When client becomes the "leader" no operations execute against the database

[doowb]

I'm not sure where to start debugging this except by creating a long running process that does this:

• 1. connect to database
• 2. get item
• 3. write item to console
• 4. sleep
• 5. goto 2

When running the process along, it will read one item then quit after it sleeps (when it attempts to read an item again)

If I add a second setTimeout and just loops and does nothing to keep the process alone, it's the only one that does anything (after the first read).

When I start 2 processes with the same script, the second one to start will read the item in the loop as expected. If I kill the first process (the "leader"), the second process becomes the "leader" and stops reading from the database.

I'm not sure if this is because the "leader" is a client and server and there's an error that's not propagating or if there's some other cause to this.

Update

I did some more tests and it seems to only happen when using accountdown and using the .list() method (which returns a stream).

Here's the script that I was using. I have the timeouts set high in this case so I can switch to another console and start it again. After the "leader" dies, and another "leader" is elected, it stops reading, then dies.

var mkdirp = require('mkdirp');
var level = require('level-party');
var sublevel = require('level-sublevel');
var accountdown = require('accountdown');

mkdirp.sync('./tmp/data');
var db = level('./tmp/data')
db.on('leader', console.log.bind(console, "I'm the leader"));
// db = sublevel(db);
var accounts = accountdown(db, {
  login: { basic: require('accountdown-basic') }
});

var start = new Date();

function writeMsg () {
  var opts = {
    login: {basic: {username: 'doowb', password: 'password'}},
    value: {name: 'Brian Woodward'}
  };
  accounts.create('doowb', opts, function (err) {
    setTimeout(writeMsg, 10000);
  });
  // var diff = (new Date()) - start;
  // db.put('time', diff.toString(), function (err) {
  //   if (err) console.error('Error writing diff', err);
  //   setTimeout(writeMsg, 1000);
  // });
}

function readMsg () {
  accounts.list()
    .on('data', console.log)
    .on('end', function () {
      setTimeout(readMsg, 2000);
    });
  // db.get('time', function (err, diff) {
  //   if (err && err.notFound) console.error('Message not found', err);
  //   if (err && !err.notFound) console.error('Error', err);
  //   console.log('Diff:', diff);
  //   setTimeout(readMsg, 200);
  // });
}

writeMsg();
setTimeout(readMsg, 5000);

[vweevers]

I did some more tests and it seems to only happen when using accountdown

Merging into #12.