Faulty Discover, Shard Loading Problem In Kibana 7.6

[Ethan777100 (Ethan Chia)]

Just 2 hours ago, I could sucessfully pull out all my data for that same time range. Now i can't, it gives me Shard failure and idk whats happening.

The distinguishing point is that Discover only started to behave like this after i introduced my own Scripted Field (valid one), into the picture.

The Discover function is very buggy and needs to be looked into!

[matw (Matthias Wilhelm)]

Hi
could you share what is displayed when you click on Show details ? might be the case that there's a case when your scripted field is failing, could you share the field's source?

Many thx & Best,
Matthias

[Ethan777100 (Ethan Chia)]

Cant click on Show Details, nothing pops up...so i met a dead end to finding out root causes.

Anyway i deleted my scripted field alr. which solves the problem. Now my colleagues advised me to never use scripted field again.

How about u try preparing a scripted field on your end? Mine actually worked, it produced the legit result i wanted. It was just a simple addition of +5 to one of my existing cols.

But once u go into Discover, this happens.

However, in Kibana 7.7.1 i dont see this issue occuring. I have 1 scripted field over there tooo.

[matw (Matthias Wilhelm)]

Hi

Sorry to hear, anyway generally scripted fields work, but they might fail when e.g. an expected property of a doc is missing. Could you share you scripted field's code? then I could help detecting the cause for the problem.

Thx a lot! Best,
Matthias

[Ethan777100 (Ethan Chia)]

doc['Length'].value + 5

anw idk why...my results all rounded to nearest whole number. My 'Length" was in 3dp btw.

[matw (Matthias Wilhelm)]

Hi
Let's first fix the script problem. Might be the case that there are docs without 'Length' causing a shard error. So to be safe you should code it like this:

if(doc.containsKey('Length')) {
 return doc['Length'].value + 5;
else {
  return 0;

}

If there's still an error and Show details doesn't work you could have a look in the Browsers console or network tab of the Developer tools, there should be more info about this.

Best,
Matthias