[jira] [Created] (ORC-1950) [C++] Replace std::unorder_map with google dense_hash_map as SortedStringDictionary and remove reorder to improve write performance of dict-encoding columns

[Taiyang Li (Jira)]

Taiyang Li created ORC-1950:
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             Summary: [C++] Replace std::unorder_map with google dense_hash_map 
as SortedStringDictionary and remove reorder to improve write performance of 
dict-encoding columns
                 Key: ORC-1950
                 URL: https://issues.apache.org/jira/browse/ORC-1950
             Project: ORC
          Issue Type: Bug
            Reporter: Taiyang Li






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