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https://issues.apache.org/jira/browse/FLUME-1045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13285415#comment-13285415
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Inder SIngh commented on FLUME-1045:
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Jarcec,
for your reference links are here
1. http://incubator.apache.org/kafka/design.html (P.S. - refer section Message
Persistence and Caching
Don't fear the filesystem!)
2. Varnish Cache design (https://www.varnish-cache.org/trac/wiki/ArchitectNotes)
P.S. - we can definitely add the virtual mem channel using the algo outlined by
Sharad above. These links are meant for evaluating the performance of FILE
Channel w.r.t sequential disk IO.
> Proposal to support disk based spooling
> ---------------------------------------
>
> Key: FLUME-1045
> URL: https://issues.apache.org/jira/browse/FLUME-1045
> Project: Flume
> Issue Type: New Feature
> Affects Versions: v1.0.0
> Reporter: Inder SIngh
> Priority: Minor
> Labels: patch
> Attachments: FLUME-1045-1.patch, FLUME-1045-2.patch
>
>
> 1. Problem Description
> A sink being unavailable at any stage in the pipeline causes it to back-off
> and retry after a while. Channel's associated with such sinks start buffering
> data with the caveat that if you are using a memory channel it can result in
> a domino effect on the entire pipeline. There could be legitimate down times
> eg: HDFS sink being down for name node maintenance, hadoop upgrades.
> 2. Why not use a durable channel (JDBC, FileChannel)?
> Want high throughput and support sink down times as a first class use-case.
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