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https://issues.apache.org/jira/browse/IMPALA-9782?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Armstrong resolved IMPALA-9782.
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Fix Version/s: Impala 4.0
Resolution: Fixed
> KuduPartitionExpr is not thread-safe
> ------------------------------------
>
> Key: IMPALA-9782
> URL: https://issues.apache.org/jira/browse/IMPALA-9782
> Project: IMPALA
> Issue Type: Bug
> Components: Backend
> Reporter: Tim Armstrong
> Assignee: Tim Armstrong
> Priority: Major
> Fix For: Impala 4.0
>
>
> This is a blocker for supporting Kudu DML with mt_dop. The expression has
> some mutable objects in the ScalarExpr object that needs to be moved to the
> evaluator.
> KuduPartitioner is not thread-safe, because it uses an internal buffer. We
> should consider making it thread-safe or clonable, because the initialisation
> is expensive and does RPCs and things -
> https://github.com/cloudera/kudu/blob/master/src/kudu/client/partitioner-internal.cc#L40
> KuduPartialRow is inherently not thread-safe because it contains thread-local
> data.
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