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Re: Quick question re UnknownHostException - Accumulo - [mail # user]
...Josef,If these are intermittent failures, you might consider turning on thewatcher [1] to automatically restart your processes. This should keep yourcluster from atrophying over time. You'll...
   Author: Adam Fuchs, 2015-11-13, 14:56
[ACCUMULO-4049] create a generic counting iterator - Accumulo - [issue]
...As a user I want to be able to count the number of key/values, rows, row+column family, etc. exist in a range. This could be done via a simple iterator like the CountingIterator added at sca...
http://issues.apache.org/jira/browse/ACCUMULO-4049    Author: Adam Fuchs, 2015-11-10, 08:08
Re: total table rows - Accumulo - [mail # dev]
...+1 on a standard counting iterator. I have written this for tests way toomany times. :)ACCUMULO-4049.AdamOn Mon, Nov 9, 2015 at 10:52 AM, Josh Elser  wrote: ...
   Author: Adam Fuchs, 2015-11-09, 17:27
[expand - 6 more] - Re: [DISCUSS] What to do about encryption at rest? - Accumulo - [mail # dev]
...On Mon, Nov 2, 2015 at 12:27 PM, William Slacum  wrote:Glad somebody got it! :)theperspective.From my perspective it's working fine and hasn't needed attention. We do alot of bulk loadi...
   Author: Adam Fuchs, 2015-11-03, 00:34
Re: pre-sorting row keys vs not pre-sorting row keys - Accumulo - [mail # user]
...I bet what you're seeing is more efficient batching in the latter case.BatchWriter goes through a binning phase whenever it fills up half of itsbuffer, binning everything in the buffer into ...
   Author: Adam Fuchs, 2015-10-29, 23:36
Re: Is there a sensible way to do this? Sequential Batch Scanner - Accumulo - [mail # user]
...Rob,I would use something like an IteratorChain [1] and fead itScanner.iterator() objects. If you setReadaheadThreshold(0) on the scannerthen calling Scanner.iterator() is a fairly lightweig...
   Author: Adam Fuchs, 2015-10-28, 20:48
[ACCUMULO-4039] try out a proactor design pattern for tserver services - Accumulo - [issue]
...For large instances (i.e. lots of clients for a given tserver) we create oodles of threads on the tserver. This makes for difficulty in predicting performance, memory usage, etc. Moreover, w...
http://issues.apache.org/jira/browse/ACCUMULO-4039    Author: Adam Fuchs, 2015-10-28, 14:55
[ACCUMULO-4037] avoid a key copy in TimeSettingIterator - Accumulo - [issue]
...In org.apache.accumulo.core.iterators.system.TimeSettingIterator we make a copy of the key before setting the time. Seems like this is a completely superfluous copy, and we should avoid it. ...
http://issues.apache.org/jira/browse/ACCUMULO-4037    Author: Adam Fuchs, 2015-10-25, 01:15
[ACCUMULO-4036] remove verbose block cache eviction logging - Accumulo - [issue]
...For many scans and queries we get logs like the following at pretty extreme frequencies:2015-10-20 17:33:50,458 [cache.LruBlockCache] [LruBlockCache.EvictionThread] DEBUG: Block cache LRU ev...
http://issues.apache.org/jira/browse/ACCUMULO-4036    Author: Adam Fuchs, 2015-10-22, 14:34
Re: Why the Range not find the data - Accumulo - [mail # user]
...Try using the Range.exact(...) and Range.prefix(...) helper methods togenerate specific ranges. Key.followingKey(...) might also be helpful.Cheers,AdamOn Wed, Oct 14, 2015 at 9:59 AM, Lu Qin...
   Author: Adam Fuchs, 2015-10-14, 18:44
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elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB