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https://issues.apache.org/jira/browse/CASSANDRA-15900?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17148113#comment-17148113
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Dinesh Joshi edited comment on CASSANDRA-15900 at 6/30/20, 12:51 AM:
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The patch lgtm too. +1. I've kicked off tests as a final check
[here|https://circleci.com/workflow-run/35d72695-0461-4080-997f-20d54940ff98]
and
[here|https://circleci.com/workflow-run/3487a3b3-401e-4b50-aea8-fc667b2e64cd].
I'll commit once I get a clean run.
was (Author: djoshi3):
The patch lgtm too. +1.
> Close channel and reduce buffer allocation during entire sstable streaming
> with SSL
> -----------------------------------------------------------------------------------
>
> Key: CASSANDRA-15900
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15900
> Project: Cassandra
> Issue Type: Bug
> Components: Legacy/Streaming and Messaging
> Reporter: ZhaoYang
> Assignee: ZhaoYang
> Priority: Normal
> Fix For: 4.0-beta
>
>
> CASSANDRA-15740 added the ability to stream entire sstable by loading on-disk
> file into user-space off-heap buffer when SSL is enabled, because netty
> doesn't support zero-copy with SSL.
> But there are two issues:
> # file channel is not closed.
> # 1mb batch size is used. 1mb exceeds buffer pool's max allocation size,
> thus it's all allocated outside the pool and will cause large amount of
> allocations.
> [Patch|https://github.com/apache/cassandra/pull/651]:
> # close file channel when the last batch is loaded into off-heap bytebuffer.
> I don't think we need to wait until buffer is flushed by netty.
> # reduce the batch to 64kb which is more buffer pool friendly when streaming
> entire sstable with SSL.
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