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Re: Fixing badly distributed table manually. - HBase - [mail # user]
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...Hi, Sorry for not responding: I'm not on the list very often. It seems to be of interest for some of you, so we will publish this script on GitHub, so that everybody can te...
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Author: Vincent Barat,
2013-04-10, 16:31
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Re: HBase scanner LeaseException - HBase - [mail # user]
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...Apparently, my problem seems more related to the one exposed here: http://www.nosql.se/tags/hbase-rpc-timeout/ I don't really understand the reason why next() on our scanners is ...
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Author: Vincent Barat,
2012-11-22, 08:21
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Re: HBase Tuning - HBase - [mail # user]
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...Forget about this: it does not help Le 20/11/12 19:54, Vincent Barat a �crit :...
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Author: Vincent Barat,
2012-11-21, 18:37
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Re: X3 slow down after moving from HBase 0.90.3 to HBase 0.92.1 - HBase - [mail # user]
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...Le 21/11/12 18:39, Stack a �crit : It does not seem to be a load issue : as you say CPU is low and RPC handlers are under used. We got plenty of disk space, and or block cache hit is...
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Author: Vincent Barat,
2012-11-21, 18:35
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Re: X3 slow down after moving from HBase 0.90.3 to HBase 0.92.1 - HBase - [mail # user]
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...Hi, I've checked my 30 RPC handlers, they are all in a WAITING state: Thread 89 (PRI IPC Server handler 6 on 60020): State: WAITING Blocked count: 238 &...
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Author: Vincent Barat,
2012-11-21, 09:04
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Re: X3 slow down after moving from HBase 0.90.3 to HBase 0.92.1 - HBase - [mail # user]
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...Hi, I've checked my 30 RPC handler, they are all in a WAITING state: Here is some extract for one of our RS (this is similar to all of them): requestsPerSecond=593, numberO...
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Author: Vincent Barat,
2012-11-21, 09:02
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Re: X3 slow down after moving from HBase 0.90.3 to HBase 0.92.1 - HBase - [mail # user]
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...Le 21/11/12 06:05, Stack a �crit : We use the new default settings for HBase, just a few changes (more RPC handlers and longer timeout (but this last was a bad idea). yes the cache i...
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Author: Vincent Barat,
2012-11-21, 08:23
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Re: X3 slow down after moving from HBase 0.90.3 to HBase 0.92.1 - HBase - [mail # user]
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...Yes we put and get small amount of data. We already increased handler count to 30, maybe it is not enough... We will try this. Le 21/11/12 05:53, Alok Singh a �crit :...
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Author: Vincent Barat,
2012-11-21, 08:18
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Re: High IPC Latency - HBase - [mail # user]
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...Hi, We face a very similar issue since we upgraded from 0.90.3 to 0.92. I'll test the patch very soon, and I hope to see the RS CPU become the bottleneck as you did... I re...
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Author: Vincent Barat,
2012-11-20, 18:57
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Re: HBase Tuning - HBase - [mail # user]
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...Hi, It seems there is a potential contention in the HBase client code (a useless synchronized method) You may try to use this patch : https://issues.apache.org/jira/browse/...
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Author: Vincent Barat,
2012-11-20, 18:54
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