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https://issues.apache.org/jira/browse/SOLR-13220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16808241#comment-16808241
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Joel Bernstein edited comment on SOLR-13220 at 4/3/19 12:04 AM:
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My thinking on this has evolved. The new plan is to change the JDBCStream to
lazily cache connections in a pool that is managed by the Stream handler. The
handle to the cached connection will be a hash of the connectionUrl, user and
password. Caching would be off be default and turned on with a flag in the jdbc
expression.
I'll likely change the description on this ticket to match this design.
was (Author: joel.bernstein):
My thinking on this has evolved. The new plan is to change the JDBCStream to
lazily cache connections in a pool that is managed by the Stream handler. The
handle to the cached connection will be a hash of the connectionUrl, user and
password. Caching would be off be default and turned on with a flag in the jdbc
expression.
> Add connect Streaming Expression to create cached JDBC connections
> ------------------------------------------------------------------
>
> Key: SOLR-13220
> URL: https://issues.apache.org/jira/browse/SOLR-13220
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Joel Bernstein
> Assignee: Joel Bernstein
> Priority: Major
>
> Currently the *jdbc* Streaming Expression requires that username, password
> and URL parameters are set to operate. This ticket will allow users to
> configure JDBC connections using the new *connect* Streaming Expression.
> The *jdbc* Streaming Expression will be changed to use the cached connections
> rather than accepting parameters directly.
> The *parallel* Streaming Expression can be used to setup connections on each
> node of a collection.
> The *Apache Hive* JDBC driver will also be included with Apache Solr as part
> of this ticket to allow seamless out-of-the-box connection to Apache Hive.
> Syntax:
> {code:java}
> connect(connectionName, url="", username="", password=""){code}
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