[2011-02-08 16:16:52,658][DEBUG][action.search.type       ] [Bob] [_river][0], node[84K3Ce_lQH6Xk82G1cj1NA], [P], s[STARTED]: Failed to execute [org.elasticsearch.action.search.SearchRequest@d101f3]
org.elasticsearch.search.SearchParseException: [_river][0]: from[0],size[50]: Parse Failure [Failed to parse source [{"size":50,"from":0,"sort":[{"@timestamp":"desc"}],"facets":{"by_hour":{"histogram":{"time_interval":"1h","field":"@timestamp"}}},"query":{"query_string":{"default_operator":"AND","query":"general"}}}]]
        at org.elasticsearch.search.SearchService.parseSource(SearchService.java:420)
        at org.elasticsearch.search.SearchService.createContext(SearchService.java:335)
        at org.elasticsearch.search.SearchService.executeQueryPhase(SearchService.java:169)
        at org.elasticsearch.search.action.SearchServiceTransportAction.sendExecuteQuery(SearchServiceTransportAction.java:131)
        at org.elasticsearch.action.search.type.TransportSearchQueryThenFetchAction$AsyncAction.sendExecuteFirstPhase(TransportSearchQueryThenFetchAction.java:76)
        at org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction.performFirstPhase(TransportSearchTypeAction.java:193)
        at org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction.access$000(TransportSearchTypeAction.java:77)
        at org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction$1.run(TransportSearchTypeAction.java:152)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
        at java.lang.Thread.run(Thread.java:636)
Caused by: org.elasticsearch.search.SearchParseException: [_river][0]: from[0],size[50]: Parse Failure [No mapping found for [@timestamp]]
        at org.elasticsearch.search.sort.SortParseElement.addSortField(SortParseElement.java:139)
        at org.elasticsearch.search.sort.SortParseElement.addCompoundSortField(SortParseElement.java:96)
        at org.elasticsearch.search.sort.SortParseElement.parse(SortParseElement.java:68)
        at org.elasticsearch.search.SearchService.parseSource(SearchService.java:407)
        ... 10 more