Grant Henke has posted comments on this change.

Change subject: WIP: KUDU-463. Add checksumming to cfile
......................................................................


Patch Set 6:

(4 comments)

http://gerrit.cloudera.org:8080/#/c/6630/6/src/kudu/cfile/cfile_reader.cc
File src/kudu/cfile/cfile_reader.cc:

Line 446:     data_size -= checksum_size;
> careful of underflow
Done


Line 472:     if (block.size() != data_size && checksum.size() != 
checksum_size) {
> ||
Done


http://gerrit.cloudera.org:8080/#/c/6630/6/src/kudu/util/env.h
File src/kudu/util/env.h:

Line 21: #include <sys/uio.h>
> Would prefer not to leak this sort of platform-specific thing outside of en
I agree. This was just a rough patch to see if the approach and use of preadv 
made sense before polishing.  See my comment below as well.


Line 390:   virtual Status ReadV(uint64_t offset, Slice** results,
> Would std::vector<Slice>* be more intuitive for 'results'? That is, ReadV()
I agree that a vector with all the combined parameters would be better in the 
end. Something that has slice, scratch, and length so we don't need to expose 
iovec. I planned to do this, I just posted this super rough version to see if 
the approach and use of preadv made sense before spending the time polishing, 
testing, etc.


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Gerrit-MessageType: comment
Gerrit-Change-Id: I6756834cd7f27af258797a3654a95244abeb0976
Gerrit-PatchSet: 6
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: Grant Henke <[email protected]>
Gerrit-Reviewer: Adar Dembo <[email protected]>
Gerrit-Reviewer: Grant Henke <[email protected]>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Tidy Bot
Gerrit-Reviewer: Todd Lipcon <[email protected]>
Gerrit-HasComments: Yes

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