How to get the cleaner thread to run

Hi,
I googled documentation/ previous posts, but the topic about getting the log files cleaned is still unclear to me.
I have created around 24000 records and then deleted all of them ( ie., there is'nt even a single active record in the database). However, the folder size (around 35MB) just wont go down. Google pointed out that this should be taken care of by cleaner thread.
I have'nt written any code/properties specific to cleaner thread, nor any other properties to do with diskspace etc. So I assume everything is default.
Would this be run automatically ( assuming even a single record is'nt actually active) or do I need to do something to actually reclaim the diskspace?
There is limited disk space on this folder for me and I expected the delete to actually delete and make the disk space available immediately (or soon after).
Any help is greatly appreciated.
Thanks.

Cleaning and checkpointing occur in background, asynchronously, and are driven by writes to the log.
In your test, you insert a bunch of records, then delete them all, then stop. Who knows whether log cleaning and a checkpoint happened to occur after you did the deletions. Probably not. You need to keep the app running and writing data.
Please do this test: Alternate insertions, then deletions, then insertions, then deletions, etc. Keep this running. You'll see the cleaner deleting the old files.
--mark

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