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Re: Maximizing throughput - HBase - [mail # user]
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...I've done similar work couple of months ago. Start by sharing more details on your program, hbase setup, and the way you measure network and disk bottlenecks. Also, have you isolated n...
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Author: Asaf Mesika,
2013-01-11, 13:03
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Re: HBase - Secondary Index - HBase - [mail # user]
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...I guess one reason is the the amount of data traveling. In your design, you have to query a secondary index table, read all the matched original table row keys, send them back to the client,...
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Author: Asaf Mesika,
2013-01-08, 23:00
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Re: Tune MapReduce over HBase to insert data - HBase - [mail # user]
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...Start by testing HDFS throughput by doing s simple copyFromLocal using Hadoop command line shell (bin/hadoop fs -copyFromLocal pathTo8GBFile /tmp/dummyFile1). If you have 1000Mbit/sec networ...
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Author: Asaf Mesika,
2013-01-08, 19:01
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Re: Storing images in Hbase - HBase - [mail # user]
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...What's the penalty performance wise of saving a very large value in a KeyValue in hbase? Splits, scans, etc. Sent from my iPad On 6 בינו 2013, at 22:12, Andrew Purtell wrot...
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Author: Asaf Mesika,
2013-01-06, 20:28
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Re: Fastest way to find is a row exist? - HBase - [mail # user]
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...Why not write your own filter class which you can initialize with a set of keys to search for. The HTable on the client side will split the keys based on row keys so it will be sent to the r...
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Author: Asaf Mesika,
2013-01-06, 20:27
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Re: reginoserver's log analysis? - HBase - [mail # user]
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...When I encountered this error it was caused by slow network which caused hdfs to be slow which caused flush to take more time thus blocking updates occurred. Sent from my iPhone ...
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Author: Asaf Mesika,
2013-01-03, 17:37
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Re: 0.94.3 in Central (Maven) - HBase - [mail # user]
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...I've looked for here in Maven Central (http://repo1.maven.org/maven2/org/apache/hbase/hbase/) but it's not there. Also, the Apache Maven Repository (https://repository.apache.org) contains t...
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Author: Asaf Mesika,
2013-01-02, 19:50
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Re: How to use substring in Rowkey - HBase - [mail # user]
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...You can define the StartKey of your scan object to be the customer number (i.e. the prefix of your rowkey) Define the end key to be the same but append a zero byte at the end to signify incl...
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Author: Asaf Mesika,
2012-12-27, 10:07
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Re: MR missing lines - HBase - [mail # user]
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...Did you check the returned array of the delete method to make sure all records sent for delete have been deleted? Sent from my iPhone On 16 בדצמ 2012, at 14:52, Jean-Marc Spaggia...
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Author: Asaf Mesika,
2012-12-16, 16:28
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Re: How to design a data warehouse in HBase? - HBase - [mail # user]
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...Here's my take on this matter: In the current situation, there isn't any good solution to the data warehousing solution you want in large scale. Impala and Drill are both projects that...
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Author: Asaf Mesika,
2012-12-15, 02:14
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