hadoop/hadoop-hdfs-project/hadoop-hdfs/CHANGES.HDFS-3077.txt

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Changes for HDFS-3077 branch.
This will be merged into the main CHANGES.txt when the branch is merged.
HDFS-3077. Quorum-based protocol for reading and writing edit logs. Contributed by Todd Lipcon based on initial work from Brandon Li and Hari Mankude.
HDFS-3694. Fix getEditLogManifest to fetch httpPort if necessary (todd)
HDFS-3692. Support purgeEditLogs() call to remotely purge logs on JNs (todd)
HDFS-3693. JNStorage should read its storage info even before a writer becomes active (todd)
HDFS-3725. Fix QJM startup when individual JNs have gaps (todd)
HDFS-3741. Exhaustive failure injection test for skipped RPCs (todd)
HDFS-3773. TestNNWithQJM fails after HDFS-3741. (atm)
HDFS-3793. Implement genericized format() in QJM (todd)
HDFS-3795. QJM: validate journal dir at startup (todd)
HDFS-3798. Avoid throwing NPE when finalizeSegment() is called on invalid segment (todd)
HDFS-3799. QJM: handle empty log segments during recovery (todd)
HDFS-3797. QJM: add segment txid as a parameter to journal() RPC (todd)