Hi, I observed a situation but I don't know is this normal or not.
I use Elasticsearch 1.7.2 and my observation as below.
I set a index with refresh 6s and when I start to add a document to this index, every 6s I see filesystem change, that is a *.cfe,*cfs file were created.
If I keep adding document to index(every 2s), every 6s, file were created.
If this normal?
Is refresh will trigger flush action if there is a change occurred? That measn if there is any pending document in buffer(or translog change), refresh will flush to disk and generate a small segment file?
PS: If I stop to add document to index. There is no file created every 6s.