At least get recommendation into 0.96 doc and some numbers running w/ this hdfs feature enabled.
Flag in the mutations to indicate asynchronous write to WAL
Put, Delete, Increment, Result, all all HBase M/R classes still implement/use Writable
Fix hsync semantics
[Replication] Inconsistency between Memstore and WAL may result in data in remote cluster that is not in the origin
Support hsync in HDFS
Configurable default durability for synchronous WAL
Recheck the design and implementation of FSYNC_WAL durability for WAL
Allow parallel HDFS writes for HLogs.
Remove Reflection based Hadoop abstractions