[kudu-CR] WIP disk failure: error-handling macros in blocks

["Andrew Wong (Code Review)" <ge...@cloudera.org>]

Hello Kudu Jenkins,

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

    http://gerrit.cloudera.org:8080/7030

to look at the new patch set (#15).

Change subject: WIP disk failure: error-handling macros in blocks
......................................................................

WIP disk failure: error-handling macros in blocks

This patch adds macros to trigger error-handling code in the event of
disk failure during block IO. Block- and container-level functions that
call env or cache functions (e.g. File::Append, FileCache::DeleteFile)
that may result in disk failure can now run callbacks that, in the
future, will fail and shutdown tablets in the failed directory,
preventing further IO to the disk.

Failures elswhere (e.g. when reading instance or tablet metadata) will
be handled in separate patches.

Disk failures are indicated by one of EIO, ENODEV, ENXIO, and EROFS,
although this list can be extended as needed in the future.

WIP: As failure handling relies on the addition of a handful of other
features, end-to-end testing of handling disk failure will come in a
later patch. This patch only serves to cover calls with macros.

This is part of a series of patches to handle disk failure. See
section 2.2 of:
https://docs.google.com/document/d/1zZk-vb_ETKUuePcZ9ZqoSK2oPvAAaEV1sjDXes8Pxgk/edit?usp=sharing

Change-Id: Ia03bfb711a1b022d7516f4adb37fe9fb28ec949c
---
M src/kudu/fs/error_manager.h
M src/kudu/fs/file_block_manager.cc
M src/kudu/fs/log_block_manager.cc
M src/kudu/tserver/ts_tablet_manager.cc
M src/kudu/util/status.h
5 files changed, 196 insertions(+), 69 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/30/7030/15
-- 
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Ia03bfb711a1b022d7516f4adb37fe9fb28ec949c
Gerrit-PatchSet: 15
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: Andrew Wong <aw...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Andrew Wong <aw...@cloudera.com>
Gerrit-Reviewer: David Ribeiro Alves <da...@gmail.com>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Tidy Bot
Gerrit-Reviewer: Todd Lipcon <to...@apache.org>