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https://issues.apache.org/jira/browse/CASSANDRA-4023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13226742#comment-13226742
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Michael Harris commented on CASSANDRA-4023:
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Hi Jonathan. We patched our cluster and startup time didn't decrease much if
at all. I still think the patch is probably a positive help, but it looks like
there are bigger problems elsewhere. Let me know if any additional testing or
logs could help out here.
> Improve BloomFilter deserialization performance
> -----------------------------------------------
>
> Key: CASSANDRA-4023
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4023
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Affects Versions: 1.0.1
> Reporter: Joaquin Casares
> Assignee: Jonathan Ellis
> Priority: Minor
> Labels: datastax_qa
> Fix For: 1.0.9, 1.1.0
>
> Attachments: 4023.txt
>
>
> The difference of startup times between a 0.8.7 cluster and 1.0.7 cluster
> with the same amount of data is 4x greater in 1.0.7.
> It seems as though 1.0.7 loads the BloomFilter through a series of reading
> longs out in a multithreaded process while 0.8.7 reads the entire object.
> Perhaps we should update the new BloomFilter to do reading in batch as well?
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