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Posted to dev@flume.apache.org by "Inder SIngh (Updated) (JIRA)" <ji...@apache.org> on 2012/03/22 12:12:22 UTC

[jira] [Updated] (FLUME-1045) Proposal to support disk based spooling

     [ https://issues.apache.org/jira/browse/FLUME-1045?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Inder SIngh updated FLUME-1045:
-------------------------------

    Release Note: I
          Status: Patch Available  (was: Open)
    
> 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
>
> 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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