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From Hari Shreedharan <hshreedha...@cloudera.com>
Subject Re: log dump tool?
Date Tue, 09 Jun 2015 02:39:06 GMT
Flume has a tool that will allow you to run all events in the file channel through a piece
of custom code you’d supply:

bin/flume-ng tool FCINTEGRITYTOOL

You can see the arguments you’d need to supply when you execute this command.

Hari Shreedharan

> On Jun 8, 2015, at 7:30 PM, Robert B Hamilton <robert.hamilton@gm.com> wrote:
> Is there anything like a logdump tool for flume file channel?   
> Specifically I+IBk-m looking for some way to extract say the event data for the last
N puts.
> Alternatively can the logs be modified so that the last N (sink) commits will be ignored
on restart?
> The scenario that I+IBk-m concerned about is this:  
> 1.       server crashes, flume is restarted once the server is brought back.
> 2.       End user sees something odd in his HiveQL and speculates that data was lost.
> 3.       We peek into the WAL as they existed just before the restart (we saved off a
copy) and either
> a.       Find an event corresponding to the missing data and use that to fix the data
in the destination, or
> b.      Prove that the event corresponding to the missing data was not present at least
as far back as the logs go
> I+IBk-m just wondering if there is a tool which makes number 3 possible+ICY.
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