[release-2.7] Key violations in search while syncing data

Description of problem:

Search indexer pod logs errors while syncing data for local-cluster. 
E0424 14:04:40.682422 1 batch.go:77] ERROR processing batchItem.

{query:INSERT into search.edges values($1,$2,$3,$4,$5,$6) args:[local-cluster/xxxxxx-xx Pod local-cluster/xxxxxx-xx Prometheus ownedBy local-cluster] action:addEdge uid:local-cluster/xxxxxx-xx}

ERROR: duplicate key value violates unique constraint 

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:

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Actual results:

Expected results:

Complete sync with no error.

Additional info: