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[ACCUMULO-1847] number of compactor threads can increase dynamically but not decrease - Accumulo - [issue]
...This is related to ACCUMULO-401. I can increase the number of threads in the major compaction pool by setting the tserver.compaction.major.concurrent.max variable via the Accumulo shell, but...
http://issues.apache.org/jira/browse/ACCUMULO-1847    Author: Adam Fuchs, 2013-11-02, 16:31
[ACCUMULO-1083] add concurrency to HDFS write-ahead log - Accumulo - [issue]
...When running tablet servers on beefy nodes (lots of disks), the write-ahead log can be a serious bottleneck. Today we ran a continuous ingest test of 1.5-SNAPSHOT on an 8-node (plus a master...
http://issues.apache.org/jira/browse/ACCUMULO-1083    Author: Adam Fuchs, 2013-10-30, 23:16
[ACCUMULO-1777] encryption configuration should not depend on AccumuloConfiguration.getSiteConfiguration() - Accumulo - [issue]
...In order to configure RFile to encrypt, it is necessary to have an accumulo-site.xml on the classpath that holds the encryption parameters. This is less than convenient in the case that we w...
http://issues.apache.org/jira/browse/ACCUMULO-1777    Author: Adam Fuchs, 2013-10-15, 15:27
[ACCUMULO-1755] BatchWriter blocks all addMutation calls while binning mutations - Accumulo - [issue]
...Through code inspection, we found that the BatchWriter bins mutations inside of a synchronized block that covers calls to addMutation. Binning potentially involves lookups of tablet metadata...
http://issues.apache.org/jira/browse/ACCUMULO-1755    Author: Adam Fuchs, 2013-10-07, 21:35
[ACCUMULO-1754] support scale-up behavior in BatchWriter - Accumulo - [issue]
...The o.a.a.client.impl.TabletServerBatchWriter currently limits write threads to one per server. Some people want to use Accumulo on beefy servers where sending one batch at a time is a bottl...
http://issues.apache.org/jira/browse/ACCUMULO-1754    Author: Adam Fuchs, 2013-10-07, 21:28
[ACCUMULO-1753] evaluate options for optimizing a SortedKeyValueIterator-like API on the client side - Accumulo - [issue]
...Currently, there is a significant performance difference between running something like the IntersectingIterator in the TabletServer vs. in the ClientSideIteratorScanner, even on a single no...
http://issues.apache.org/jira/browse/ACCUMULO-1753    Author: Adam Fuchs, 2013-10-07, 15:45
Re: Efficient Tablet Merging [SEC=UNOFFICIAL] - Accumulo - [mail # user]
...Never underestimate the power of ascii art!  Adam On Oct 2, 2013 11:28 PM, "Eric Newton"  wrote:  ...
   Author: Adam Fuchs, 2013-10-03, 12:07
Re: Table entry count confusion - Accumulo - [mail # dev]
...The count that displays in the monitor is the sum of all the key/value pairs that are in the files that back Accumulo. You can also get this count by doing a scan of the !METADATA table and ...
   Author: Adam Fuchs, 2013-10-02, 21:38
Re: Trouble with IntersectingIterator - Accumulo - [mail # user]
...Heath,  In your case, the question that you are effectively asking is "within each partition, which documents' index entries include all of the given terms". Since you have partitions a...
   Author: Adam Fuchs, 2013-10-01, 21:46
Re: My Accumulo 1.5.0 instance has no tablet servers - Accumulo - [mail # user]
...To follow up on this, I think maybe the config should be dfs.datanode.synconclose, not dfs.data.synconclose. Was that a typo, Eric?  Thanks, Adam    On Thu, Sep 12, 2013 at 2:...
   Author: Adam Fuchs, 2013-10-01, 18:48
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