[FEATURE]: Storing values larger than 2 GB

[mitar]

Have you tried Badger before this proposal? and did not find anything similar?

None

What you wanted to do.

I wanted to set ValueLogFileSize to 6 GB.

What you actually did.

Called opts.WithValueLogFileSize(6 * 1024 * 1024 * 1024).

Why wasn't it great, with examples.

I got error Invalid ValueLogFileSize, must be in range [1MB, 2GB).

Additional information.

Could this limit be lifted on 64bit systems? It seems to me that this is just to support mmap on 32 bit systems and there is really no design limitation why not to support larger values? On my system, I have:

$ grep -m1 "address sizes" /proc/cpuinfo 
address sizes	: 39 bits physical, 48 bits virtual

So a bit less than 2^47 (128 TiB) could be the max limit for mmap on my system.

[simon28082]

I have the same problem, 2G is too little for me, we need more than 8G

[nathanhack]

Same here