> After creating the bitmap indexes, the '_bitmaps' field of all the records > are similar and indicate an array as follows;
This is a direct deserialized object of EWAHBitMap (writeInt(), writeLong() as a sequence of arrays) https://github.com/lemire/javaewah/blob/master/src/main/java/com/googlecode/javaewah/EWAHCompressedBitmap.java#L608 I really wish it was a bit more robust to read/use, but the bitmaps are more of an internal structure org.apache.hadoop.hive.ql.index.bitmap.BitmapObjectOutput; with no real docs. Cheers, Gopal
