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Re: peformance - Accumulo - [mail # dev]
...Hey Drew,  This could be a very broad question, so I'll give a partial answer and encourage you to come back for more details.  Impala is a mechanism that sits on top of HBase or H...
   Author: Adam Fuchs, 2013-05-03, 18:20
Re: Iterators returning keys out of scan range - Accumulo - [mail # user]
...Mr. VonCloud,  I suspect you're going for something like eureka synchronization. I suppose that might work, but I wouldn't rely on that behavior persisting long-term. It's definitely in...
   Author: Adam Fuchs, 2013-05-02, 00:36
Re: asciidoc manual - Accumulo - [mail # dev]
...This looks good to me. Out of curiosity, what made you decide to use asciidoc rather than the multitude of other options? Cross-platform support looks good (support for Windows, Mac, and Lin...
   Author: Adam Fuchs, 2013-05-01, 21:18
Re: Accumulo software and processes owner - Accumulo - [mail # user]
...Terry,  To properly secure you Accumulo install it's important that the shared secret in the Accumulo configs only be shared with the Accumulo processes, so I would recommend using a se...
   Author: Adam Fuchs, 2013-04-26, 20:53
[ACCUMULO-794] FirstEntryInRowIterator can scan through entire last row in range - Accumulo - [issue]
...If the range passed to the FirstEntryInRowIterator is seeked with a Range that has an end key, the FirstEntryInRowIterator will scan through all of the entries in the last row that match the...
http://issues.apache.org/jira/browse/ACCUMULO-794    Author: Adam Fuchs, 2013-04-16, 22:24
Re: multi-table isolated batch scanner - Accumulo - [mail # dev]
...Keith,  I'm essentially performing a local sort-merge inner join (local meaning within one tablet at a time). This is similar to what the intersecting iterator does, but I'm doing it on...
   Author: Adam Fuchs, 2013-04-16, 16:33
[ACCUMULO-954] ZooLock watcher can stop watching - Accumulo - [issue]
...Basically, this will result in tablet servers failing to recognize when they lose their locks. I think the worst that can happen with this is a tablet server can fail to die after it loses i...
http://issues.apache.org/jira/browse/ACCUMULO-954    Author: Adam Fuchs, 2013-03-04, 20:13
Re: Determining the cause of a tablet server failure - Accumulo - [mail # user]
...So, question for the community: inside bin/accumulo we have:   -XX:OnOutOfMemoryError="kill -9 %p" Should this also append a log message? Something like:   -XX:OnOutOfMemoryError="...
   Author: Adam Fuchs, 2013-02-27, 20:27
Re: Suggestions on modeling a composite row key - Accumulo - [mail # user]
...At sqrrl, we tend to use a Tuple class that implements List (List would also work), and has conversions to and from ByteBuffer. To encode the tuple into a byte buffer, change all the "\1"s t...
   Author: Adam Fuchs, 2013-02-27, 15:44
[ACCUMULO-519] support in-memory compactions - Accumulo - [issue]
...There are several factors that influence how big to make the in-memory write buffer (tserver.memory.maps.max) for Accumulo. Two dominant factors that conflict with each other are: Overall di...
http://issues.apache.org/jira/browse/ACCUMULO-519    Author: Adam Fuchs, 2013-02-13, 19:52
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