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https://issues.apache.org/jira/browse/PHOENIX-1016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14066503#comment-14066503
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James Taylor commented on PHOENIX-1016:
---------------------------------------
Thanks for the updates, [~tdsilva]. Couple of questions:
- I think it's fine (better really) if an exception is thrown when the current
sequence value goes past Long.MAX_VALUE. If the sequence has CYCLE declared,
will it wrap, though instead?
- What's the reason behind needing to explicitly call this now as it wasn't
necessary before?
{code}
+ // Test that sequences don't have gaps (if no other client request the
same sequence before
+ // we close it)
+ ((ConnectionQueryServicesTestImpl)
driver.getConnectionQueryServices(getUrl(),
TEST_PROPERTIES)).returnAllSequences();
{code}
> Support MINVALUE, MAXVALUE, and CYCLE options in CREATE SEQUENCE
> ----------------------------------------------------------------
>
> Key: PHOENIX-1016
> URL: https://issues.apache.org/jira/browse/PHOENIX-1016
> Project: Phoenix
> Issue Type: Bug
> Reporter: James Taylor
> Assignee: Thomas D'Silva
> Attachments: AddSeqColumns.txt, PHOENIX-1016-3.1.v3.patch,
> PHOENIX-1016-4.1.v3.patch, PHOENIX-1016.3.0.patch, PHOENIX-1016.patch,
> PHOENIX-1016.v2.3.0.patch, PHOENIX-1016.v2.patch, diff.txt
>
>
> We currently don't support MINVALUE, MAXVALUE, and CYCLE options in CREATE
> SEQUENCE, but we should. See
> http://msdn.microsoft.com/en-us/library/ff878091.aspx for the syntax.
> I believe MINVALUE applies if the INCREMENT is negative while MAXVALUE
> applies otherwise. If the value of a sequence goes beyond MINVALUE/MAXVALUE,
> then:
> - if CYCLE is true, then the sequence value should start again at the START
> WITH value (or the MINVALUE if specified too? Not sure about this).
> - if CYCLE is false, then an exception should be thrown.
> To implement this:
> - make the grammar changes in PhoenixSQL.g
> - add member variables for MINVALUE, MAXVALUE, and CYCLE to
> CreateSequenceStatement
> - add the appropriate error checking and handle bind variables for these new
> options in CreateSequenceCompiler
> - modify the MetaDataClient.createSequence() call by passing along these new
> parameters.
> - same for ConnectionQueryServices.createSequence() call
> - same for Sequence.createSequence().
> - pass along these parameters as new KeyValues in the Append that constitutes
> the RPC call
> - act on these in the SequenceRegionObserver coprocessor as indicated above.
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