[jira] [Comment Edited] (FLUME-2498) Implement Taildir Source

["Satoshi Iijima (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLUME-2498?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14659591#comment-14659591 ] 

Satoshi Iijima edited comment on FLUME-2498 at 8/6/15 8:15 AM:
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In my production environment, this source can tail more than several thousands of line appends per second with a few percent CPU usage at a host which has 4 CPU cores. I think it is enough.


was (Author: iijima_satoshi):
In my production environment, this source can tail more than several thousands of appends per second with a few percent CPU usage at a host which has 4 CPU cores. I think it is enough.

> Implement Taildir Source
> ------------------------
>
>                 Key: FLUME-2498
>                 URL: https://issues.apache.org/jira/browse/FLUME-2498
>             Project: Flume
>          Issue Type: New Feature
>          Components: Sinks+Sources
>            Reporter: Satoshi Iijima
>             Fix For: v1.7.0
>
>         Attachments: FLUME-2498-2.patch, FLUME-2498-3.patch, FLUME-2498.patch
>
>
> This is the proposal of implementing a new tailing source.
> This source watches the specified files, and tails them in nearly real-time once appends are detected to these files.
> * This source is reliable and will not miss data even when the tailing files rotate.
> * It periodically writes the last read position of each file in a position file using the JSON format.
> * If Flume is stopped or down for some reason, it can restart tailing from the position written on the existing position file.
> * It can add event headers to each tailing file group. 
> A attached patch includes a config documentation of this.
> This source requires Unix-style file system and Java 1.7 or later.



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