Github user joshelser commented on the issue:
https://github.com/apache/accumulo/pull/255
Aha!
> The following spans are not rooted (probably due to a parent span of
length 0ms):
I don't think this test is even validating the correct thing. That span is
supposed to be under..
```
1010+168 [email protected] close
2+169 [email protected] BinMutations 1
2+169 [email protected] binMutations
```
The test is really just verifying that we non-rooted spans are still logged
(which is definitely not the intent). It seems more like ACCUMULO-1755 broke
the span hierarchy in the TSBW.
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