Very rough prototype of wrapper that allows interoperability between HBase table mappers and ordinary mappers over ARC files. Lifted mostly from ChainMapper implementation, code version in CDH 4.7
Implemented ArcRecordWritable.
Both the Jwat and Wac versions of ExtractLinks gives the same exact output.
Minor refactoring, revised counters.
Switched ExtractSiteLinks and InvertAnchorText over to WacArcInputFormat; link structure the same, anchor text results better due to switch from ISO-8859-1 to UTF-8 decoding of pages.
WacArcInputFormat now generates ArcRecordWritables.
Merge branch 'working' into table-wrapper
Refactored WacMapReduceHBaseWrapperDemo, now takes advantage of TableChainMapper to reuse mapper for HDFS ARC data.
Fixed issues #86, #85, #74

Issue #86: Move link extraction code over to using new WacArcInputFormat
Issue #85: Writable container for ARCRecord
Issue #74: TableMapper wrapper for interoperability between HBase vs. processing (W)ARC data