Signing errors can lead to increased CPU usage

[rickyes]

I found that parsing the wrong zip resulted in increased CPU usage, and I found a problem after debug：

Parse.prototype._flush = function (callback) {
  if (!this._streamEnd || !this._streamFinish) {
    return setImmediate(this._flush.bind(this, callback));
  }

  this.emit('close');
  return callback();
};

Here _streamEnd and _streamFinish variables has been meet the conditions, so constantly registered setImmediate to the event loop

[bakso]

+1

[liangzhuang327]

use unzip.Extract, Cpu soars from 4% to 50% and does not recover.