Joe McDonnell created IMPALA-13977:
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Summary: Switch from boost::unordered_map/unordered_set to
standard library equivalents
Key: IMPALA-13977
URL: https://issues.apache.org/jira/browse/IMPALA-13977
Project: IMPALA
Issue Type: Task
Components: Backend
Affects Versions: Impala 5.0.0
Reporter: Joe McDonnell
The standard library unordered_map/unordered_set are mostly drop-in
replacements for the boost versions. We can easily move most locations.
The main exceptions are:
# In be/src/exprs/in-predicate.h, this is a performance sensitive area that
was tuned in IMPALA-6621. We would need equivalent work to switch it, so maybe
that isn't worth it.
# Boost's hash function can handle more complicated key types, like
vector<int> and vector<string>. There are a couple locations that need this.
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