Yes, the row is the only "index" over the data.
You can limit data from a table based on column family (or column family
and qualifier), but it's typically less efficient than reads over the
row. You can use the fetchColumnFamily or fetchColumn methods on
(Batch)Scanner.
If you use locality groups[1], you can get more efficient reads over
columns in a locality group.
[1] https://accumulo.apache.org/notable_features.html#locality-groups
[email protected] wrote:
HI
Queries in accumulo mode can only be based on the rowkey or a full table
scan query? There is no other way? For example, I think according to query the
value of a Family Qualifier?
[email protected]
