Andrew Wong has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/8978 )

Change subject: KUDU-2202: support for removing data directories (take two)
......................................................................


Patch Set 7:

(1 comment)

With the metadata dir patch in, it's probably worth at least discussing (and 
maybe testing) the ways in which affects the remove tool's behavior. I don't 
think much changes, but something like:

- Metadata dirs in WAL dir: removing any data dir is fine. No configuration 
changes necessary.
- Metadata dirs in the first data dir: This is also fine, but further 
deployments must now specify the metadata dir, as it is no longer referenced in 
fs_data_dirs.
- Metadata dirs in any other directory: same as the WAL case.

http://gerrit.cloudera.org:8080/#/c/8978/7/src/kudu/fs/fs_manager.cc
File src/kudu/fs/fs_manager.cc:

http://gerrit.cloudera.org:8080/#/c/8978/7/src/kudu/fs/fs_manager.cc@347
PS7, Line 347:   if (!missing_roots.empty() && !opts_.read_only) {
> huh, is this an existing bug? if you use an fs_manager tool and pass an ext
missing_roots will only be non-empty if opts.update_on_disk is true (as per 
L292). This should probably be in a comment.



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Iacb650115bcdf055542ef2777641a3201fc8e30b
Gerrit-Change-Number: 8978
Gerrit-PatchSet: 7
Gerrit-Owner: Adar Dembo <[email protected]>
Gerrit-Reviewer: Adar Dembo <[email protected]>
Gerrit-Reviewer: Andrew Wong <[email protected]>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Todd Lipcon <[email protected]>
Gerrit-Comment-Date: Thu, 18 Jan 2018 22:44:49 +0000
Gerrit-HasComments: Yes

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