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Re: asynchronous hbase for batch inserts? - HBase - [mail # user]
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...On Fri, Feb 4, 2011 at 4:43 AM, Shuja Rehman wrote: The equivalent would be: Callback callback = new Callback { public Object run(Object arg) { // Do w...
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Author: tsuna,
2011-02-05, 09:58
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Re: HBase as a backend for GUI app? - HBase - [mail # user]
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...Just to add on what others said, at StumbleUpon we typically see a 99th percentile lower than 100ms for simple get/put operations. OpenTSDB also uses HBase with an interactive GWT inte...
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Author: tsuna,
2011-02-05, 09:44
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Re: HBase/Zookeeper -- System Fails when IP Address Changes - HBase - [mail # user]
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...On Tue, Feb 1, 2011 at 7:16 AM, grailcattt wrote: In order to avoid this problem, I recommend you follow the steps outlined here: http://opentsdb.net/setup-hbase.html which...
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Author: tsuna,
2011-02-05, 06:33
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Re: write performance degradation - HBase - [mail # dev]
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...On Tue, Feb 1, 2011 at 7:40 AM, Ted Yu wrote: The output of vmstat doesn't show anything useful here, the machine is 100% idle up until the 3rd section where it's reading a bit f...
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Author: tsuna,
2011-02-01, 19:22
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Re: HDFS without Hadoop: Why? - HBase - [mail # user]
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...On Mon, Jan 31, 2011 at 6:34 PM, Sean Bigdatafun wrote: HDFS oading, and cal, tastrophe. at every he "Move rites are e on disk, gating the for a able to If you ...
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Author: tsuna,
2011-02-01, 08:26
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Re: HTable.put(List<Put> puts) perform batch insert? - HBase - [mail # user]
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...On Mon, Jan 31, 2011 at 5:19 PM, Ryan Rawson wrote: htable.getWriteBuffer() isn't thread-safe (correct me if I'm wrong) so be careful with it. FWIW, asynchbase works differ...
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Author: tsuna,
2011-02-01, 08:03
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Re: write performance degradation - HBase - [mail # dev]
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...On Mon, Jan 31, 2011 at 10:25 AM, Ted Yu wrote: This indicates that you're actively bringing in things from swap, which kills performance. The columns "si" (swap in) and "s...
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Author: tsuna,
2011-02-01, 07:54
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Re: write performance degradation - HBase - [mail # dev]
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...It could be useful to see the output of "vmstat 1" (let it run for at least 30 seconds while the problem is occurring and pastebin the result). If the problem seems i/o related, the ou...
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Author: tsuna,
2011-01-31, 06:24
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Re: Row Keys - HBase - [mail # user]
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...On Fri, Jan 28, 2011 at 12:09 PM, Peter Haidinyak wr ote: mended that you use a random key to spread the insert/read load among your region servers. My question is if I am using ...
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Author: tsuna,
2011-01-28, 20:14
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Re: HBase 0.90.0 cannot be put more data after running hours - HBase - [mail # user]
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...On Thu, Jan 27, 2011 at 5:43 PM, Schubert Zhang wrote: OK as long as you make sure each instance is isolated in its own thread, then you're fine, the problem is elsewhere. ...
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Author: tsuna,
2011-01-28, 01:47
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