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BugZero found this defect 58 days ago.
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MongoDB | 2620271
shardedDataDistribution aggregation stage returns null fields for timeseries
Last update date:
3/22/2024
Affected products:
MongoDB Server
Affected releases:
7.0.0
7.3.0
Fixed releases:
No fixed releases provided.
Description:
Info
The $shardedDataDistribution aggregation stage is supposed to return 4 fields : numOrphanedDocs, numOwnedDocuments, ownedSizeBytes and orphanedSizeBytes. When the stage is invoked on a bucket collection, it correctly reports the numOrphanedDocs but outputs null for all other fields. The bug arises because $shardedDataDistribution relies on the output of the $collStats aggregation stage that outputs a different set of fields for timeseries collections. Those are the ways we currently compute the number of owned docs, owned size and orphaned size in the $shardedDataDistribution stage relying on storageStats.count and storageStats.avgObjSize. Purpose of this ticket is to change the stage to compute such metrics based on timeseries.bucketCount and timeseries.avgBucketSize when invoked on a bucket collection.
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