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Posted to commits@cassandra.apache.org by "Yifan Cai (Jira)" <ji...@apache.org> on 2021/02/26 00:22:00 UTC
[jira] [Comment Edited] (CASSANDRA-16460) Document the side-effect
of Zero Copy Streaming when in a multiple data directories setup
[ https://issues.apache.org/jira/browse/CASSANDRA-16460?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17291286#comment-17291286 ]
Yifan Cai edited comment on CASSANDRA-16460 at 2/26/21, 12:21 AM:
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PR: [https://github.com/apache/cassandra/pull/912]
* Remove the outdated doc/comment regarding ZCS is only eligible for LCS. It is now available for all compaction strategy.
* Add a note in the webpage source about the side effect.
!doc-snapshot.png|width=515,height=235!
was (Author: yifanc):
PR: [https://github.com/apache/cassandra/pull/912]
* Remove the outdated the doc/comment regarding ZCS is only eligible for LCS. It is available for all compaction strategy.
* Add a note in the webpage source about the side effect.
!doc-snapshot.png|width=515,height=235!
> Document the side-effect of Zero Copy Streaming when in a multiple data directories setup
> -----------------------------------------------------------------------------------------
>
> Key: CASSANDRA-16460
> URL: https://issues.apache.org/jira/browse/CASSANDRA-16460
> Project: Cassandra
> Issue Type: Task
> Components: Documentation/Website
> Reporter: Yifan Cai
> Assignee: Yifan Cai
> Priority: Normal
> Attachments: doc-snapshot.png
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> During the compaction test task (CASSANDRA-16345), we discovered that when zero copy streaming (ZCS) is enabled, it can lead to the streamed files contain tokens that exceed the disk boundaries (only when using multiple data directories) on the target host. Since ZCS streams the entire SSTable as is.
> We should add a proper note to the [https://cassandra.apache.org/doc/latest/new/streaming.html#zero-copy-streaming] section to inform people when using the feature.
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