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Re: HAcid: multi-row transactions in HBase - HBase - [mail # user]
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...Interesting. So how do you manage the transaction? On the client or on the cluster? On Oct 1, 2012, at 6:12 PM, de Souza Medeiros Andre wrote: on. ACID transac...
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Author: Michael Segel,
2012-10-01, 23:16
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Re: Regarding rowkey - HBase - [mail # user]
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...MD5 should work, SHA-1 while theoretically may have a collision, it hasn't been found. Then there's SHA-2... I don't disagree with your assertion, however... it causes the ...
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Author: Michael Segel,
2012-09-12, 16:49
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Re: Optimizing table scans - HBase - [mail # user]
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...How much memory do you have? What's the size of the underlying row? What does your network look like? 1GBe or 10GBe? There's more to it, and I think that you'll find that Y...
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Author: Michael Segel,
2012-09-12, 13:04
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Re: Regarding rowkey - HBase - [mail # user]
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...I wouldn't 'prefix' the hash to the key, but actually replace the key with a hash and store the unhashed key in a column. But that's a different discussion. In a nutshell...
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Author: Michael Segel,
2012-09-12, 12:46
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Re: Doubt in performance tuning - HBase - [mail # user]
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...Well, Lets actually skip a few rounds of questions... and start from the beginning. What does your physical cluster look like? On Sep 10, 2012, at 12:40 PM, Ramasu...
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Author: Michael Segel,
2012-09-10, 19:13
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Re: Tracking down coprocessor pauses - HBase - [mail # user]
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...On Sep 10, 2012, at 12:32 PM, Tom Brown wrote: Could you expand on this? On the surface, this doesn't sound like a very good idea. ...
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Author: Michael Segel,
2012-09-10, 18:45
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Re: Key formats and very low cardinality leading fields - HBase - [mail # user]
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...Uhm... This isn't very good. In terms of inserting, you will hit a single or small subset of regions. This may not be that bad if you have enough data and the rows ...
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Author: Michael Segel,
2012-09-05, 03:04
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Re: Key formats and very low cardinality leading fields - HBase - [mail # user]
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...Eric, So here's the larger question... How does the data flow in to the system? One source at a time? The second field. Is it sequential? If not sequential, is it going to...
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Author: Michael Segel,
2012-09-04, 18:03
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Re: Key formats and very low cardinality leading fields - HBase - [mail # user]
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...I think you have to understand what happens as a table splits. If you have a composite key where the first field has the value between 0-9 and you pre-split your table, you will ...
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Author: Michael Segel,
2012-09-04, 17:34
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Re: Reading in parallel from table's regions in MapReduce - HBase - [mail # user]
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...I think the issue is that you are misinterpreting what you are seeing and what Doug was trying to tell you... The short simple answer is that you're getting one split per region....
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Author: Michael Segel,
2012-09-04, 16:41
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