After ingesting a few million files using the method in the Accumulo File System Archive (http://accumulo.apache.org/1.4/examples/dirlist.html) we ran into a problem reading the information back out of Accumulo. I forget the error but I resolved it by using DigestUtils.md5hex instead of Digestutils.md5 which stored the md5 as hex string instead of a binary value. We did not dig into what caused the error we just side-stepped it.
On Wed, Dec 4, 2013 at 11:37 PM, Chris Carrino <[email protected]>wrote: > The org.apache.accumulo.examples.simple.filedata.FileDataIngest class > generates LOWERCASE hash keys via the hexString() method, and uses them as > row ID's for storing file chunks in Accumulo. Note that NIST uses > UPPERCASE hash keys in the Reference Data Set (RDS). See > http://www.nsrl.nist.gov/ for the RDS. Both approaches are valid since > the hexadecimal representation of the key is not case sensitive - but make > sure you normalize to one case if you are comparing the keys generated in > the FileDataIngest class to the RDS keys. >
