Apache Accumulo File System Archive Example (Data Only)

This example archives file data into an Accumulo table. Files with duplicate data are only stored once. The example has the following classes:

This example is coupled with the dirlist example. See README.dirlist for instructions.

If you haven't already run the README.dirlist example, ingest a file with FileDataIngest.

$ ./bin/accumulo org.apache.accumulo.examples.simple.filedata.FileDataIngest instance zookeepers username password dataTable exampleVis 1000 $ACCUMULO_HOME/README

Open the accumulo shell and look at the data. The row is the MD5 hash of the file, which you can verify by running a command such as 'md5sum' on the file.

> scan -t dataTable

Run the CharacterHistogram MapReduce to add some information about the file.

$ bin/tool.sh lib/examples-simple*[^cs].jar org.apache.accumulo.examples.simple.filedata.CharacterHistogram instance zookeepers username password dataTable exampleVis exampleVis

Scan again to see the histogram stored in the 'info' column family.

> scan -t dataTable