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Posted to commits@doris.apache.org by GitBox <gi...@apache.org> on 2020/12/10 02:33:20 UTC
[GitHub] [incubator-doris] yangzhg opened a new issue #5054: improve performance of json load
yangzhg opened a new issue #5054:
URL: https://github.com/apache/incubator-doris/issues/5054
There are two points that affect performance in the current json load:
1 json is actually a traversal operation for searching by key. We call HasMember and operator[] twice, and need to traverse twice
2 If you use a string as the key to find the json object, strlen will be called every time, so the number of calls to strlen is the row number * column number
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[GitHub] [incubator-doris] yangzhg closed issue #5054: improve performance of json load
Posted by GitBox <gi...@apache.org>.
yangzhg closed issue #5054:
URL: https://github.com/apache/incubator-doris/issues/5054
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