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https://issues.apache.org/jira/browse/HUDI-2788?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexey Kudinkin closed HUDI-2788.
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> Z-ordering Layout Optimization Strategy fails w/ Data Skipping enabled
> ----------------------------------------------------------------------
>
> Key: HUDI-2788
> URL: https://issues.apache.org/jira/browse/HUDI-2788
> Project: Apache Hudi
> Issue Type: Sub-task
> Components: Index
> Reporter: Alexey Kudinkin
> Assignee: Alexey Kudinkin
> Priority: Blocker
> Labels: pull-request-available
> Fix For: 0.10.0
>
>
> During testing of Z-ordering in test environment i've discovered following
> issues:
> # Queries failing for tables w/ enabled Clustering w/ Z-ordering Layout and
> data-skipping enabled, being unable to read `_SUCCESS` file (automatically
> created by Spark)
> # Some of the translations of the original query predicates into Z-index
> table predicates are translated incorrectly (`!=`, `not like`, etc)
> # Join merging indexes across commits incorrectly always checks for null
> first column (instead of Nth column) when picking the result of the merge
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