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regions stuck in transition - HBase - [mail # user]
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...Hello, We've recently had a problem where regions will get stuck in transition for a long period of time. In fact, they don't ever appear to get out-of-transition unless we take ...
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Author: Bryan Beaudreault,
2012-04-16, 15:21
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Re: Cascading failure leads to loss of all region servers - HBase - [mail # user]
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...Hi Stack, Thanks for the reply. Unfortunately, our first instinct was to restart the region servers and when they came up it appears the compaction was able to succeed (perhaps b...
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Author: Bryan Beaudreault,
2012-04-12, 01:17
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Cascading failure leads to loss of all region servers - HBase - [mail # user]
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...We have 16 m1.xlarge ec2 machines as region servers, running cdh3u2, hosting about 17k regions. Each region server has 10GB of heap, and in normal operating levels I have never seen ou...
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Author: Bryan Beaudreault,
2012-04-11, 17:24
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Re: NotServingRegionException during memstore flush - HBase - [mail # user]
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...By tailing the HMaster logs while our attempted flush was being run, I noticed that the region it fails to get is actually referenced as being deleted shortly after a split is received: &nbs...
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Author: Bryan Beaudreault,
2012-04-07, 07:06
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NotServingRegionException during memstore flush - HBase - [mail # user]
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...Hello all, I have a job that does heavy writing into HBase. The most recent run was 94 million records, each being put to two tables: one table stores a KeyValue per record, whil...
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Author: Bryan Beaudreault,
2012-04-07, 05:18
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Re: Search by name - HBase - [mail # user]
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...You could use a prefix on the rowkey. I imagine there are multiple different field types, so just have an enum or something that enumerates the different field types you have, such as ...
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Author: Bryan Beaudreault,
2012-04-02, 21:04
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Re: Search by name - HBase - [mail # user]
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...I imagine you don't want this search to have to scan the entire patients table to find someone by their name, assuming there could be many many patients. It may be a better idea to cre...
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Author: Bryan Beaudreault,
2012-04-02, 20:46
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Re: Dealing with large data sets in client - HBase - [mail # user]
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...Thanks Stack, that's correct. It is kind of hard to describe, though I guess it's easiest to think of it as a 2d array where the 2nd dimension is sorted. I think your idea would ...
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Author: Bryan Beaudreault,
2012-03-28, 17:47
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Dealing with large data sets in client - HBase - [mail # user]
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...Hello, I have timeseries data, most rows have anywhere from 10 to a few thousand columns, but outliers can have a million or more. Each column has some integer value (counters), ...
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Author: Bryan Beaudreault,
2012-03-27, 21:36
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Re: HBase Region move() and Data Locality - HBase - [mail # user]
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...Thanks for the response! We are currently migrating analytics data from an old mysql setup to a new hbase-backed architecture. We have a bunch of versions of the data running at ...
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Author: Bryan Beaudreault,
2012-03-05, 18:45
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