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https://issues.apache.org/jira/browse/CASSANDRA-5222?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis resolved CASSANDRA-5222.
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Resolution: Cannot Reproduce
Sounds to me like you're not actually running 1.1.6. Look at
LeveledCompactionStrategy.getScanners; it will only open one scanner per level,
except for L0. (And we guarantee that only up to MAX_COMPACTING_L0=32 L0
candiates participate, see LeveledManifest.getCompactionCandidates.)
> OOM Exception during repair session with LeveledCompactionStrategy
> ------------------------------------------------------------------
>
> Key: CASSANDRA-5222
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5222
> Project: Cassandra
> Issue Type: Bug
> Affects Versions: 1.1.6
> Environment: 3Gb Heap(12Gb per node RAM)
> 36 nodes, 0.9 Tb of data per node, Leveled compaction strategy, SSTable size
> =100Mb
> Reporter: Ivan Sobolev
> Priority: Critical
> Attachments: sstablescanner.png
>
>
> 1.8 Gb of heap is consumed with 12k SSTableBoundedScanner * 140kbytes
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