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Posted to issues-all@impala.apache.org by "Tim Armstrong (Jira)" <ji...@apache.org> on 2019/12/10 19:46:00 UTC
[jira] [Assigned] (IMPALA-9197) Hash table lookup should be
read-only
[ https://issues.apache.org/jira/browse/IMPALA-9197?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tim Armstrong reassigned IMPALA-9197:
-------------------------------------
Assignee: Tim Armstrong
> Hash table lookup should be read-only
> -------------------------------------
>
> Key: IMPALA-9197
> URL: https://issues.apache.org/jira/browse/IMPALA-9197
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend
> Reporter: Tim Armstrong
> Assignee: Tim Armstrong
> Priority: Major
> Labels: multithreading
>
> For IMPALA-9156, we need concurrent lookups to the hash table to be thread safe. We are pretty close to that, except a few stats are maintained in HashTable and would be modified concurrently from multiple threads.
> We should modify those places to update the stats in HashTableCtx instead.
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