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Re: LMDB : mdb_drop is slow

Venkat Murty wrote:

I have a lmdb environment in linux with 4K (MDB_dbi) databases. The size
of the whole lmdb file is around 500G.

foreach (MDB_dbi db in databases)
{
    mdb_drop (txn, db, 0);
}

This process takes more that 10 hours. Is it reasonable ?
Probably not a reasonable thing to do. Just delete the DB file and recreate it. mdb_drop() is only slightly faster than mdb_delete'ing each record. 

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