Riza Suminto has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/21455 )

Change subject: IMPALA-13075: Cap memory usage for ExprValuesCache at 256KB
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Patch Set 7:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/21455/5/be/src/exec/hash-table.cc
File be/src/exec/hash-table.cc:

http://gerrit.cloudera.org:8080/#/c/21455/5/be/src/exec/hash-table.cc@376
PS5, Line 376: _exprs_) / sam
> If I understand correctly than capacity_ can be 1 or N*64. Isn't it possibl
Change the formula to use double in patch set 7.

The -8 in max_capacity calculation is to account for 1 extra BitMap overhead. 
Therefore, if mem_per_row = 4KB, max_capacity will be equal to 63.998046875. 
Thus, expect capacity_ = 63.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Iee27cbbe8d3100301d05a6516b62c45975a8d0e0
Gerrit-Change-Number: 21455
Gerrit-PatchSet: 7
Gerrit-Owner: Riza Suminto <[email protected]>
Gerrit-Reviewer: Csaba Ringhofer <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Riza Suminto <[email protected]>
Gerrit-Reviewer: Yida Wu <[email protected]>
Gerrit-Reviewer: Zoltan Borok-Nagy <[email protected]>
Gerrit-Comment-Date: Mon, 10 Jun 2024 21:35:46 +0000
Gerrit-HasComments: Yes

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