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Re: Remove the row in MR job? - HBase - [mail # user]
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...Just throwing an idea out there, but if you rotate tables you could probably do what you want.. 1) Table1 is being written throughout the day 2) It's time to kick off the MR job, but b...
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Author: Doug Meil,
2012-10-12, 20:01
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Re: Remove the row in MR job? - HBase - [mail # user]
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...I'm not entirely sure of the use-case, but here are some thoughts on this Š re: "should I take the table from the pool, and simply call the delete method?" Yep, you can con...
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Author: Doug Meil,
2012-10-12, 18:41
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Re: HBase Key Design : Doubt - HBase - [mail # user]
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...Correct. If you do 2 Puts for row key A-B-C-D on different days, the second Put logically replaces the first and the earlier Put becomes a previous version. Unless you specifical...
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Author: Doug Meil,
2012-10-10, 19:32
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Re: Regarding Hbase tuning - Configuration at table level - HBase - [mail # user]
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...Re: JD's suggestion, this and more exciting and useful things can be found in these sections of the Hbase ref guide. http://hbase.apache.org/book.html#perf.reading http://hbase.a...
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Author: Doug Meil,
2012-10-10, 18:27
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Re: key design - HBase - [mail # user]
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...Hi there- Given the fact that the userid is in the lead position of the key in both approaches, I'm not sure that he'd have a region hotspotting problem because the userid should be ab...
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Author: Doug Meil,
2012-10-10, 17:09
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Re: How to select distinct column from a Hbase table - HBase - [mail # user]
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...Here's a Scan example from the Hbase ref guideŠ http://hbase.apache.org/book.html#scan Š but this assumes you are asking about simply getting a distinct column from a table, as o...
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Author: Doug Meil,
2012-10-10, 15:24
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Re: HBase table - distinct values - HBase - [mail # user]
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...Typically this is something done as a MapReduce job. http://hbase.apache.org/book.html#mapreduce.example 7.2.4. HBase MapReduce Summary to HBase Example However, if ...
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Author: Doug Meil,
2012-10-10, 13:25
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Re: HBase client slows down - HBase - [mail # user]
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...So you're running on a single regionserver? On 10/9/12 1:44 PM, "Mohit Anchlia" wrote: 7, =0, 8.79, =45%,...
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Author: Doug Meil,
2012-10-09, 17:50
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Re: HBase client slows down - HBase - [mail # user]
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...It's one of those "it depends" answers. See this firstŠ http://hbase.apache.org/book.html#perf.writing Š Additionally, one thing to understand is where you are writing data...
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Author: Doug Meil,
2012-10-09, 17:32
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Re: Bulk Loads and Updates - HBase - [mail # user]
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...Hi there- re: "All 20 versions will get loaded but the 10 oldest will be deleted during the next major compaction." Yep, that's what is expected to happen. For inform...
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Author: Doug Meil,
2012-10-03, 22:56
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