Memory store plugin query results not stable

[jacobmarble]

Requirement - what kind of business use case are you trying to solve?

I use the memory store plugin for local application development. It's helpful that this store is performant, reliable, has consistent behavior. Scaling and durability are not necessary, of course.

Problem - what in Jaeger blocks you from solving the requirement?

When I query:

• with "Limit Results" to, say, 10
• the same query with, say, limit 100, would return more than 10 results
• click "Find Traces" more than once

...the results change. Traces appear and disappear from results.

Proposal - what do you suggest to solve the problem or improve the existing situation?

Results should be sorted, then limited. I have a simple PR #1934

Any open questions to address

None.