[badger] Filter duplicate results from a single indexSeek [fixes #1604] #1649
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Signed-off-by: Michael Burman yak@iki.fi
Which problem is this PR solving?
Resolves #1604, seeing multiple traces in the UI
Short description of the changes
Changes to the badger storage backend reader part (no changes to write path):
Filtering duplicates from the index key results when those occur in the same index seek. Previously only cross-index-seeks had their duplicates removed. Also added a test to ensure this does not break anymore.