Paul Rogers created DRILL-5517:
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Summary: Provide size-aware set operations in value vectors
Key: DRILL-5517
URL: https://issues.apache.org/jira/browse/DRILL-5517
Project: Apache Drill
Issue Type: Improvement
Affects Versions: 1.11.0
Reporter: Paul Rogers
Assignee: Paul Rogers
Fix For: 1.11.0
DRILL-5211 describes a memory fragmentation issue in Drill. The resolution is
to limit vector sizes to 16 MB (the size of Netty memory allocation "slabs.")
Effort starts by providing "size-aware" set operations in value vectors which:
* Operate as {{setSafe()}} while vectors are below 16 MB.
* Return false if setting the value (and growing the vector) would exceed the
vector limit.
The methods in value vectors then become the foundation on which we can
construct size-aware record batch "writers."
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