[GitHub] [incubator-doris] morningman commented on a change in pull request #4150: [BUG] fix 4149, add sessionVariable to choose broadcastjoin first when cardinality cannot be estimated

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

morningman commented on a change in pull request #4150:
URL: https://github.com/apache/incubator-doris/pull/4150#discussion_r459195573



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File path: docs/zh-CN/administrator-guide/variables.md
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@@ -338,3 +338,6 @@ SET forward_to_master = concat('tr', 'u', 'e');
 
     是否将 bitmap 和 hll 类型的 count distinct 查询重写为 bitmap_union_count 和 hll_union_agg 。
 
+* `prefer_broadcast_join`

Review comment:
       How about name it to "prefer_join_method", and value is "broadcast" or "shuffle"




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