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Re: Remotely Accumulo - Accumulo - [mail # user]
...Accumulo tservers typically listen on a single interface. If you have aserver with multiple interfaces (e.g. loopback and eth0), you might have aproblem in which the tablet servers are not l...
   Author: Adam Fuchs, 2014-10-07, 02:26
Re: Determining tablets assigned to table splits, and the number of rows in each tablet - Accumulo - [mail # user]
...A few years ago we hashed out a rough idea of creating a stats APIthat would allow users to ask a variety of questions that leverageinformation that is already present in the system. Those q...
   Author: Adam Fuchs, 2014-10-06, 14:31
Re: Accumulo Powered By Logo - Accumulo - [mail # dev]
...I like the one with just the 'a', but I think we could make ~50% bigger.AdamOn Thu, Oct 2, 2014 at 3:58 PM, Billie Rinaldi  wrote: ...
   Author: Adam Fuchs, 2014-10-02, 20:02
[expand - 1 more] - Re: Compaction slowing queries - Accumulo - [mail # user]
...You can change compression codecs at any time on a per-table basis. Thisonly affects how new files are written. Existing files will still be readthe same way. See the table.file.compress.typ...
   Author: Adam Fuchs, 2014-09-11, 17:25
[ACCUMULO-3079] improve system iterator performance by collapsing call stack - Accumulo - [issue]
...System iterators are at the core of the tightest loops in Accumulo, handling every key/value pair that traverses through a scan or a compaction. In many cases, iterators are the current perf...
http://issues.apache.org/jira/browse/ACCUMULO-3079    Author: Adam Fuchs, 2014-09-02, 20:58
[ACCUMULO-3088] StatsIterator readCounter could be more accurate - Accumulo - [issue]
...When testing seek performance I noticed that the read count displayed on Accumulo's monitor page registered zero entries read per second and a positive number of entries per second returned....
http://issues.apache.org/jira/browse/ACCUMULO-3088    Author: Adam Fuchs, 2014-08-28, 15:19
[ACCUMULO-3067] scan performance degrades after compaction - Accumulo - [issue]
...I've been running some scan performance tests on 1.6.0, and I'm running into an interesting situation in which query performance starts at a certain level and then degrades by ~15% after an ...
http://issues.apache.org/jira/browse/ACCUMULO-3067    Author: Adam Fuchs, 2014-08-21, 20:51
Re: Column size limit - Accumulo - [mail # dev]
...Joe,I would say that a rule of thumb would be tens of megabytes for a singlecell. There are two limits that affect this:1) Amount of memory used: This includes ingesting into the batchwriter...
   Author: Adam Fuchs, 2014-08-18, 17:06
[ACCUMULO-599] investigate permgen collection and class unloading with concurrent mark and sweep garbage collector - Accumulo - [issue]
...The Java concurrent mark and sweep garbage collector appears to default to not unloading classes or sweeping the permgen storage space. Accumulo reloads classes dynamically, potentially cont...
http://issues.apache.org/jira/browse/ACCUMULO-599    Author: Adam Fuchs, 2014-08-06, 21:21
[ACCUMULO-1421] use reflection to improve compatibility between Hadoop 1 and 2 - Accumulo - [issue]
...JobContext switches between an abstract class and an interface in hadoop 1 and 2, causing runtime compatibility problems in the compiled Accumulo bytecode. Avoid the runtime problem by using...
http://issues.apache.org/jira/browse/ACCUMULO-1421    Author: Adam Fuchs, 2014-07-24, 18:19
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NEW: Monitor These Apps!
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