FLUME-2262. Log4j Appender should use timeStamp field not getTimestamp, which was not available in older log4j versions.

(Brock Noland via Hari Shreedharan)
FLUME-2238. Provide option to configure worker threads in NettyAvroRpcClient

(Cameron Gandevia via Hari Shreedharan)
FLUME-2209. AsyncHBaseSink will never recover if the column family does not exists for the first start.

(Ashish Paliwal via Hari Shreedharan)