why nifi content repository doesn't cleanup it's own

[#1]

We have disbaled the archive and there no flowfiles older than 1 day in queque. While restart of nifi instance is helping in clearing the space, why it doesn't clear by itself. Is there any setting, which can enforce the cleanup???

nifi-1.8, hdf-3.3.1

[#2]

@MattWho

[#3]

@NY 

There are several bugs related content repository failing to clean-up under specific conditions.

Based on your description and version of HDF, the most likely bugs are the following:
https://issues.apache.org/jira/browse/NIFI-6846
https://issues.apache.org/jira/browse/NIFI-5771

Both of the above would result in cleanup occurring only on NiFi Restart once the condition occurs.

If you are using the VolatileFlowFileRepository implementation which is uncommon, you may be hitting:

https://issues.apache.org/jira/browse/NIFI-6236

While you are not hitting below jira because it was only introduced in Apache NIFi 1.9.1 (HDF3.4.0 - removed) and fixed in HDF 3.4.1, sharing for completeness here:
https://issues.apache.org/jira/browse/NIFI-6150

All the above are addressed, except NIFI-6846 are addressed in HDF 3.4.1 (Apache NiFi 1.9.2).
All above are fixed in HDF 3.5.1 (Apache NiFi 1.11.4).
I recommend upgrading to HDF 3.5.x (latest)

Hope this helps,

Matt