Increase max open files parameters in rocksdb up to 10K

[EdvardD]

Increase the default max_open_files from 512 up to 10k;
Set ulimit for the number of files from neard to 11025.

[mina86]

You need to also update recompress_storage command so that it sets the limit to ‘2*max_open_files + 1000’ or something along those lines.

I should have noticed this in previous PR, but max_open_files should probably be u32 rather than i32.

[EdvardD]

You need to also update recompress_storage command so that it sets the limit to ‘2*max_open_files + 1000’ or something along those lines.

I should have noticed this in previous PR, but max_open_files should probably be u32 rather than i32.

This doesn't prevent recompress_storage from setting their own 3 * 512 limit.

[EdvardD]

[EdvardD]

I should have noticed this in previous PR, but max_open_files should probably be u32 rather than i32.
It was u32 until I noticed that rocksdb has it as i32 so I made it i32 to be consistent. It doesn't seem to be a blocker for this change.

[mina86]

OK, #6612 is now in so this is just a matter of minor stylistic changes.