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Re: Map Reduce with multiple scans - HBase - [mail # user]
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...Thanks for your answers. I ended up by extending org.apache.hadoop.hbase.mapreduce.TableInputFormat and overwriting the split method and passing it to the map reduce job the following way: &...
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Author: Paul van Hoven,
2013-02-27, 16:17
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Map Reduce with multiple scans - HBase - [mail # user]
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...My rowkeys look something like this: md5( date ) + md5( ip address ) So an example would be md5( "2013-02-08") + md5( "192.168.187.2") For one particular date I got several...
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Author: Paul van Hoven,
2013-02-26, 13:41
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Re: Question about filtering data - HBase - [mail # user]
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...Thank you for your answer. I applied the following filter object: Scan scan = new Scan( startRow, endRow ); Filter f = new SingleColumnValueFilter( Bytes.toBytes("CF"), Bytes.toByte...
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Author: Paul van Hoven,
2013-02-20, 18:37
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Question about filtering data - HBase - [mail # user]
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...Suppose I had the following data in a table: hbase(main):007:0> scan 'ToyDataTable' ROW &...
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Author: Paul van Hoven,
2013-02-20, 18:06
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Re: Scanning a row for certain md5hash does not work - HBase - [mail # user]
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...Sorry, I had a mistake in my rowkey generation. Thanks for reading! 2013/2/19 Paul van Hoven :...
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Author: Paul van Hoven,
2013-02-19, 19:13
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Scanning a row for certain md5hash does not work - HBase - [mail # user]
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...I'm currently reading a book about hbase (hbase in action by manning). In this book it is explained how to perform a scan if the rowkey is made out of a md5 hash (page 45 in the book). My ro...
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Author: Paul van Hoven,
2013-02-19, 18:46
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Re: Rowkey design question - HBase - [mail # user]
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...Yeah it worked fine. But as I understand: If I prefix my row key with something like md5-hash + timestamp then the rowkeys are probably evenly distributed but how would I p...
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Author: Paul van Hoven,
2013-02-19, 17:50
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Re: Rowkey design question - HBase - [mail # user]
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...Hey Tariq, thanks for your quick answer. I'm not sure if I got the idea in the seond part of your answer. You mean if I use a timestamp as a rowkey I should append a hash like this: &n...
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Author: Paul van Hoven,
2013-02-19, 16:24
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Rowkey design question - HBase - [mail # user]
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...Hi, I'm currently playing with hbase. The design of the rowkey seems to be critical. The rowkey for a certain database table of mine is: timestamp+ipaddress It looks ...
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Author: Paul van Hoven,
2013-02-19, 16:11
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Re: Table deleted after restart of computer - HBase - [mail # user]
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...I installed hbase via brew. brew install hadoop hbase pig hive Then I started hbase via start-hbase.sh command. Therefore I'm pretty sure it is a standalone version. ...
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Author: Paul van Hoven,
2013-02-19, 14:58
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