GitHub user sijie opened a pull request:
https://github.com/apache/bookkeeper/pull/205
Improve ledger fence logic
Descriptions of the changes in this PR:
Problem:
When bookie receive a fence request and couldn't find any writable dirs
for the new index file, it will throw exception. This behavior can be improved,
because as long as ledger fence request be persisted in Journal, we can say the
fence request succeed. It should not depends on the success of flushing new
index file.
Solution:
- Add option to fall back to pick from all directories regardless of
writable or not when we getFileInfo for a new ledger
- Return success only when ledger fence request has been persisted in
Journal
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You can merge this pull request into a Git repository by running:
$ git pull https://github.com/sijie/bookkeeper improve_fencing_behavior
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/bookkeeper/pull/205.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #205
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commit 7ccee25a02c8be527cb9e2d9903911790fbf2249
Author: Yiming Zang <[email protected]>
Date: 2016-11-21T08:15:57Z
Improve ledger fence logic
Summary:
Problem:
When bookie receive a fence request and couldn't find any writable dirs
for the new index file, it will throw exception. This behavior can be improved,
because as long as ledger fence request be persisted in Journal, we can say the
fence request succeed. It should not depends on the success of flushing new
index file.
Bug fix:
- Add option to fall back to pick from all directories regardless of
writable or not when we getFileInfo for a new ledger
- Return success only when ledger fence request has been persisted in
Journal
Test Plan: Pass all unit tests
Reviewers: psu, jbull, fcuny, drusek, mpatidar, sijieg, lstewart
Reviewed By: sijieg, lstewart
Subscribers: #rb_ds-messaging
Differential Revision: https://phabricator.twitter.biz/D12978
JIRA Issues: PUBSUB-17855
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