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https://issues.apache.org/jira/browse/ACCUMULO-931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13544758#comment-13544758
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John Vines commented on ACCUMULO-931:
-------------------------------------
You definately have tablet splitting occuring. A tablet cannot minor compact
more than once at once time, so you shouldn't be seeing multiple minor
compactions unless the table split. Or you're doing other ingest while
benchmarking, which definately could have an impact on your performance.
> Oscillations in Accumulo Ingest Performance
> -------------------------------------------
>
> Key: ACCUMULO-931
> URL: https://issues.apache.org/jira/browse/ACCUMULO-931
> Project: Accumulo
> Issue Type: Bug
> Affects Versions: 1.4.2
> Environment:
> Reporter: Jeremy Kepner
> Attachments: 1ingestor.pdf, 2ingestor.pdf, 3ingestor.pdf,
> 4ingestor.pdf, ingest_performance_explained.pdf
>
>
> Linux 2.6.32, single node, 32 cores, 96 GB RAM, 3x3TB SATA drives, RAID5
> Ingest performance into accumulo varies by 2.5x. Depending upon the number
> of ingestors.
> Performance tests were carried out using Graph500 benchmark (see
> d4m_api/examples/3Scaling/2ParallelDatabase/pDB10_EdgeInsertTEST.m from
> http://www.mit.edu/~kepner/D4M/).
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