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https://issues.apache.org/jira/browse/FLINK-7?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14996456#comment-14996456
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ASF GitHub Bot commented on FLINK-7:
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Github user fhueske commented on the pull request:
https://github.com/apache/flink/pull/1255#issuecomment-155052860
I just realized we also need to make the optimizer aware that two
auto-sampled range partitionings are not equivalent. These checks the to be
added to the `areCompatible()` methods of the `AbstractJoinDescriptor` and
`CoGroupDescriptor` to avoid incorrect joins and coGroups.
For now, it is sufficient to simply return `false` if a range partitioning
is observed for a join or coGroup. Later, we want to add a property to the
`GlobalProperties` that identifies the data distribution which is used for the
range partitioning.
> [GitHub] Enable Range Partitioner
> ---------------------------------
>
> Key: FLINK-7
> URL: https://issues.apache.org/jira/browse/FLINK-7
> Project: Flink
> Issue Type: Sub-task
> Components: Distributed Runtime
> Reporter: GitHub Import
> Assignee: Chengxiang Li
> Fix For: pre-apache
>
>
> The range partitioner is currently disabled. We need to implement the
> following aspects:
> 1) Distribution information, if available, must be propagated back together
> with the ordering property.
> 2) A generic bucket lookup structure (currently specific to PactRecord).
> Tests to re-enable after fixing this issue:
> - TeraSortITCase
> - GlobalSortingITCase
> - GlobalSortingMixedOrderITCase
> ---------------- Imported from GitHub ----------------
> Url: https://github.com/stratosphere/stratosphere/issues/7
> Created by: [StephanEwen|https://github.com/StephanEwen]
> Labels: core, enhancement, optimizer,
> Milestone: Release 0.4
> Assignee: [fhueske|https://github.com/fhueske]
> Created at: Fri Apr 26 13:48:24 CEST 2013
> State: open
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