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https://issues.apache.org/jira/browse/CASSANDRA-4023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13225614#comment-13225614
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Jonathan Ellis commented on CASSANDRA-4023:
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We added the multithreadedness specifically because it *improves* startup time
for people with multiple spindles or SSDs...
Any ideas how to get the best of both worlds besides falling back to a config
options?
(Maybe it's time to add random vs sequential speed ratio as a setting, which at
least is general enough to be useful in other places.)
> Batch reading BloomFilters on startup
> -------------------------------------
>
> Key: CASSANDRA-4023
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4023
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Joaquin Casares
> Labels: datastax_qa
>
> 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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