1. Custom Key, KeyValue, Row Comparators (per HTable). I went through the 0.92
API and it seems that adding this feature is going to be hard task. There are a
lot of places all over HBase source code
where KeyValue static class members are accessed directly.
2.Compaction callback. Can be HTable as well. Something like this one:
public interface CompactionCallback<KeyValue>
{
public void preCompact(KeyValue kv, CompactionContext ctx)
}
Developer can :
a. Modify KeyValue before compaction
or
b. Make HBase to delete row entirely
3. Row prefix delete operation - Delete all rows which starts with a 'prefix'
There are a lot of use case where these features would be very helpful. What do
you think?
Best regards,
Vladimir Rodionov
Principal Platform Engineer
Carrier IQ, www.carrieriq.com
e-mail: [email protected]
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