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From Todd Lipcon <t...@cloudera.com>
Subject [VOTE] Merge HDFS-3077 (QuorumJournalManager) branch to trunk
Date Tue, 25 Sep 2012 23:02:59 GMT
Dear fellow HDFS developers,

Per my email thread last week ("Heads up: merge for QJM branch soon"
at http://markmail.org/message/vkyh5culdsuxdb6t) I would like to
propose merging the HDFS-3077 branch into trunk. The branch has been
active since mid July and has stabilized significantly over the last
two months. It has passed the full test suite, findbugs, and release
audit, and I think it's ready to merge at this point.

The branch has been fully developed using the standard
'review-then-commit' (RTC) policy, and the design is described in
detail in a document attached to HDFS-3077 itself. The code itself has
been contributed by me, Aaron, and Eli, but I'd be remiss not to also
acknowledge the contributions to the design from discussions with
Suresh, Sanjay, Henry Robinson, Patrick Hunt, Ivan Kelly, Andrew
Purtell, Flavio Junqueira, Ben Reed, Nicholas, Bikas, Brandon, and
others. Additionally, special thanks to Andrew Purtell and Stephen Chu
for their help with cluster testing.

This initial VOTE is to merge only into trunk, but, following the
pattern of automatic failover, I expect to merge it into branch-2
within a few weeks as well. The merge to branch-2 should be clean, as
both I and Andrew Purtell have been testing on branch-2-derived
codebases in addition to trunk.

Please cast your vote by EOD Friday 9/29. Given that the branch has
only had small changes in the last few weeks, and there was a "heads
up" last week, I trust this should be enough time for committers to
cast their votes. Per our by-laws, we need a minimum of three binding
+1 votes from committers.

I will start the voting with my own +1.

Todd Lipcon
Software Engineer, Cloudera

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