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Re: scan performance improvement - HBase - [mail # user]
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...Great , thank you for the explanation. my table schema is: {NAME => 'URLs_sanity', FAMILIES => [{NAME => 'gs', VERSIONS => '1', CO...
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Author: Oleg Ruchovets,
2010-11-11, 13:30
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Re: scan performance improvement - HBase - [mail # user]
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...Yes , I thought about large number , so you said it depends on block size. Good point. I have one recored ~ 4k , block size is: dfs.block.size 268435456 &nbs...
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Author: Oleg Ruchovets,
2010-11-11, 11:55
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scan performance improvement - HBase - [mail # user]
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...Hi , To improve client performance I changed hbase.client.scanner.caching from 1 to 50. After running client with new value( hbase.client.scanner.caching from = 50 ) it di...
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Author: Oleg Ruchovets,
2010-11-11, 11:15
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Re: Bulk Load Sample Code - HBase - [mail # user]
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...Hi , Am I write that version hbase 20.X supports bulk load only in case data has ONE column family? My question is : Does latest (or any other) version support bu...
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Author: Oleg Ruchovets,
2010-11-10, 15:57
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Re: Best Way to Insert data into Hbase using Map Reduce - HBase - [mail # user]
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...Hi , Do you use HTablePool? Changing the code to using HBasePool gives me significat performance benefit. HBaseConfiguration conf = new HBaseConfiguration(); HTablePool pool = n...
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Author: Oleg Ruchovets,
2010-11-09, 10:32
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Re: Hbase insertion process cause to region server down. - HBase - [mail # user]
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...As Jonathan said it is normal , I still need to do more tests to be sure that I hasn't lost the inserted data. I paid attention that I got this exceptions during compaction &nb...
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Author: Oleg Ruchovets,
2010-11-09, 09:20
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Hbase insertion process cause to region server down. - HBase - [mail # user]
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...Hi , I run map/reduce job which from reducers writes to hbase. I have to write 8-9 million raws. My environment: 5 servers dual core , 8G ram. HDFS -- 9TB &n...
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Author: Oleg Ruchovets,
2010-11-08, 15:52
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Re: Scanner call crashed regionserver under load - HBase - [mail # user]
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...Hi , Can you please provide more details : what do you mean elease server-side resources? I get the similar Issue and the only what I do is return HTable to the &nb...
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Author: Oleg Ruchovets,
2010-11-07, 18:43
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Re: scan specific hbase region - HBase - [mail # user]
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...Great , thank you. On Wed, Oct 20, 2010 at 3:56 PM, Matthew LeMieux wrote: * /*** * * Apply the specified server-side filter when performing the S...
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Author: Oleg Ruchovets,
2010-10-20, 16:03
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scan specific hbase region - HBase - [mail # user]
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...Hi , I am running hbase scan on daily basis. HBase table become bigger and as a result it takes to more time to scan it , but actually I don't need to scan all the table....
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Author: Oleg Ruchovets,
2010-10-20, 10:24
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