v20.1.4596

• Optimized to handle frequently requested files fast and easy (data-nodes may need additional setup, please check data-node readme file)
• Stability Improvement for Deletion
• Zombie Notification is added to fs-tool directory list (↯)
• Added Zombie killer option to "rm" command in filesystem tool (run kertish-fs rm -k filename.ext)
• Descriptive lock message added at end of filenames in fs-tool directory list Ex: filename.txt (locked till 2006 Jan 02 03:04 )
• Metadata check/fix specification is added. (run kertish-admin with -check-consistency flag)
• Breaking Change! (for custom implementations) Header keys are changed, please check README files
• File lock mechanism is improved
• Limit Create and Delete sync loop to avoid infinite retry (manager-node will not try to sync data-nodes for the specific file after some times of failures. HealthCheck will handle sync at a later time.)
• Sync improvement between data-nodes
• Improved node prioritizing
• Breaking Change! Changed Reservation handling. (Please update array type cluster reservations fields in MongoDB to object type) Just copy paste the following code and run on MongoDB database of Kertish-DFS.

db.cluster.find({}).forEach( function (x) {   
  var reservations = new Object();
  x.reservations.forEach(function (r) {
      Object.keys(r).forEach(function(key) {
          reservations[key] = r[key];
      });
  });
  x.reservations = reservations;
  db.cluster.save(x);
});

• Breaking Change! Replaced Redis based mutex mechanism with Locking-Center on manager-node and head-node (Please check README files.)
• Squeezed many bugs...