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https://issues.apache.org/jira/browse/PHOENIX-5084?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16731176#comment-16731176
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James Taylor commented on PHOENIX-5084:
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I’d recommend changing the commit to a rollback and include this in a finally 
block of every PhoenixDatabaseMetadata call. It’s kind of like DDL calls which 
always do a rollback in case there’s an open transaction in progress  - 
following the idea of least surprises - you wouldn’t want to inadvertently 
commit data - so best to always rollback.

> Changes from Transactional Tables are not visible to query in different client
> ------------------------------------------------------------------------------
>
>                 Key: PHOENIX-5084
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-5084
>             Project: Phoenix
>          Issue Type: Bug
>    Affects Versions: 4.15.0, 4.14.1
>            Reporter: Lars Hofhansl
>            Assignee: Lars Hofhansl
>            Priority: Blocker
>         Attachments: PHOENIX-5084.txt
>
>
> Scenario:
> # Upsert and commit some data into a transactional table. (Autocommit or 
> following by explicit commit)
> # Query same table from another client
> The first query on the other client will not see the newly upserted/committed 
> data (regardless of how long one waits).
> A second identical query will see the new data.
> This happens with both Omid and Tephra.
> I guess we can't write a test for this, since it requires multiple JVMs.



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