how to update existing build?

[elbriandominguez]

Hello,

I was wondering if there is a way to update an existing build? I've attempted this myself, but I have a feeling I would need to build from scratch based on this message running the following command:

(base) [bdoming1@vetsci-240 ~]$ kraken2-build --build --db /datastore/databases/kraken2_db/ --threads 24
Creating sequence ID to taxonomy ID map (step 1)...
Sequence ID to taxonomy ID map already present, skipping map creation.
Estimating required capacity (step 2)...
Estimated hash table requirement: 2294987336 bytes
Capacity estimation complete. [13.959s]
Building database files (step 3)...
Hash table already present, skipping database file build.
Database construction complete. [Total: 13.970s]

[ChillarAnand]

Did you try deleting "seqid2taxid.map" and re-running? @elbriandominguez

[ChillarAnand]

This is good to have feature with more documentation.

Since building a db takes a few days even with a good cluster, it should be easy to add new genomes on top of existing db.

[elbriandominguez]

@ChillarAnand yes it would be nice to have this feature otherwise I am stuck keeping the libraries each time I want to update.