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Keep previous query result if current query result in error #8863

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2 changes: 2 additions & 0 deletions changelogs/fragments/8863.yml
Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
fix:
- Keep previous query result if current query result in error ([#8863](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/8863))
Original file line number Diff line number Diff line change
Expand Up @@ -84,8 +84,13 @@ export default function DiscoverCanvas({ setHeaderActionMenu, history, optionalR
if (next.bucketInterval && next.bucketInterval !== fetchState.bucketInterval)
shouldUpdateState = true;
if (next.chartData && next.chartData !== fetchState.chartData) shouldUpdateState = true;
// we still want to show rows from the previous query while current query is loading
if (next.status !== ResultStatus.LOADING && next.rows && next.rows !== fetchState.rows) {
// we still want to show rows from the previous query while current query is loading or the current query results in error
if (
next.status !== ResultStatus.LOADING &&
next.status !== ResultStatus.ERROR &&
next.rows &&
next.rows !== fetchState.rows
) {
shouldUpdateState = true;
setRows(next.rows);
}
Expand Down Expand Up @@ -152,20 +157,16 @@ export default function DiscoverCanvas({ setHeaderActionMenu, history, optionalR
timeFieldName={timeField}
/>
)}
{fetchState.status === ResultStatus.ERROR && (
<DiscoverNoResults
queryString={data.query.queryString}
query={data.query.queryString.getQuery()}
savedQuery={data.query.savedQueries}
timeFieldName={timeField}
/>
)}
{fetchState.status === ResultStatus.UNINITIALIZED && (
<DiscoverUninitialized onRefresh={() => refetch$.next()} />
)}
{fetchState.status === ResultStatus.LOADING && !rows?.length && <LoadingSpinner />}
{fetchState.status === ResultStatus.ERROR && !rows?.length && (
<DiscoverUninitialized onRefresh={() => refetch$.next()} />
)}
{(fetchState.status === ResultStatus.READY ||
(fetchState.status === ResultStatus.LOADING && !!rows?.length)) &&
(fetchState.status === ResultStatus.LOADING && !!rows?.length) ||
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@kavilla kavilla Nov 14, 2024

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nit: imo this is getting really hard to understand when and where and i can imagine a regression if someone slightly changes the logic here.

i think we should consider a restructuring of this code.

to me this would be the psuedo code lemme know if im wrong

if rows.length exists, show results based on status
   switch fetchState.status
      READY, LOADING, ERROR
         isEnhancements return either component A or component B
      default
        nothing
else if no rows, handle different status states
   switch fetchState.status
      case: NO_RESULTS
        return no results component
      case: UNITIALIZED, ERROR
        return uniitilizaed component
      case: LOADING
        return loading spinner
      default:
        nothing

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@abbyhu2000 abbyhu2000 Nov 14, 2024

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i think the above psudo logics are not the same as the current logics

Rows exist or not exist only make a difference for loading status and error status;
ready status and un-initialized and no result status do not care about rows exist or not

(fetchState.status === ResultStatus.ERROR && !!rows?.length)) &&
(isEnhancementsEnabled ? (
<>
<MemoizedDiscoverChartContainer {...fetchState} />
Expand Down
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