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From "Riley Patterson (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-4117) Slow Query Log
Date Tue, 16 Aug 2011 05:30:29 GMT

     [ https://issues.apache.org/jira/browse/HBASE-4117?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Riley Patterson updated HBASE-4117:
-----------------------------------

          Labels: client ipc  (was: )
    Release Note: 
Exposes JSON-parseable fingerprint and details for queries that take longer than a configurable
threshold time. The exposure is currently to the main regionserver log, along with a (queryTooSlow)
tag which allows it to be grepped out and easily aggregated and/or monitored in adminstrator
scripts.

The patch also provides a standard way to extract fingerprint and detail information of interest
by requiring each "DatabaseCommand" to provide a fingerprint map and a details map, which
will be a superset of the fingerprint.
          Status: Patch Available  (was: Open)

> Slow Query Log
> --------------
>
>                 Key: HBASE-4117
>                 URL: https://issues.apache.org/jira/browse/HBASE-4117
>             Project: HBase
>          Issue Type: New Feature
>          Components: ipc
>            Reporter: Riley Patterson
>            Assignee: Riley Patterson
>            Priority: Minor
>              Labels: ipc, client
>
> Produce log messages for slow queries. The RPC server will decide what is slow based
on a configurable "warn response time" parameter. Queries designated as slow will then output
a "response too slow" message followed by a fingerprint of the query, and a summary limited
in size by another configurable parameter (to limit log spamming).

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