[jira] [Assigned] (KUDU-1994) Automatically Create New Range Partitions When Needed

["LiFu He (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KUDU-1994?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

LiFu He reassigned KUDU-1994:
-----------------------------

    Assignee: Thomas D'Silva  (was: LiFu He)

> Automatically Create New Range Partitions When Needed
> -----------------------------------------------------
>
>                 Key: KUDU-1994
>                 URL: https://issues.apache.org/jira/browse/KUDU-1994
>             Project: Kudu
>          Issue Type: Improvement
>    Affects Versions: 1.3.0
>            Reporter: Alan Jackoway
>            Assignee: Thomas D'Silva
>            Priority: Major
>              Labels: roadmap-candidate
>
> We have a few Kudu tables where we use a range-partitioned timestamp as part of the key. The intention of this is to keep data locality for data that is likely to be scanned together, such as events in a timeseries.
> Currently we create these with a partitions that look like this:
> {noformat}
> RANGE (ts) (
>     PARTITION 0 <= VALUES < 1420088400000,
>     PARTITION 1420088400000 <= VALUES < 1427860800000,
>     PARTITION 1427860800000 <= VALUES < 1435723200000,
>     PARTITION 1435723200000 <= VALUES < 1443672000000,
>     PARTITION 1443672000000 <= VALUES < 1451624400000,
>     PARTITION 1451624400000 <= VALUES < 1459483200000,
>     PARTITION 1459483200000 <= VALUES < 1467345600000,
>     PARTITION 1467345600000 <= VALUES < 1475294400000,
>     PARTITION 1475294400000 <= VALUES < 1483246800000,
>     PARTITION 1483246800000 <= VALUES < 1491033600000,
>     PARTITION 1491033600000 <= VALUES < 1498896000000,
>     PARTITION 1498896000000 <= VALUES < 1506844800000
> )
> {noformat}
> The problem is that as time goes on we have to choose to either create empty partitions in advance of when we are writing data or risk forgetting to create a partition and having writes of new data fail.
> Ideally, Kudu would have a way to indicate the size of the partitions (in this example 3 months converted to milliseconds) and then automatically create new partitions when new data comes in that needs the partition.



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