[kudu-CR](branch-1.2.x) KUDU-1899. Fix support for empty string keys

["Todd Lipcon (Code Review)" <ge...@cloudera.org>]

Hello David Ribeiro Alves, Kudu Jenkins,

I'd like you to reexamine a change.  Please visit

    http://gerrit.cloudera.org:8080/6178

to look at the new patch set (#2).

Change subject: KUDU-1899. Fix support for empty string keys
......................................................................

KUDU-1899. Fix support for empty string keys

We've never prevented users from inserting a row with "" as a key. However, a
faulty assertion in diskrowset.cc caused the tablet server to crash on flush in
this case.

This adds a new end-to-end test via the client which inserts, updates, and deletes
a row with a "" key. It caused a crash prior to this patch.

Change-Id: I779f25afe6d39d91067b1e7c1238797ec2ac0295
Reviewed-on: http://gerrit.cloudera.org:8080/6163
Tested-by: Kudu Jenkins
Reviewed-by: David Ribeiro Alves <dr...@apache.org>
(cherry picked from commit c11a315e73a20211caf71f2b3797e71af8449af4)
---
M src/kudu/client/client-test.cc
M src/kudu/tablet/diskrowset.cc
2 files changed, 77 insertions(+), 2 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/78/6178/2
-- 
To view, visit http://gerrit.cloudera.org:8080/6178
To unsubscribe, visit http://gerrit.cloudera.org:8080/settings

Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I779f25afe6d39d91067b1e7c1238797ec2ac0295
Gerrit-PatchSet: 2
Gerrit-Project: kudu
Gerrit-Branch: branch-1.2.x
Gerrit-Owner: Todd Lipcon <to...@apache.org>
Gerrit-Reviewer: David Ribeiro Alves <dr...@apache.org>
Gerrit-Reviewer: Jean-Daniel Cryans <jd...@apache.org>
Gerrit-Reviewer: Kudu Jenkins