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https://issues.apache.org/jira/browse/CASSANDRA-2053?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis updated CASSANDRA-2053:
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Attachment: 2053.txt
Moves CacheWriter to a top-level class and runs it on the CompactionManager
executor. Reads and writes udpated to use BRAF cache-non-polluting mode.
> Make cache saving less contentious
> ----------------------------------
>
> Key: CASSANDRA-2053
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2053
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 0.7.0
> Reporter: Nick Bailey
> Fix For: 0.7.2
>
> Attachments: 2053.txt
>
>
> The current default for saving key caches is every hour. Additionally the
> default timeout for flushing memtables is every hour. I've seen situations
> where both of these occuring at the same time every hour causes enough
> pressure on the node to have it drop messages and other nodes mark it dead.
> This happens across the cluster and results in flapping.
> We should do something to spread this out. Perhaps staggering cache
> saves/flushes that occur due to timeouts.
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