imay opened a new issue #2011: Replace Arena with MemPool URL: https://github.com/apache/incubator-doris/issues/2011 We should replace Arena with MemPool to avoid memory copy. Now in olap/Reader we use MemPool to allocate memory for varchar field. But we use Arena to allocate memory for varchar filed in segment V2. If both of them use MemPool, we can transfer ownership without memory copy.
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