[FEATURE]View Traces / Spans on a timeline graph

[YANG-DB]

Is your feature request related to a problem? I would like to view the traces/spans in a timeline graph based projection to be able to observe trends and spikes

What solution would you like? As part of the diagnostic and investigation process I would like to view the traces / spans overlaid on a timeline to simplify the Observability and spikes appearance

Selection of graph span (categorical) dimension : operation-name / service-name

• The Y-Axis is the duration in milliseconds
• The X-Axis is the bucket of constant time slots, inside each slot are all the parent spans / traces that have completed within this time slot.

Filter the traces using a dimension

Allow to filter the span graphs using a dimension filter

• trace with ERROR filter
• trace dimension filter (equality or condition)

Time-Slot structure

Each slot has a stacked list of spans collections that is organized according to its average duration and their belonging to any of the next percentiles : 50th (median), 75th, 90th, 95th, 99th, and 99.9th.

Each stacked span group height corresponds to the amount of spans in that group (relatively to the whole time-slot)

Fly-Over & Selection

A user can hover on each bar and see the fly-out of the next details

• Average & percentile of that time slot

• latency trend

  

  Open Traces dialog :

• navigate to the traces dialog using the selected time-slot, existing filters

  

  Open discover dialog :

• navigate to the logs discover dialog using the selected time-slot, existing filters and show all logs filtered

• acts as traces to logs correlations functionality

What alternatives have you considered? None

Do you have any additional context?

• https://opensearch.org/docs/latest/observing-your-data/trace/index/

[joshuali925]

This can be useful, a few clarifying questions

The Y-Axis is the duration in milliseconds

• Assuming this is the sum of durations of spans, if there is one span that keeps timing out, would it affect the graph?

Time-Slot structure Within each slot has a stacked list of spans collections that is organized according to its average duration. Each stacked span group height corresponds to the amount of spans in that group (relatively to the whole time-slot)

• What is a span collection?
• What is the amount of spans? number of spans or latency of spans?

Open Traces dialog

• What is the dialog of traces?

[YANG-DB]

The Y-Axis is the duration of parent span (sum duration of child pans)

Q:Assuming this is the sum of durations of spans, if there is one span that keeps timing out, would it affect the graph?

A: Parent spans which have timeout child spans are not included in the calculation

Q:What is a span collection?

Span collection is the list of span (parent spans) that are grouped to calculate the average latency Amount is the number of spans within the average range (similar to percentiles )

Q: Open Traces dialog

A: The traces table :