## Overview
Sometimes in operations it is helpful to re-establish connection between
erlang nodes. Usually it is achieved by calling `net_adm:ping/1`. However
the `ping` function provided by OTP uses `infinity` timeout. Which causes
indefinite hang in some cases. This PR adds convinience function to be
used instead of `net_adm:ping/1`.
## Testing recommendations
1. Start dev cluster using `dev/run --admin=adm:pass`
2. Go to remsh `dev/remsh`
3. Call `mem3:ping('[email protected]').` you should see `pong`.
3. Call `mem3:ping('[email protected]').` you should see `pang`.
4. Try variant with specified timeout
- `mem3:ping('[email protected]', 100).` you should see `pong`.
- `mem3:ping('[email protected]', 100).` you should see `pang`.
## Related Issues or Pull Requests
N/A
## Checklist
- [x] Code is written and works correctly;
- [ ] Changes are covered by tests;
- [ ] Documentation reflects the changes;
[ Full content available at: https://github.com/apache/couchdb/pull/1590 ]
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