Merge two LMDB databases for feeding to the network (caffe)

问题

Here are two LMDB databases. Is there any way to merge these two databases and feed it to network using caffe?

回答1:

Simply write a script using the python lmdb interface. Something like:

import lmdb

env = lmdb.open("path/to/lmdbFile")
txn = env.begin(write=True)

database1 = txn.cursor("db1Name")
database2 = txn.cursor("db2Name")

env.open_db(key="newDBName", txn=txn)
newDatabase = txt.cursor("newDBName")

for (key, value) in database1:
    newDatabase.put(key, value)

for (key, value) in database2:
    newDatabase.put(key, value)

or you could just as simply add one to the other by:

for (key, value) in database2:
    database1.put(key, value)

来源：https://stackoverflow.com/questions/33443020/merge-two-lmdb-databases-for-feeding-to-the-network-caffe