ES 2.4.0; using mapper-attachments plugin to index pdfs.
Suddenly after index, I see the shards size from primary and replica are different. See attached. The cluster is in green status, I didn't notice exceptions that might affect this.
The same logic I used before: I set replica as 0; after indexing, set replica to 1;
document count is the same; the store has big difference. e.g for shard 3, primary is 11.6gb, but for replica it is only 6.6gb. Is this expected?