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Posted to issues@impala.apache.org by "Thomas Tauber-Marshall (JIRA)" <ji...@apache.org> on 2018/07/05 18:03:00 UTC

[jira] [Created] (IMPALA-7251) Fix QueryMaintenance calls in Aggregators

Thomas Tauber-Marshall created IMPALA-7251:
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             Summary: Fix QueryMaintenance calls in Aggregators
                 Key: IMPALA-7251
                 URL: https://issues.apache.org/jira/browse/IMPALA-7251
             Project: IMPALA
          Issue Type: Bug
    Affects Versions: Impala 3.1.0
            Reporter: Thomas Tauber-Marshall
            Assignee: Thomas Tauber-Marshall


A recent change, IMPALA-110 (part 2), refactored PartitionedAggregationNode into several classes, including GroupingAggregator. During this refactor, code that makes local allocations while evaluating exprs was moved from the ExecNode (now AggregationNode/StreamingAggregationNode) into the new type Aggregator, but code related to cleaning these allocations up (ie QueryMaintenance()) was not, resulting in some queries using an excessive amount of memory.



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