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Posted to issues-all@impala.apache.org by "Tim Armstrong (Jira)" <ji...@apache.org> on 2020/06/03 17:50:00 UTC
[jira] [Assigned] (IMPALA-9782) KuduPartitionExpr is not
thread-safe
[ https://issues.apache.org/jira/browse/IMPALA-9782?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tim Armstrong reassigned IMPALA-9782:
-------------------------------------
Assignee: Tim Armstrong
> 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
>
> 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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