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CombineFn not run as Combiner - Crunch - [mail # user]
...I've observed that if an MR job with a combine fn is executed and that jobalso has a map phase output, the combine fn will not run as a Combiner.Removing the map side output will cause the c...
   Author: Stephen Patel , 2018-05-31, 20:18
[CRUNCH-639] Writable Bytes does an unnecessary copy - Crunch - [issue]
...In the Writable.bytes() Output MapFn, an unnecessary (I believe) copy of the incoming ByteBuffer occurs[0].Current:BytesWritable bw = new BytesWritable();bw.set(input.array(), input....
http://issues.apache.org/jira/browse/CRUNCH-639    Author: Stephen Patel , 2017-03-17, 12:03
[CRUNCH-525] The ExtractKeyFn is has an incorrect scale factor - Crunch - [issue]
...The ExtractKeyFn[0] used by the by[1] method of the PCollectionImpl is using the default scale factor for a MapFn (1.0).  It should be using 1.0 + the scale factor of th...
http://issues.apache.org/jira/browse/CRUNCH-525    Author: Stephen Patel , 2015-08-06, 04:39