[
https://issues.apache.org/jira/browse/IMPALA-13019?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Wenzhe Zhou reassigned IMPALA-13019:
------------------------------------
Assignee: Pranav Yogi Lodha
> Add query option to keep DBCP DataSource objects in cache for longer time
> -------------------------------------------------------------------------
>
> Key: IMPALA-13019
> URL: https://issues.apache.org/jira/browse/IMPALA-13019
> Project: IMPALA
> Issue Type: Sub-task
> Components: Frontend
> Reporter: Wenzhe Zhou
> Assignee: Pranav Yogi Lodha
> Priority: Major
>
> IMPALA-12910 adds a new class DataSourceObjectCache to save DBCP DataSource
> objects. DBCP DataSource objects hold JDBC driver. By sharing DBCP
> DataSource objects across multiple JDBC requests, we can avoid to load JDBC
> driver. Current code checks reference count for each DBCP DataSource object,
> and removes the cached object once reference count reaches 0.
> DBCP DataSource objects should be kept in cache even reference count reaches
> 0. We could add a query option to enable it. This need a working thread to
> periodically clean up objects which are idle for long time. Maybe separate
> maps to save active objects and idle objects.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-all-unsubscr...@impala.apache.org
For additional commands, e-mail: issues-all-h...@impala.apache.org
