Gopal V created HIVE-20509:
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Summary: Plan: fix wasted memory in plans with large partition
counts
Key: HIVE-20509
URL: https://issues.apache.org/jira/browse/HIVE-20509
Project: Hive
Issue Type: Bug
Components: Query Planning
Reporter: Gopal V
{code}
public void addPathToAlias(Path path, String newAlias){
ArrayList<String> aliases = pathToAliases.get(path);
if (aliases == null) {
aliases = new ArrayList<>();
StringInternUtils.internUriStringsInPath(path);
pathToAliases.put(path, aliases);
}
aliases.add(newAlias.intern());
}
{code}
ArrayList::DEFAULT_CAPACITY is 10, so this wastes 500 bytes of memory due to
the {{new ArrayList<>();}}.
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