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https://issues.apache.org/jira/browse/CASSANDRA-20351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17947307#comment-17947307
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Szymon Miezal commented on CASSANDRA-20351:
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[~blambov] you might be interested in it.
> Reading mmapped trie-index exceeding 2GiB results in IndexOutOfBoundsException
> ------------------------------------------------------------------------------
>
> Key: CASSANDRA-20351
> URL: https://issues.apache.org/jira/browse/CASSANDRA-20351
> Project: Apache Cassandra
> Issue Type: Bug
> Components: Local/SSTable
> Reporter: Szymon Miezal
> Assignee: Szymon Miezal
> Priority: Normal
> Fix For: 5.0.x, 5.x
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> {color:#1f2328}Memory-mapping is done in buffers of size less than
> 2GiB.{color}
> {color:#1f2328}When these buffers aren't aligned to 4KiB and the trie-index
> file {color}{color:#1f2328}spans many buffers then reading it results in
> going out of buffer bounds.{color}
> To fix it we need to {color:#1f2328}make sure that the buffers are correctly
> aligned.{color}
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