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RE: How to adjust hbase settings when too many store files? - HBase - [mail # user]
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...Also check what is your heap size of RS? When you say hTable.put(), how many such threads are there? What is your region size? Is your regions splitting continuously do to heavy ...
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Author: Ramkrishna.S.Vasudevan,
2012-10-29, 06:05
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RE: Best technique for doing lookup with Secondary Index - HBase - [mail # user]
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...Yes we can do this, but for it to happen you may have to have your custom load balancer which will help you in getting the collocation. Regards Ram ...
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Author: Ramkrishna.S.Vasudevan,
2012-10-26, 14:33
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RE: Best technique for doing lookup with Secondary Index - HBase - [mail # user]
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...No... suppose your Region A and Region B of different tables are collocated on same RS then from the coprocessor environment variable you can get access to the RS. call puts or gets. T...
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Author: Ramkrishna.S.Vasudevan,
2012-10-26, 08:13
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RE: Best technique for doing lookup with Secondary Index - HBase - [mail # user]
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...Yes you can do this.. May be the same mapper you can do a put for table "B". This was how we have tried loading data to another table by using the main table "A" Puts. Now ...
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Author: Ramkrishna.S.Vasudevan,
2012-10-26, 04:20
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RE: How do I test SampleRegionWALObserver? - HBase - [mail # user]
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...The WALObserver should be configured under Hbase.coprocessor.wal.classes. I can see that you have done the config under region.classes. Change this and it should work :) Re...
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Author: Ramkrishna.S.Vasudevan,
2012-10-25, 12:05
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RE: Best technique for doing lookup with Secondary Index - HBase - [mail # user]
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...Just out of curiosity, what is rowkey B here? How is the startRow determined for every query ? Regards Ram ...
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Author: Ramkrishna.S.Vasudevan,
2012-10-25, 05:16
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RE: HRegionInfo returns empty values. - HBase - [mail # user]
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...Hi Henry When you have only one region there is no specific start and end key for it. They are just empty bytes. Do you want to know the first row and the last row in that single...
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Author: Ramkrishna.S.Vasudevan,
2012-10-23, 04:32
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RE: HRegionInfo returns empty values. - HBase - [mail # user]
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...What is your need? You want to scan the rows i.e data in the table? Or you want to start and endkeys. Actually for single region just empty bytes represent the start and endkey. ...
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Author: Ramkrishna.S.Vasudevan,
2012-10-19, 09:07
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RE: HRegionInfo returns empty values. - HBase - [mail # user]
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...Can you tell me how the splitkeys are formed when the table was created? Or there are no splits at all for your table? If there are no splits then you will get empty start and en...
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Author: Ramkrishna.S.Vasudevan,
2012-10-19, 08:51
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RE: Unable to add co-processor to table through HBase api - HBase - [mail # user]
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...Ok Anil.. Not a problem.. My intention was to just see if the api was working during createtable so that it will help you. Regards Ram ...
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Author: Ramkrishna.S.Vasudevan,
2012-10-19, 05:54
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