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Mikhail Bautin commented on HBASE-5262:
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JSON could be the encoding for the "value" part of each log entry. However, if
we decide to store this type of information in HBase itself, we will need to
think through the schema from the point of view of at least couple of different
use cases, e.g. analyzing compaction performance, auto-tuning the compaction
algorithm, maybe auto-tuning some block cache settings, etc.
> 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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