[CASSANDRA-17787] Full repair on a keyspace with a large amount of tables causes OOM - ASF JIRA

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Details

Type: Bug
Status: Resolved
Priority: Normal
Resolution: Duplicate
Fix Version/s: None
Component/s: Consistency/Repair
Labels:
- lhf

Bug Category:
Degradation - Performance Bug/Regression
Severity:
Normal
Complexity:
Normal
Discovered By:
User Report
Platform:

All
Impacts:

None

Description

Running a nodetool repair -pr --full on a keyspace with a few hundred tables will cause a direct memory OOM, or lots of heap pressure with use_offheap_merkle_trees: false. Adjusting repair_session_space_in_mb does not seem to help. From an initial look at a heap dump, it appears to node is holding many remote trees in memory.