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Re: HBase secondary index performance - HBase - [mail # user]
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...2010/9/5 Murali Krishna. P : he idea of timestamp r. . Real insert rate will depend on size of row, size of write buffer etc. In case of simple row with one long per row i got 30...
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Author: Andrey Stepachev,
2010-09-05, 18:24
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Re: HBase secondary index performance - HBase - [mail # user]
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...2010/9/5 Samuru Jackson : 3 node "cluster", 16Gb core2duo. sas raid10. It is not and indexer, It is abstraction around HTable, which does put plus additional puts (as described b...
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Author: Andrey Stepachev,
2010-09-05, 18:12
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Re: HBase secondary index performance - HBase - [mail # user]
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...2010/9/3 Murali Krishna. P : changing every day. So, probably In case of custom indexing you can use timestamps to check, that index record still valid. (or ever simply recheck e...
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Author: Andrey Stepachev,
2010-09-04, 22:23
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Re: HBase secondary index performance - HBase - [mail # user]
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...First, check that you connection not in autoflash mode. Second, you can think about custom indexing instead of using indexedtable. In my experience custom idexing (especially if data doesn't...
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Author: Andrey Stepachev,
2010-09-02, 18:44
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Re: Scanning half a key or value in HBase - HBase - [mail # user]
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...This is another case, because this is not a prefix scan. This is inclusive scan. In this case of course you should use some techniques, like indexing or full scan with filter. But this is no...
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Author: Andrey Stepachev,
2010-08-24, 20:36
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Re: Scanning half a key or value in HBase - HBase - [mail # user]
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...If my table is huge do i get full scan? I you want to get good performance on random read you really need start and stop keys. PrefixFIlters are usable in compound filters. If you want only ...
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Author: Andrey Stepachev,
2010-08-23, 19:10
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Re: Scanning half a key or value in HBase - HBase - [mail # user]
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...Really, solution will be (if I understand correctly), to set start key to "123".getBytes(). and stop key set to "124".getBytes(). (stop key can be produced by incrementing last byte in start...
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Author: Andrey Stepachev,
2010-08-23, 19:06
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Re: Scanning half a key or value in HBase - HBase - [mail # user]
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...2010/8/17 Ryan Rawson : Why? It will work for any byte array, if we want to prefix scan. And no matter, what key encoding we use. If we look at first email question, we see '%', ...
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Author: Andrey Stepachev,
2010-08-18, 05:31
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Re: Scanning half a key or value in HBase - HBase - [mail # user]
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...Use scan where start key is itself as bytearray, and stop key is with last byte in bytearray + 1. example abc% should be scan(abc, abd) 2010/8/17 Michelan Arendse : n...
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Author: Andrey Stepachev,
2010-08-17, 12:59
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Re: Questions about Columns and Families - HBase - [mail # user]
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...2010/8/16 Samuru Jackson : Wide family can have poor scalability, because table splits on key ranges. If you will have very wide family it will live on 1 region server and doesnt' slit...
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Author: Andrey Stepachev,
2010-08-17, 05:16
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