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Re: What happens when you add new HBase nodes to a cluster? - HBase - [mail # user]
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...Yes, the if the balancer is enabled (balance_switch true), hbase will automatically balance the tables across the new pool of region servers. At this point your locality will be shot f...
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Author: Bryan Beaudreault,
2013-05-15, 18:36
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Re: HBase cluster over multiple EC2 Availability Zones? - HBase - [mail # user]
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...Yep, talking about HDFS replication. On Mon, May 6, 2013 at 5:55 PM, Otis Gospodnetic <[EMAIL PROTECTED] ...
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Author: Bryan Beaudreault,
2013-05-06, 21:59
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Re: HBase cluster over multiple EC2 Availability Zones? - HBase - [mail # user]
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...We run multiple HBase clusters of various sizes, each is spread over 4 AZs. Yes, there is a definite write latency added due to replication, and yes there is a transfer cost that is no...
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Author: Bryan Beaudreault,
2013-05-06, 21:44
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Re: hbase increments and hadoop attempts - HBase - [mail # user]
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...Increments are not idempotent, so yes you will double increment the set of increments that succeeded in the first attempt(s). If you care about that you're better off not using the Inc...
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Author: Bryan Beaudreault,
2013-03-25, 14:22
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[HBASE-8157] Allow better control over lease timeouts on a per-scan basis - HBase - [issue]
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...Changing the global scanner lease timeout is a heavy-handed solution for long scans on a cluster that may be used by a variety of applications. Two additions would make this easier to ...
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http://issues.apache.org/jira/browse/HBASE-8157
Author: Bryan Beaudreault,
2013-03-21, 06:16
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Re: Scanner timeout -- any reason not to raise? - HBase - [mail # user]
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...Thanks Ted, I've submitted https://issues.apache.org/jira/browse/HBASE-8157. On Wed, Mar 20, 2013 at 1:56 PM, Ted Yu wrote: ...
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Author: Bryan Beaudreault,
2013-03-20, 19:13
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Re: Scanner timeout -- any reason not to raise? - HBase - [mail # user]
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...I was thinking something like this: Scan scan = new Scan(startRow, endRow); scan.setCaching(someVal); // based on what we expect most rows to take for processing time Resu...
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Author: Bryan Beaudreault,
2013-03-20, 17:39
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Re: Scanner timeout -- any reason not to raise? - HBase - [mail # user]
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...Typically it is better to use caching and batch size to limit the number of rows returned and thus the amount of processing required between calls to next() during a scan, but it would be ni...
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Author: Bryan Beaudreault,
2013-03-20, 17:05
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Re: Odd WARN in hbase 0.94.2 - HBase - [mail # user]
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...I'll add that this did fix my issue. The dn.50010 proc file is now in place and I have not see any other exceptions. Thanks guys! On Wed, Mar 6, 2013 at 10:45 PM, Anoop Sa...
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Author: Bryan Beaudreault,
2013-03-07, 03:56
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Re: Odd WARN in hbase 0.94.2 - HBase - [mail # user]
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...Great, thanks for the help Kevin. He's correct that we only have dfs.client.read.shortcircuit set in our hbase-site.xml, and we don't have dfs.domain.socket.path set anywhere. I'...
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Author: Bryan Beaudreault,
2013-03-06, 21:04
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