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Re: hbase shell snippet for "get" ing records with binary keys - HBase - [mail # user]
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...Sorry, function should be def fetch(table, id, args = {}) get table, String.from_java_bytes(Bytes.toBytes(id)), args end...
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Author: Andrey Stepachev,
2010-08-11, 12:40
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Re: hbase shell snippet for "get" ing records with binary keys - HBase - [mail # user]
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...And of course, you can use the Power of Ruby: type in shell: def fetch(table, id, args = {}) get table, String.from_java_bytes(Writables.getBytes(id)), args end &nbs...
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Author: Andrey Stepachev,
2010-08-11, 12:39
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Re: Run MR job when my data stays in hbase? - HBase - [mail # user]
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...2010/7/19 elton sky : Look at org.apache.hadoop.hbase.mapreduce package in hbase sources and as real example: org.apache.hadoop.hbase.mapreduce.RowCounter...
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Author: Andrey Stepachev,
2010-07-19, 13:27
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Re: Is it safe to use timestamps (or versions) to load old values. - HBase - [mail # user]
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...Thanks for the link. It is very good news. 2010/7/15 Jonathan Gray : cently a great blog post written about it....
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Author: Andrey Stepachev,
2010-07-15, 18:32
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Re: Is it safe to use timestamps (or versions) to load old values. - HBase - [mail # user]
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...Thanks Angus :). But if it true, that i can get rid from version in qualifier (as posted before) it will be huge api simplification (my internal api), because my qualifier ver sions du...
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Author: Andrey Stepachev,
2010-07-15, 09:39
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Re: Is it safe to use timestamps (or versions) to load old values. - HBase - [mail # user]
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...Do i understand correct, that if i do: put('table', 'family', 'qual', 'value1', asTimestamp('2009-01-01')) put('table', 'family', 'qual', 'value2', now()) put('table', 'family', 'qual'...
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Author: Andrey Stepachev,
2010-07-15, 09:34
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Re: Is it safe to use timestamps (or versions) to load old values. - HBase - [mail # user]
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...Thanks for reply. But it is huge data load, and checkAndPut use get internally. It leads to significant slowdown (70k records per host vs 0.4k records per host). 2010/7/15 Angus He : ...
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Author: Andrey Stepachev,
2010-07-15, 09:31
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Re: Is it safe to use timestamps (or versions) to load old values. - HBase - [mail # user]
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...By mistake email was sent ;). To be more specific, here is example of my schema table bsn.main: key: long family: names type:date:version => json object fa...
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Author: Andrey Stepachev,
2010-07-15, 08:44
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Is it safe to use timestamps (or versions) to load old values. - HBase - [mail # user]
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...Hi all, I use automatic unconditional data load from other sources into my database. But data, already loaded, can be changed by users (or updated by MR jobs, f.e. some foreign keys re...
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Author: Andrey Stepachev,
2010-07-15, 08:41
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Re: descending keys - HBase - [mail # user]
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...and even better use "string sortable long" (code taken from SOLR) (for reverse order don't forget to subtrcact value from Long.MAX as in message before) // uses binary represen...
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Author: Andrey Stepachev,
2010-06-25, 19:03
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