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https://issues.apache.org/jira/browse/PHOENIX-76?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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James Taylor updated PHOENIX-76:
--------------------------------
Attachment: patch.diff
Patch to use logic of forcing ExplicitColumnTracker not to be used for
aggregate queries as well (but not adding the filter, as we don't need it in
that case)
> Fix perf regression due to PHOENIX-29
> -------------------------------------
>
> Key: PHOENIX-76
> URL: https://issues.apache.org/jira/browse/PHOENIX-76
> Project: Phoenix
> Issue Type: Bug
> Affects Versions: 3.0.0
> Reporter: James Taylor
> Assignee: Anoop Sam John
> Fix For: 3.0.0
>
> Attachments: PHOENIX-76.patch, patch.diff
>
>
> Many queries got slower as a result of PHOENIX-29. There are a few simple
> checks we can do to prevent the adding of the new filter:
> - if the query is an aggregate query, as we don't return KVs in this case, so
> we're only doing extra processing that we don't need. For this, you can check
> statement.isAggregate().
> - if there are multiple column families referenced in the where clause, as
> the seek that gets done is better in this case because we'd potentially be
> seeking over an entire stores worth of data into a different store.
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