HBASE-1876 DroppedSnapshotException when flushing memstore after a datanode dies; I added hdfs-630 to our bundled hadoop-hdfs.jar to underline its importance espeically for smaller clusters
hadoop/hbase/trunk/lib/hadoop-hdfs-0.21.0-dev-r836297-plusHDFS630.jar
hadoop/hbase/trunk/src/java/overview.html