Adar Dembo has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/10968 )

Change subject: schema: add is_deleted virtual column
......................................................................


Patch Set 10:

(2 comments)

> Nice, looks like not too much boilerplate!

Check out the MRS patch that follows; there's a bit of a gotcha in that there's 
no mandated nullability or read-default.

http://gerrit.cloudera.org:8080/#/c/10968/10/src/kudu/common/schema.h
File src/kudu/common/schema.h:

http://gerrit.cloudera.org:8080/#/c/10968/10/src/kudu/common/schema.h@881
PS10, Line 881:   static const char* kReservedColNamePrefix;
> No longer needed?
Done


http://gerrit.cloudera.org:8080/#/c/10968/10/src/kudu/common/types.h
File src/kudu/common/types.h:

http://gerrit.cloudera.org:8080/#/c/10968/10/src/kudu/common/types.h@625
PS10, Line 625:     return DataTypeTraits<BOOL>::name();
> Should this be "is_deleted"?  The derived types above don't delegate to the
It was at first, but that led to a row dump that looked like this:

  (string key="row", uint32 val=5, is_deleted is_deleted=true)

I thought that was confusing and ugly (granted in part because I named the 
column 'is_deleted'), so I added this bit of delegation.



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I56eb1d44ba8bfbd76d8bb794b8076b695782939e
Gerrit-Change-Number: 10968
Gerrit-PatchSet: 10
Gerrit-Owner: Adar Dembo <[email protected]>
Gerrit-Reviewer: Adar Dembo <[email protected]>
Gerrit-Reviewer: Dan Burkert <[email protected]>
Gerrit-Reviewer: Grant Henke <[email protected]>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Mike Percy <[email protected]>
Gerrit-Reviewer: Tidy Bot
Gerrit-Reviewer: Todd Lipcon <[email protected]>
Gerrit-Comment-Date: Thu, 02 Aug 2018 04:02:09 +0000
Gerrit-HasComments: Yes

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