private <T> T deserializeObject(JavaTableConfig tableConfig, String key) {
    String entry = tableConfig.getForTable(tableId, key, "");
    if (entry.isEmpty()) {
      return null;
    }
    return SerdeUtils.deserialize(key, entry);
  }
Map of tableId -> executor service for async table IO and callbacks. The same executors
are shared by both read/write operations such that tables of the same tableId all share
the set same of executors globally whereas table itself is per-task.
samza-core/src/main/java/org/apache/samza/table/remote/RemoteTableProvider.java