For collection with hashed keys as shard key, the record counts in chunks are varied, some may contains millions of records, other may contains a few thousands.
This would lead to OOM exception during snapshot phrase if a chunk contains millions of records.
This feature use SampleBucketSplitStrategy instead of ShardedSplitStrategy to avoid this OOM situation.
vanliu-tx
commented
1 year ago
For collection with hashed keys as shard key, the record counts in chunks are varied, some may contains millions of records, other may contains a few thousands.
This would lead to OOM exception during snapshot phrase if a chunk contains millions of records.
This feature use SampleBucketSplitStrategy instead of ShardedSplitStrategy to avoid this OOM situation.