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https://issues.apache.org/jira/browse/KUDU-1623?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon resolved KUDU-1623.
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Resolution: Fixed
Fix Version/s: 1.1.0
> UPSERTs that include only PK columns can cause crashes
> ------------------------------------------------------
>
> Key: KUDU-1623
> URL: https://issues.apache.org/jira/browse/KUDU-1623
> Project: Kudu
> Issue Type: Bug
> Components: tablet
> Affects Versions: 1.0.0, 0.9.1
> Reporter: Todd Lipcon
> Priority: Blocker
> Fix For: 1.1.0
>
>
> If an UPSERT only specifies the PK columns of a table (eg because all of the
> columns in the table make up a PK, or because the other columns should be set
> to defaults), then on a duplicate key, the upserts will be converted into
> empty updates. These empty updates fire DCHECKs in debug mode, but in RELEASE
> mode can end up in delta stores and later cause unexpected crashes on flush.
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