hive-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "wangzhenhua (G)" <wangzhen...@huawei.com>
Subject questions about hive CBO
Date Thu, 18 Jun 2015 01:03:04 GMT
Hi all,

I'm reading the source code of Hive cbo (CalcaitePlanner), but I find it hard to follow.
Listed below are some of the questions:
1. What's the relationship between HepPlanner and HiveVolcanoPlanner?
2. I don't have a clue about these concepts: clusters, traitDef and collectGarbage().

Thanks for any help.

________________________________
best regards,
-zhenhua
Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message