[GitHub] [incubator-doris] gaodayue opened a new pull request #1590: Implement BetaRowsetWriter

[GitBox <gi...@apache.org>]

gaodayue opened a new pull request #1590: Implement BetaRowsetWriter
URL: https://github.com/apache/incubator-doris/pull/1590
 
 
   BetaRowsetWriter is used to write rowset in V2 segment format.
   
   This PR contains several interface changes
   1. Rowset.make_snapshot() is renamed to `link_files_to` because hard links are also useful in copy task, linked schema change, etc
   2. Rowset.copy_files_to_path() is renamed to `copy_files_to` to be consistent with other names
   3. RowsetWriter.mem_pool() is removed because not all rowset writers use MemPool
   4. RowsetWriter.garbage_collection() is removed because it's not used by clients
   5. SegmentGroup's make_snapshot() is removed because link_segments_to_path() provides similar functionality

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