[
https://issues.apache.org/jira/browse/PHOENIX-2692?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15152771#comment-15152771
]
James Taylor commented on PHOENIX-2692:
---------------------------------------
+1. Looks good, [~gabriel.reid]. Please commit to 4.x and master branches.
> Provide flag for disabling statistics collection
> ------------------------------------------------
>
> Key: PHOENIX-2692
> URL: https://issues.apache.org/jira/browse/PHOENIX-2692
> Project: Phoenix
> Issue Type: New Feature
> Reporter: Gabriel Reid
> Assignee: Gabriel Reid
> Fix For: 4.7.0
>
> Attachments: PHOENIX-2692.patch
>
>
> It would be useful to be able to completely disable statistics collection in
> some situations. This is typically done for debugging performance issues that
> have come up as part of statistics collection.
> Disabling statistics collection is typically done by setting the
> {{phoenix.stats.guidepost.width}} config setting to a very large number, but
> this has the problem that it is not 100% reliable (some guidepost data is
> still written to the SYSTEM.STATS table if this is done), and it's just kind
> of a work-around that currently (mostly) works, but this method of disabling
> stats collection isn't guaranteed to work in the future (for example, if new
> types of statistics are also collected, or if they're based on something
> other than file size).
> Our specific use case for disabling statistics collection is based on the way
> that we're typically using Phoenix, which is more as a library which
> facilitates querying a combination of data that is managed by Phoenix along
> with data that is not managed by Phoenix. In this case, because the
> statistics collection only looks at the data managed by Phoenix, it doesn't
> function as needed (as well as having the additional issue of leading to
> problems like LP-2680).
> Ideally we'll move towards using statistics as we iron out these issues, but
> having the ability to disable statistics (at least for now) would also be
> very useful.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
