[SERVER-48057] Compress Plan Cache Entries in Memory Created: 08/May/20  Updated: 06/Dec/22

Status: Backlog
Project: Core Server
Component/s: Index Maintenance
Affects Version/s: 4.2.5
Fix Version/s: None

Type: Task Priority: Major - P3
Reporter: Kevin Arhelger Assignee: Backlog - Query Execution
Resolution: Unresolved Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Assigned Teams:
Query Execution
Participants:

 Description   

Currently plan cache entries contain a host of useful information that is useful for debugging through $planCacheStats for example. However, very complex plans can contribute significantly to memory use.

Storing extra plan diagnostics compressed in the plan cache and decompressing when requested by $planCacheStats or other plan cache examination methods could dramatically decrease the memory footprint of the plan cache while retaining


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