You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@beam.apache.org by "Wout Scheepers (JIRA)" <ji...@apache.org> on 2018/08/13 12:20:00 UTC
[jira] [Commented] (BEAM-2376) JdbcIO should allow multiple
statements
[ https://issues.apache.org/jira/browse/BEAM-2376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16578193#comment-16578193 ]
Wout Scheepers commented on BEAM-2376:
--------------------------------------
Any updates on this? Can't seem to find your PR [~jbonofre].
> JdbcIO should allow multiple statements
> ---------------------------------------
>
> Key: BEAM-2376
> URL: https://issues.apache.org/jira/browse/BEAM-2376
> Project: Beam
> Issue Type: Improvement
> Components: io-java-jdbc
> Affects Versions: Not applicable
> Reporter: Rik Nauta
> Assignee: Jean-Baptiste Onofré
> Priority: Major
> Fix For: Not applicable
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> Right now the JdbcIO pipeline adds a single Write statement to the batch per PCollection element. This makes it difficult to execute several statements that require a specific order (for instance due to constraints in the DB), since JDBC doesn't allow multiple statements in a single "addBatch".
> For instance, I can't execute {{INSERT INTO users (id) VALUES (test); INSERT INTO profiles (user_id, name) VALUES (test, 'John');}}
> There's several ways we could solve this, one would be not to return a PDone but just pass through the data so that you can at least chain several Writes.
> Alternatively we could take the Statement string, split on the ";" character if there is one and apply each statement to the either an array of argument setters or the same setter with an additional {{statement_#}} parameter. And then we simply don't commit a batch between these statements.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)