Speedup collection of results from ingesters in the querier#4100
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electron0zero merged 12 commits intografana:mainfrom Sep 25, 2024
Merged
Speedup collection of results from ingesters in the querier#4100electron0zero merged 12 commits intografana:mainfrom
electron0zero merged 12 commits intografana:mainfrom
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What this PR does:
Earlier we used to make calls to ingesters, get results and itarate over these results to collect them and then return them to query-frontend.
Iterating and then collecting the results was sync and a bottleneck and showed up in traces and profiles.
This PR pushed down the collection of results and that makes it a parallel and removes the iteration step.
now we query an ingester and collect the results where we query, and once all ingesters response, we read the collected results and return them to query-frontend for further combining.
see this trace for example:
along with these changes, It also does the following:
interface{}return types fromforIngesterRingsand callback functionforEachFnWhich issue(s) this PR fixes:
Fixes #
Checklist
CHANGELOG.mdupdated - the order of entries should be[CHANGE],[FEATURE],[ENHANCEMENT],[BUGFIX]