Filter and output threads arent named correctly

[ph]

Naming thread will help us debug problematic plugins.

4210 cashmol  20  0  9.804g 1.017g  15816 S 34.2 13.3  0:51.41 |worker

4209 cashmol  20  0  9.804g 1.017g  15816 S 32.2 13.3  0:50.56 |worker

4211 cashmol  20  0  9.804g 1.017g  15816 R 31.6 13.3  0:49.91 |worker

4212 cashmol  20  0  9.804g 1.017g  15816 S 30.9 13.3  0:49.18 |worker

i know they are filters.. but nobody knows which one

or 

4247 cashmol  20  0  9.804g 1.017g  15816 S  3.3 13.3  0:06.46 >output

4318 cashmol  20  0  9.804g 1.017g  15816 S  3.3 13.3  0:05.38 >output

4264 cashmol  20  0  9.804g 1.017g  15816 S  2.7 13.3  0:01.67 >output

https://github.com/elasticsearch/logstash/blob/master/lib/logstash/pipeline.rb#L196

[ph]

cc @electrical

[purbon]

Agreed, this should be fix, it will simplify the debugging.

[ph]

After discussing with @talevy this isn't an easy fix to do for 1.5, we need to refactor the pipeline to do it in a clean way. Because one output thread consist of multiple plugins and some plugins can run in their own thread if workers > 1

But we both agreed that we need to give more visibility to user about what logstash is doing.

[ph]

@jsvd this ticket should be included in the pipeline discussion.

[jsvd]

noted 👍

[untergeek]

This is moot now with the next generation pipeline, where filters and outputs are merged.