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https://issues.apache.org/jira/browse/CASSANDRA-13000?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Murukesh Mohanan updated CASSANDRA-13000:
-----------------------------------------
Attachment: 0001-Adds-a-cqldumpslow-tool-which-analyses-the-debug-log.patch
Updated the patch to remove some JSON parsing code - I'd originally included
that to work in tandem with my initial misguided patch for CASSANDRA-13001. It
doesn't make any sense to keep it there. (Also fixed from some code indentation
complaints from flake8.)
> slow query log analysis tool
> ----------------------------
>
> Key: CASSANDRA-13000
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13000
> Project: Cassandra
> Issue Type: New Feature
> Components: Observability
> Reporter: Jon Haddad
> Assignee: Murukesh Mohanan
> Fix For: 4.0
>
> Attachments:
> 0001-Adds-a-cqldumpslow-tool-which-analyses-the-debug-log.patch,
> 0001-Adds-a-cqldumpslow-tool-which-analyses-the-debug-log.patch,
> csqldumpslow.py
>
>
> As a follow up to CASSANDRA-12403, it would be very helpful to have a tool to
> process the slow queries that are logged. In the MySQL world, there's a tool
> called mysqldumpslow, which processes a slow query log, abstracts the
> parameters to prepared statements, and shows the queries which are causing
> problems based on frequency. The {{mysqldumpslow}} utillity shows an
> aggregated count & time statistics spent on slow queries. For instance:
> {code}shell> mysqldumpslow
> Reading mysql slow query log from
> /usr/local/mysql/data/mysqld51-apple-slow.log
> Count: 1 Time=4.32s (4s) Lock=0.00s (0s) Rows=0.0 (0), root[root]@localhost
> insert into t2 select * from t1
> Count: 3 Time=2.53s (7s) Lock=0.00s (0s) Rows=0.0 (0), root[root]@localhost
> insert into t2 select * from t1 limit N
> Count: 3 Time=2.13s (6s) Lock=0.00s (0s) Rows=0.0 (0), root[root]@localhost
> insert into t1 select * from t1{code}
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