tarun11Mavani

Add consensus check before selecting a segment for compaction or dele…

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### Problem As discussed in #17337, Segments are incorrectly deleted when any single replica reported zero valid documents, causing permanent data loss during server restarts and async state transitions where...

Incorrect deletion of valid upsert segments due to replica-level validDocIds inconsistency during merge-compaction and server restarts

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### Description: We observed data loss in a FULL upsert table caused by an incorrect segment-deletion decision during the UpsertMergeCompactionTask. Two segments (S1, S2) existed across two servers and were...

Add Segment Selection Randomization to UpsertCompactionTask

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## Problem `UpsertCompactionTask` consistently selects the same top segments with the highest invalid record counts for compaction. When some of these top segments encounter issues (corrupted data, processing failures, etc.)...