Jiawei Wang has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/14600 )

Change subject: IMPALA-9109: Add top-k metadata loading ranking on catalogd UI
......................................................................


Patch Set 5:

(3 comments)

Thanks for the valid feedback!

I added max, 75, 95, 99, count in the new loading time ranking table. The 
ranking is sorted by maximum loading time by default. However, there might be a 
problem here because we only keep the capacity size to 100. For example, there 
might be case like a table has higher median loading time but has lower Maximum 
loading time which cannot make itself to the Top-100.

Users can sort them by other metrics in UI. Also, the more detailed metrics can 
be found in the metrics column. So I don't feel like we need to expose all of 
them.

http://gerrit.cloudera.org:8080/#/c/14600/4/common/thrift/JniCatalog.thrift
File common/thrift/JniCatalog.thrift:

http://gerrit.cloudera.org:8080/#/c/14600/4/common/thrift/JniCatalog.thrift@724
PS4, Line 724:   5: optional i64 median_table_loading_ns
> It'd be better to not just expose the median loading time. Since this is sh
Done


http://gerrit.cloudera.org:8080/#/c/14600/4/fe/src/main/java/org/apache/impala/catalog/Table.java
File fe/src/main/java/org/apache/impala/catalog/Table.java:

http://gerrit.cloudera.org:8080/#/c/14600/4/fe/src/main/java/org/apache/impala/catalog/Table.java@203
PS4, Line 203:
> Can we add more metrics so in the future we don't need to touch this part a
Done


http://gerrit.cloudera.org:8080/#/c/14600/4/www/catalog.tmpl
File www/catalog.tmpl:

http://gerrit.cloudera.org:8080/#/c/14600/4/www/catalog.tmpl@169
PS4, Line 169: Median Loading Time</th>
> We can show human readable time in this column, i.e. in the forms of 11m25s
Done



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I9305a867d7053cde9acc42dae6e47ee440f1a8bf
Gerrit-Change-Number: 14600
Gerrit-PatchSet: 5
Gerrit-Owner: Jiawei Wang <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Jiawei Wang <[email protected]>
Gerrit-Reviewer: Quanlong Huang <[email protected]>
Gerrit-Reviewer: Yongzhi Chen <[email protected]>
Gerrit-Comment-Date: Mon, 04 Nov 2019 22:42:36 +0000
Gerrit-HasComments: Yes

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