Github user sardell commented on a diff in the pull request:

    https://github.com/apache/metron/pull/1010#discussion_r189261776
  
    --- Diff: 
metron-interface/metron-alerts/src/app/alerts/alerts-list/table-view/table-view.component.ts
 ---
    @@ -77,12 +80,24 @@ export class TableViewComponent implements OnChanges {
                   searchService: SearchService,
                   metronDialogBox: MetronDialogBox,
                   updateService: UpdateService,
    -              metaAlertService: MetaAlertService) {
    +              metaAlertService: MetaAlertService,
    +              globalConfigService: GlobalConfigService) {
         this.router = router;
         this.searchService = searchService;
         this.metronDialogBox = metronDialogBox;
         this.updateService = updateService;
         this.metaAlertService = metaAlertService;
    +    this.globalConfigService = globalConfigService;
    +  }
    +
    +  ngOnInit() {
    +    this.globalConfigService.get().subscribe((config: {}) => {
    +      this.globalConfig = config;
    +      if (this.globalConfig['source.type.field'] === 'source.type' && 
!this.alertsColumnsToDisplay['source.type']) {
    --- End diff --
    
    @merrimanr Good point. What if we check if a config property of 
['source.type.field'] exists and change it to whatever value it has. If no 
config exists, default to `source:type` (to catch existing users without a 
config property set)?
    
    ```
    if (this.globalConfig['source.type.field']) {
            this.alertsColumnsToDisplay.splice(2, 0, new 
ColumnMetadata(config['source.type.field'], 'string'));
          } 
    else {
            this.alertsColumnsToDisplay.splice(2, 0, new 
ColumnMetadata(config['source:type'], 'string'));
          }
    ```


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