Manish Maheshwari created IMPALA-13486:
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Summary: Improve memory estimation and allocation for queries on
complex types
Key: IMPALA-13486
URL: https://issues.apache.org/jira/browse/IMPALA-13486
Project: IMPALA
Issue Type: Improvement
Reporter: Manish Maheshwari
Improve memory estimation and allocation for queries on complex types taking
into account the number of values in the complex type and any functions like
unnest that would consume a lot of memory.
Currently underestimating memory causes a lot of tcmalloc calls and the query
get blocked waiting for tcmalloc central freelist.
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