Github user shawnfeldman commented on a diff in the pull request: https://github.com/apache/incubator-usergrid/pull/256#discussion_r31176980 --- Diff: stack/core/src/main/java/org/apache/usergrid/corepersistence/asyncevents/EventBuilderImpl.java --- @@ -125,12 +128,30 @@ public EntityDeleteResults queueEntityDelete( final ApplicationScope application final GraphManager gm = graphManagerFactory.createEdgeManager( applicationScope ); + //needs get versions here. + + + //TODO: change this to be an observable + //so we get these versions and loop through them until we find the MvccLogEntry that is marked as delete. + //TODO: evauluate this to possibly be an observable to pass to the nextmethod. + MvccLogEntry mostRecentlyMarked = ecm.getVersions( entityId ).toBlocking() + .firstOrDefault( null, + mvccLogEntry -> mvccLogEntry.getState() == MvccLogEntry.State.DELETED ); + + //If there is nothing marked then we shouldn't return any results. + //TODO: evaluate if we want to return null or return empty observable when we don't have any results marked as deleted. + if(mostRecentlyMarked == null) + return null; //observable of index operation messages + //this method will need the most recent version. + //When we go to compact the graph make sure you turn on the debugging mode for the deleted nodes so + //we can verify that we mark them. That said that part seems kinda done. as we also delete the mvcc buffers. final Observable<IndexOperationMessage> edgeObservable = --- End diff -- probably needs to be flatmap
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