.getValue());
    }
    iter.close();

Output:
read from leveldb: foo=>{}
read from leveldb: foo=>null

I would expect that the kv would remove both the key & value on delete so that subsequent iterators will not return keys that have been deleted.