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Re: thrift with filters - HBase - [mail # user]
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...Thanks for the update Andrew. I'll keep an eye out for updates. Jon On Fri, Oct 19, 2012 at 4:39 PM, Andrew Purtell wrote: ...
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Author: Jonathan Bishop,
2012-10-19, 23:51
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thrift with filters - HBase - [mail # user]
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...Hi, Taking a look at the thrift interface to hbase and I am having a hard time finding any way to set the "filterString" for scans. Anyone know how to do this? Thanks, Jon ...
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Author: Jonathan Bishop,
2012-10-19, 22:56
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Re: more regionservers does not improve performance - HBase - [mail # user]
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...Thanks Matt, I have 10 regions per regionserver (100 splits over 10 regionservers), and yes they all seem to almost stop at the same time. I'll try splitting the table into fewer regio...
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Author: Jonathan Bishop,
2012-10-15, 02:42
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Re: more regionservers does not improve performance - HBase - [mail # user]
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...Matt, Yes, I did. What I observed is that the map job proceeds about 3-4x faster for a while. But then I observed long pauses partway through the job, and overall run time was on...
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Author: Jonathan Bishop,
2012-10-14, 15:48
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Re: more regionservers does not improve performance - HBase - [mail # user]
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...Suraj, I bumped my regionservers all the way up to 32g from 8g. They are running on 64g and 128g machines on our cluster. Unfortunately, the machines all have various states of loading...
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Author: Jonathan Bishop,
2012-10-13, 15:58
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Re: more regionservers does not improve performance - HBase - [mail # user]
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...Suraj, Yes, things seem to slow down, but this is a noisy cluster with other jobs running so it is hard to tell. Certainly, I did see speed ups when going from 1 to 2, and 2 to 4 regio...
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Author: Jonathan Bishop,
2012-10-13, 15:55
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Re: more regionservers does not improve performance - HBase - [mail # user]
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...Kevin, Sorry, I am fairly new to HBase. Can you be specific about what settings I can change, and also where they are specified? Pretty sure I am not hotspotting, and increasing ...
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Author: Jonathan Bishop,
2012-10-12, 19:15
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Re: more regionservers does not improve performance - HBase - [mail # user]
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...Suraj, Thanks for the quick reply. I tried various values of hbase.hstore.blockingStoreFiles and hbase.hregion.memstore.block.multiplier, but this did not have any effect I could...
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Author: Jonathan Bishop,
2012-10-12, 19:07
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RE: more regionservers does not improve performance - HBase - [mail # user]
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...Pankaj, Thanks for the reply. Actually, I am using MD5 hashing to evenly spread the keys among the splits, so I don’t believe there is any hotspot. In fact, when I monitory...
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Author: Jonathan Bishop,
2012-10-12, 06:34
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more regionservers does not improve performance - HBase - [mail # user]
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...Hi, I am running a MR job with 40 simultaneous mappers, each of which does puts to HBase. I have ganged up the puts into groups of 1000 (this seems to help quite a bit) and also made s...
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Author: Jonathan Bishop,
2012-10-12, 00:08
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