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From milleruntime <...@git.apache.org>
Subject [GitHub] accumulo pull request #244: Discuss ACCUMULO-3079: collapsing the iterator s...
Date Fri, 07 Apr 2017 17:45:38 GMT
GitHub user milleruntime opened a pull request:

    https://github.com/apache/accumulo/pull/244

    Discuss ACCUMULO-3079: collapsing the iterator stack to improve performance

    Applied the changes from the patch submitted by Adam Fuchs on [ACCUMULO-3079](https://issues.apache.org/jira/browse/ACCUMULO-3079)
to master. This PR is to bring these changes back into discussion.  Created JMH benchmark
tests [here](https://github.com/milleruntime/jmh-test/blob/master/src/main/java/org/sample/MyBenchmark.java).
 I tried to isolate the tests to only the system iterators acting on data in memory.  
    
    I have attached the results from the benchmark tests. 
    [jmh-accumulo-benchmark-results.txt](https://github.com/apache/accumulo/files/906333/jmh-accumulo-benchmark-results.txt)
    
    The JMH tests can be built and run from [here](https://github.com/milleruntime/jmh-test).
After cloning the repo, simply run:
    `mvn clean install`
    `java -jar target/benchmarks.jar -i 100 -f 1`

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/milleruntime/accumulo ACCUMULO-3079-all

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/accumulo/pull/244.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #244
    
----
commit 747bae1c737b9df2bbd3c7a834a536696d9e304a
Author: Mike Miller <mmiller@apache.org>
Date:   2017-03-31T16:43:45Z

    ACCUMULO-3079: collapsed the iterator stack to improve performance

----


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