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Re: feature request (count) - HBase - [mail # user]
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..."Each HFile knows how many KV entries there are in it, but this does not map in a general way to the number of rows, or the number of rows with a specific column." It would be nice to ...
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Author: Jack Levin,
2011-06-03, 22:40
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feature request (count) - HBase - [mail # user]
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...I have a feature request: There should be a native function called 'count', that produces count of rows based on specific family filter, that is internal to HBASE and won't be required...
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Author: Jack Levin,
2011-06-03, 22:20
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Re: mslab enabled jvm crash - HBase - [mail # user]
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...It might sound crazy, but if you have plenty of CPU, consider lowering your NewSize to like 30MB, if you do that your ParNews will be more frequent, but hitting CMS failure will be less like...
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Author: Jack Levin,
2011-05-26, 18:02
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Re: mslab enabled jvm crash - HBase - [mail # user]
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...Wayne, we get CMS failures also, I am pretty sure they are fragmentation related: 2011-05-26T09:20:00.304-0700: 206371.599: [GC 206371.599: [ParNew (promotion failed): 76633K->76023...
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Author: Jack Levin,
2011-05-26, 17:51
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Re: mslab enabled jvm crash - HBase - [mail # user]
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...Wayne, I think you are hitting fragmentation, how often do you flush? Can you share memstore flush graphs? Here is ours: http://img851.yfrog.com/img851/9814/screenshot20110526at1...
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Author: Jack Levin,
2011-05-26, 07:43
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Re: 0.90.3 - HBase - [mail # user]
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...like 19:09:23 208.94.1.52 jack@zero:~ $ host 38.99.76.204 204.76.99.38.in-addr.arpa domain name pointer img646.imageshack.us. 19:10:26 208.94.1.52 jack@zero:~ $ This is the name ...
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Author: Jack Levin,
2011-05-25, 02:11
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Re: 0.90.3 - HBase - [mail # user]
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..."HBase uses the local hostname to self-report it's IP address." using 'hostname' as authoritative name for regionserver is what caused all of the confusion, hostname usually not govern...
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Author: Jack Levin,
2011-05-25, 02:03
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Re: 0.90.3 - HBase - [mail # user]
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...Then I recommend scratching hostname use in leu of reverse lookup only -Jack On May 24, 2011, at 5:45 PM, Andrew Purtell wrote: esult was much worse) prior to establ...
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Author: Jack Levin,
2011-05-25, 01:01
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Re: 0.90.3 - HBase - [mail # user]
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...figured it out... the /etc/hosts file has ip to name, was used by zookeeper was *.prod.imageshack.com, while hostname was imgXX.imageshack.us... use by Regionserver/Master - Ideally, a...
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Author: Jack Levin,
2011-05-24, 23:37
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Re: 0.90.3 - HBase - [mail # user]
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...img645.prod.imageshack.us and img645.imageshack.us are both point to the same IP. -Jack On Tue, May 24, 2011 at 3:50 PM, Jack Levin wrote: it, so for /rs /rs ll...
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Author: Jack Levin,
2011-05-24, 23:04
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