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Date: Tue, 24 Jan 2012 00:37:40 +0000 (UTC)
From: "Todd Lipcon (Commented) (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (HBASE-5262) Structured event log for HBase for
 monitoring and auto-tuning performance
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    [ https://issues.apache.org/jira/browse/HBASE-5262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13191692#comment-13191692 ] 

Todd Lipcon commented on HBASE-5262:
------------------------------------

I have some preference against JSON -- IMO JSON isn't "strict" enough, so people tend to break the format over time without a centralized schema definition to remind them that this is a real interface. I would be happier to see either avro or protobuf used. But definitely +1 for something that's consumable by non-Java programs and won't need to be actively upgraded when we add or remove fields.
                
> Structured event log for HBase for monitoring and auto-tuning performance
> -------------------------------------------------------------------------
>
>                 Key: HBASE-5262
>                 URL: https://issues.apache.org/jira/browse/HBASE-5262
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Mikhail Bautin
>
> Creating this JIRA to open a discussion about a structured (machine-readable) log that will record events such as compaction start/end times, compaction input/output files, their sizes, the same for flushes, etc. This can be stored e.g. in a new system table in HBase itself. The data from this log can then be analyzed and used to optimize compactions at run time, or otherwise auto-tune HBase configuration to reduce the number of knobs the user has to configure.

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