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HBase, mail # dev - Some suggestions for future features


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RE: Some suggestions for future features
Vladimir Rodionov 2012-06-05, 18:44
CompactionCallback API needs to be part of a Coprocessor API of course

Best regards,
Vladimir Rodionov
Principal Platform Engineer
Carrier IQ, www.carrieriq.com
e-mail: [EMAIL PROTECTED]

________________________________________
From: Vladimir Rodionov
Sent: Tuesday, June 05, 2012 11:19 AM
To: [EMAIL PROTECTED]
Subject: Some suggestions for future features

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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