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From Vladimir Rodionov <vrodio...@carrieriq.com>
Subject Some suggestions for future features
Date Tue, 05 Jun 2012 18:19:45 GMT

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
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: vrodionov@carrieriq.com

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