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https://issues.apache.org/jira/browse/CASSANDRA-15219?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17520605#comment-17520605
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Benedict Elliott Smith commented on CASSANDRA-15219:
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The same way we do today for uncompressed segments. You don't have to hand over
the entire file, just offsets, so you can control rate and flow.
> Use sendFile for streaming partial files
> ----------------------------------------
>
> Key: CASSANDRA-15219
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15219
> Project: Cassandra
> Issue Type: Improvement
> Components: Consistency/Streaming
> Reporter: Benedict Elliott Smith
> Assignee: Adverg Ebashinskii
> Priority: Normal
> Fix For: 4.x
>
>
> In the case of compressed files, sendFile is a drop-in replacement for our
> current buffered reads/writes. For uncompressed files, we probably want to
> only optionally compress them for streaming, as in many cases CPU will
> constrain more than the network, particularly to a local replica. In the
> case that we need to compress, we can add a pipeline to the Netty handler to
> compress the whole stream.
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