-
Notifications
You must be signed in to change notification settings - Fork 3.7k
[Improvement](statistics) Improve sample count accuracy. #25175
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Conversation
77f7de7 to
3a0d336
Compare
25fe617 to
4656dd9
Compare
fe/fe-core/src/main/java/org/apache/doris/catalog/external/ExternalTable.java
Outdated
Show resolved
Hide resolved
fe/fe-core/src/main/java/org/apache/doris/statistics/HMSAnalysisTask.java
Outdated
Show resolved
Hide resolved
fe/fe-core/src/main/java/org/apache/doris/statistics/HMSAnalysisTask.java
Show resolved
Hide resolved
|
run buildall |
|
(From new machine)TeamCity pipeline, clickbench performance test result: |
fe/fe-core/src/main/java/org/apache/doris/statistics/util/StatisticsUtil.java
Outdated
Show resolved
Hide resolved
fe/fe-core/src/main/java/org/apache/doris/catalog/external/HMSExternalTable.java
Show resolved
Hide resolved
bd6a208 to
ad75f41
Compare
|
run buildall |
|
(From new machine)TeamCity pipeline, clickbench performance test result: |
|
run buildall |
|
(From new machine)TeamCity pipeline, clickbench performance test result: |
morningman
left a comment
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
LGTM
|
PR approved by at least one committer and no changes requested. |
|
PR approved by anyone and no changes requested. |
While doing sample analyze, the result of row count, null number and datasize need to multiply a coefficient based on the sample percent/rows. This pr is mainly to calculate the coefficient according to the sampled file size over total size.
While doing sample analyze, the result of row count, null number and datasize need to multiply a coefficient based on the sample percent/rows. This pr is mainly to calculate the coefficient according to the sampled file size over total size.
While doing sample analyze, the result of row count, null number and datasize need to multiply a coefficient based on the sample percent/rows. This pr is mainly to calculate the coefficient according to the sampled file size over total size.
While doing sample analyze, the result of row count, null number and datasize need to multiply a coefficient based on the sample percent/rows. This pr is mainly to calculate the coefficient according to the sampled file size over total size.
While doing sample analyze, the result of row count, null number and datasize need to multiply a coefficient based on the sample percent/rows. This pr is mainly to calculate the coefficient according to the sampled file size over total size.
While doing sample analyze, the result of row count, null number and datasize need to multiply a coefficient based on the sample percent/rows. This pr is mainly to calculate the coefficient according to the sampled file size over total size.
Further comments
If this is a relatively large or complex change, kick off the discussion at dev@doris.apache.org by explaining why you chose the solution you did and what alternatives you considered, etc...