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https://issues.apache.org/jira/browse/KUDU-1945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17726020#comment-17726020
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ASF subversion and git services commented on KUDU-1945:
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Commit 252da818c55c83c4852b1c3a3e18e45c64ed7d10 in kudu's branch
refs/heads/branch-1.17.x from Abhishek Chennaka
[ https://gitbox.apache.org/repos/asf?p=kudu.git;h=252da818c ]
[server] KUDU-1945 Fix bug in RowOperationsPBDecoder
This fixes the situation where we decode any operation containing
auto incrementing column with auto_incrementing_counter being nullptr.
Change-Id: I540698ba346f9c6bed36607b222521b65c46018f
Reviewed-on: http://gerrit.cloudera.org:8080/19710
Tested-by: Kudu Jenkins
Reviewed-by: Alexey Serbin <ale...@apache.org>
Reviewed-on: http://gerrit.cloudera.org:8080/19919
Tested-by: Alexey Serbin <ale...@apache.org>
> Support generation of surrogate primary keys (or tables with no PK)
> -------------------------------------------------------------------
>
> Key: KUDU-1945
> URL: https://issues.apache.org/jira/browse/KUDU-1945
> Project: Kudu
> Issue Type: New Feature
> Components: client, master, tablet
> Reporter: Todd Lipcon
> Priority: Major
> Labels: roadmap-candidate
>
> Many use cases have data where there is no "natural" primary key. For
> example, a web log use case mostly cares about partitioning and not about
> precise sorting by timestamp, and timestamps themselves are not necessarily
> unique. Rather than forcing users to come up with their own surrogate primary
> keys, Kudu should support some kind of "auto_increment" equivalent which
> generates primary keys on insertion. Alternatively, Kudu could support tables
> which are partitioned but not internally sorted.
> The advantages would be:
> - Kudu can pick primary keys on insertion to guarantee that there is no
> compaction required on the table (eg always assign a new key higher than any
> existing key in the local tablet). This can improve write throughput
> substantially, especially compared to naive PK generation schemes that a user
> might pick such as UUID, which would generate a uniform random-insert
> workload (worst case for performance)
> - Make Kudu easier to use for such use cases (no extra client code necessary)
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