[kudu-CR] disk failure: coordinate fs error handling

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

Hello Kudu Jenkins,

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

    http://gerrit.cloudera.org:8080/7029

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

Change subject: disk failure: coordinate fs error handling
......................................................................

disk failure: coordinate fs error handling

I/O errors are spawned when calls to env functions fail. The response to
these errors may vary and may span many layers of abstraction.

For instance, if an EIO were triggered while writing a block, one
response might be to shut down the tablet whose operation just failed.
In order to do this without messing up the layering, a new entity, the
FsErrorManager is added to coordinate error handling.

Callbacks are registered with the FsErrorManager as responses to errors,
and callers to at-risk functions trigger these callbacks as errors are
spawned.

Change-Id: Ib3169deada702c527b70fabf9d2223364f9a9ea6
---
M src/kudu/fs/block_manager-test.cc
M src/kudu/fs/block_manager.h
A src/kudu/fs/error_manager.h
M src/kudu/fs/file_block_manager.cc
M src/kudu/fs/file_block_manager.h
M src/kudu/fs/fs-test-util.h
M src/kudu/fs/fs_manager.cc
M src/kudu/fs/fs_manager.h
M src/kudu/fs/log_block_manager.cc
M src/kudu/fs/log_block_manager.h
M src/kudu/master/sys_catalog.cc
M src/kudu/tserver/ts_tablet_manager.cc
M src/kudu/tserver/ts_tablet_manager.h
13 files changed, 240 insertions(+), 27 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/29/7029/2
-- 
To view, visit http://gerrit.cloudera.org:8080/7029
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Ib3169deada702c527b70fabf9d2223364f9a9ea6
Gerrit-PatchSet: 2
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: Andrew Wong <aw...@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>