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Re: Schema Design Question - HBase - [mail # user]
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...Same here. HBase is generally good at honing in to a small (maybe 10-100m rows) continuous subset of an essentially unlimited dataset. If all you ever do is scanning _everything_ and then th...
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Author: lars hofhansl,
2013-05-01, 05:35
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Re: Read access pattern - HBase - [mail # user]
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...I do not want to be rude or anything... But how often we need to have this discussion? When you salt your rowkeys with say 10 salt values then for each read you need to fork of 10 read...
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Author: lars hofhansl,
2013-05-01, 05:12
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Re: Poor HBase map-reduce scan performance - HBase - [mail # user]
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...Your average row is 35k so scanner caching would not make a huge difference, although I would have expected some improvements by setting it to 10 or 50 since you have a wide 10ge pipe. ...
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Author: lars hofhansl,
2013-05-01, 05:01
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Re: Multi-CheckAnd... - HBase - [mail # user]
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...It's not far fetched to add a checkAndMutate method/rpc to HBase. Put, Delete, Increment (in trunk), and Append extend Mutation, so it would not be too hard to add. Could you file a jira and...
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Author: lars hofhansl,
2013-04-28, 03:34
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Re: HBase - prioritizing writes over reads? - HBase - [mail # user]
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...I would also add that if you need an "always available" store (as in you want A and P of CAP [1], and can sacrifice C), you might be better served with one of the DynamoDB inspired architect...
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Author: lars hofhansl,
2013-04-26, 00:18
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[ANNOUNCE] HBase 0.94.7 is available for download - HBase - [mail # user]
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...The HBase Team is pleased to announce the immediate release of HBase 0.94.7. Download it from your favorite Apache mirror [1]. HBase 0.94.7 is a bug fix release with a few performance ...
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Author: lars hofhansl,
2013-04-26, 00:06
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Re: Coprocessors - HBase - [mail # user]
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...It doesn't. Based on your query and key-layout it only scans subranges of the keyspace and these scans are parallelized across region servers. I'll let James explain more (if he's listening)...
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Author: lars hofhansl,
2013-04-25, 22:06
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Re: [VOTE] The 2nd hbase 0.94.7 release candidate is available for download - HBase - [mail # dev]
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...Thanks Stack. ________________________________ From: Stack To: HBase Dev List ; lars hofhansl Sent: Thursday, April 25, 2013 2:08 PM Subject: Re: [VOTE] The 2...
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Author: lars hofhansl,
2013-04-25, 21:55
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Re: Coprocessors - HBase - [mail # user]
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...You might want to have a look at Phoenix (https://github.com/forcedotcom/phoenix), which does that and more, and gives a SQL/JDBC interface. ________________________________ &n...
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Author: lars hofhansl,
2013-04-25, 21:54
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Re: [VOTE] The 2nd hbase 0.94.7 release candidate is available for download - HBase - [mail # dev]
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...Thanks J-D, Andy, and JM. Will make it official this afternoon, unless I see objections 'til then. ________________________________ From: Jean-Daniel Cryans To: "[E...
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Author: lars hofhansl,
2013-04-25, 20:11
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