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Posted to issues@ambari.apache.org by "Olivér Szabó (JIRA)" <ji...@apache.org> on 2017/04/12 13:16:41 UTC
[jira] [Commented] (AMBARI-20378) LogFeeder: Add de-duplication
support
[ https://issues.apache.org/jira/browse/AMBARI-20378?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15965811#comment-15965811 ]
Olivér Szabó commented on AMBARI-20378:
---------------------------------------
committed to branch-2.5:
{code:java}
commit 9bc97c4b998a51db4d2ed9d986fe318194f8a964
Author: oleewere <ol...@gmail.com>
Date: Fri Mar 10 14:45:13 2017 +0100
AMBARI-20378. Logfeeder: add de-duplication support (oleewere)
{code}
> LogFeeder: Add de-duplication support
> -------------------------------------
>
> Key: AMBARI-20378
> URL: https://issues.apache.org/jira/browse/AMBARI-20378
> Project: Ambari
> Issue Type: Bug
> Components: ambari-logsearch
> Affects Versions: 2.5.0
> Reporter: Olivér Szabó
> Assignee: Olivér Szabó
> Fix For: trunk, 2.5.1
>
> Attachments: AMBARI-20378.patch
>
>
> Add de-duplication support to logfeeder.
> For handling duplications, it will be an LRU cache for every input.
> It can be set up at logfeeder.properties (global setting). For example (the values below are the defaults):
> {code:java}
> logfeeder.cache.enabled=false
> logfeeder.cache.size=100
> logfeeder.cache.key.field=log_message
> logfeeder.cache.dedup.interval=1000
> logfeeder.cache.last.dedup.enabled=false
> {code}
> can be overriden in input config block (per monitored file)
> {code:java}
> {
> "input": [
> {
> ...
> "cache_enabled" : "true",
> "cache_size" : "100",
> "cache_dedup_interval" : "1000",
> "cache_last_dedup_enabled" : "false",
> "cache_key_field" : "log_message"
> }
> ] ...
> {code}
> {{cache_dedup_interval}} : if the interval (timestamp - date difference) is not reached between 2 log messages (same content), then the new log will be dropped.
> {{cache_last_dedup_enabled}}: if its enabled and the new log message is the same as the last one, the new log will be dropped. (dedup interval wont have impact on that feature)
> {{cache_key_field}} : field of the log message which will be compared and stored in the cache (as keys)
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