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Identification of mapper slots - MapReduce - [mail # user]
...In Hadoop under the mapred-site.conf  I can set the maximum number of mappers. For the sake of this email I will call the number of concurrent mappers: mapper slots.  Is it possibl...
   Author: Hider, Sandy, 2013-10-14, 21:49
Atomicity across multiple tables - Accumulo - [mail # user]
...Hi All, I want to double check my facts.  I recall that Accumulo can guarantee the atomicity within a single row.  If a MultiTableBatchWriter creates mutations for two rows, one ro...
   Author: Hider, Sandy, 2013-09-24, 20:37
Table Overlap errors - Accumulo - [mail # user]
...All, I am seeing the following errors on in the Accumulo logs:  ERROR, Tablet 18h<< overlaps previously assigned [] [] [18h;03<, 18h<;03]  ERROR, Tablet 18z<< ove...
   Author: Hider, Sandy, 2013-07-12, 14:50
Minor compaction occurring often with fairly long delays during ingest. - Accumulo - [mail # user]
...I recently setup Accumulo 1.4.2 on a rack of boxes that each has 24 processors and 43 GB of RAM.  I set them up using the 3GB example templates but then increased the max size of the Ts...
   Author: Hider, Sandy, 2013-06-25, 23:06
% of Used DFS - Accumulo - [mail # user]
...We have a small cloud running the Cloudbase 1.3.5.  On the Overview Web Page in Cloudbase Master section is  a property "% of Used DFS"  and it is at 97.88%.   Looking at...
   Author: Hider, Sandy, 2013-03-12, 22:05
512MB Conf Examples - Accumulo - [mail # user]
...Accumulo ships with configuration files for 512MB.  Does that mean a system with 512MB of RAM could be made to run Accumulo, including (Hadoop and Zookeeper)  or is this example as...
   Author: Hider, Sandy, 2013-02-21, 20:12
upgrading to CDH3u5 - Accumulo - [mail # user]
...I am curious if anyone has upgraded their Accumulo clouds Hadoop version from 0.20.2  to CDH3  which is based off of a version of 0.20.2.  Can you just replace one version wit...
   Author: Hider, Sandy, 2013-02-07, 16:42
[expand - 2 more] - RE: Thrift error while configuring new cloud - Accumulo - [mail # user]
...Thanks Eric and John for the replies.  In case anyone else runs into this problem.  On the slave nodes, in the accumulo log dir, in file tserver_.out it stated.  The stack siz...
   Author: Hider, Sandy, 2013-01-16, 21:43
Writes and Loggers - Accumulo - [mail # user]
...Hi all, I want to verify some of the details with Accumulo Writes and Loggers.   How does the client find the correct tablet server to write to?  Does the client query the master o...
   Author: Hider, Sandy, 2012-10-10, 19:47
Software used for benchmarking a cloud - Accumulo - [mail # user]
...All, I am wondering what others have found to help perform benchmarks of a cloud?  Have others found any open source software for this or rolled their own?  Thanks in advance, &nbs...
   Author: Hider, Sandy, 2012-06-04, 16:57
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