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Re: sanity checking application WALogs make sense - Accumulo - [mail # user]
...I'm a bit confused as to what you mean "if an iterator goes down mid-processing." If it goes down at all, then whatever scope it's running in- minor compaction, major compaction and scan- wi...
   Author: William Slacum, 2012-09-15, 13:46
[expand - 1 more] - Re: Iterators and seeking the middle of a row - Accumulo - [mail # user]
...Another thing to keep in mind is that the documentation is actually meant to enforce the notion that, between returning keys, your iterator could be destroyed and reconstituted. If an iterat...
   Author: William Slacum, 2012-09-13, 22:38
[expand - 1 more] - Re: Running Accumulo straight from Memory - Accumulo - [mail # user]
...Woops- slow innurnet and didn't notice Eric's response.  On Tue, Sep 11, 2012 at 9:30 AM, William Slacum  wrote:  ...
   Author: William Slacum, 2012-09-11, 16:30
[ACCUMULO-675] WrappingIterator's seenSeek should be protected - Accumulo - [issue]
...In 1.3, the WrappingIterator was pretty much some boilerplate code. In 1.4 on, a package private boolean called seenSeek was added to help enforce the iterator contract.This causes some issu...
http://issues.apache.org/jira/browse/ACCUMULO-675    Author: William Slacum, 2012-09-07, 02:19
[expand - 1 more] - Re: TimeSpan Iterator - Accumulo - [mail # user]
...It could be inefficient if you can't narrow down your search of a table to specific ranges, via an index or some hint stored in the key that you can use to seek() around. You're left with do...
   Author: William Slacum, 2012-08-28, 17:02
Re: Large files in Accumulo - Accumulo - [mail # user]
...Are these RFiles as a whole? I know at some point HBase needed to have entire rows fit into memory; Accumulo does not have this restriction.  On Thu, Aug 23, 2012 at 12:55 PM, Cardon, T...
   Author: William Slacum, 2012-08-23, 20:06
Re: Custom Iterators - Accumulo - [mail # user]
...An or clause should be able to handle an enumeration of values, as that's supported in a JEXL expression. It would not, however, surprise me if those iterators could not handle multiple rows...
   Author: William Slacum, 2012-08-22, 20:59
Re: METADATA recovery - Accumulo - [mail # user]
...I know in trunk, the ability to run `./bin/accumulo rfile-info -d /accumulo/path/to/rfile`. If that's unavailable, you can run `./bin/accumulo org.apache.accumulo.core.file.rfile.PrintInfo -...
   Author: William Slacum, 2012-08-19, 12:24
Re: Using Accumulo as input to a MapReduce job frequently hangs due to lost Zookeeper connection - Accumulo - [mail # user]
...What does your TServer debug log say? Also, are you writing back out to Accumulo?  To follow up what Jim said, you can check the zookeeper log to see if max connections is being hit. Yo...
   Author: William Slacum, 2012-08-16, 11:24
Re: Accumulo Caching for benchmarking - Accumulo - [mail # user]
...Steve, I'm a little confused. The Rfile block cache is tied to a TServer, so if you kill a node, its cache should go away. Are you querying for the same data after you kill the node that hos...
   Author: William Slacum, 2012-08-04, 00:55
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