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https://reviews.apache.org/r/9003/
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Review request for Flume.


Description
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Rather than kill the source outright when a channel fills, the channel should 
throw away the event (since there is nowhere to put it).  A basic back-off 
mechanism is also implemented so retries get spaced out the longer the channel 
remains full up to a configurable limit.

Patches are attached to FLUME-1685 including a backport to the 1.2 branch 
(which I use with Cloudera's cdh3u5 distribution)


This addresses bug FLUME-1685.
    https://issues.apache.org/jira/browse/FLUME-1685


Diffs
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  .gitignore 08c33a0 
  flume-ng-core/pom.xml d01baca 
  flume-ng-core/src/main/java/org/apache/flume/source/ExecSource.java 46f672f 
  
flume-ng-core/src/main/java/org/apache/flume/source/ExecSourceConfigurationConstants.java
 0ba0508 
  flume-ng-core/src/test/java/org/apache/flume/source/TestExecSource.java 
8bcf320 

Diff: https://reviews.apache.org/r/9003/diff/


Testing
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A unit test was created to test the full channel condition.
This patch has been running in our production environment for 2 months and has 
successfully recovered several times from full channel events.


Thanks,

Steve Hoffman

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