Jean-Daniel Cryans has submitted this change and it was merged.

Change subject: ksck: improve output for long-running ksck checksums
......................................................................


ksck: improve output for long-running ksck checksums

Checksumming a large (multi-TB) table can take many minutes. Previously, the
ksck output would be very quiet during that time, giving no indication as to
whether it was making progress or how much work might be remaining. This
addresses that by:

- passing back how many bytes and number of rows have been summed so
  far on a regular basis
- reporting progress every 5 seconds, including the above numbers

Along the way, I decided that our default timeout of 5 minutes was way too low
for typical table sizes, so bumped it to an hour. I also added more mock-based
test coverage of the checksum-scan code path.

Change-Id: I2a9962329570e8383087747d36cee9ad4fa60825
Reviewed-on: http://gerrit.cloudera.org:8080/3715
Tested-by: Kudu Jenkins
Reviewed-by: Jean-Daniel Cryans <jdcry...@apache.org>
---
M src/kudu/tools/ksck-test.cc
M src/kudu/tools/ksck.cc
M src/kudu/tools/ksck.h
M src/kudu/tools/ksck_remote-test.cc
M src/kudu/tools/ksck_remote.cc
M src/kudu/tools/ksck_remote.h
M src/kudu/tserver/tablet_server-test.cc
M src/kudu/tserver/tablet_service.cc
M src/kudu/tserver/tserver_service.proto
9 files changed, 179 insertions(+), 61 deletions(-)

Approvals:
  Jean-Daniel Cryans: Looks good to me, approved
  Kudu Jenkins: Verified



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Gerrit-MessageType: merged
Gerrit-Change-Id: I2a9962329570e8383087747d36cee9ad4fa60825
Gerrit-PatchSet: 3
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: Todd Lipcon <t...@apache.org>
Gerrit-Reviewer: Jean-Daniel Cryans <jdcry...@apache.org>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Mike Percy <mpe...@apache.org>
Gerrit-Reviewer: Todd Lipcon <t...@apache.org>

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