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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SAMOA-58) Samoa AvroFileStream from HDFSFileStreamSource stops at end of first file
Date Sun, 03 Apr 2016 07:46:25 GMT

    [ https://issues.apache.org/jira/browse/SAMOA-58?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15223157#comment-15223157
] 

ASF GitHub Bot commented on SAMOA-58:
-------------------------------------

Github user gdfm commented on a diff in the pull request:

    https://github.com/apache/incubator-samoa/pull/48#discussion_r58305863
  
    --- Diff: samoa-api/src/main/java/org/apache/samoa/streams/FileStream.java ---
    @@ -52,9 +49,18 @@
           's', "Source Type (HDFS, local FS)", FileStreamSource.class,
           "LocalFileStreamSource");
     
    +  public IntOption classIndexOption = new IntOption("classIndex", 'c',
    +          "Class index of data. 0 for none or -1 for last attribute in file.", -1, -1,
Integer.MAX_VALUE);
    +
    +  private FloatOption floatOption = new FloatOption("classWeight", 'w', "", 1.0);
    --- End diff --
    
    Would instance weights work in this case?
    Could you summarize the difference between class weights and instance weights?


> Samoa AvroFileStream from HDFSFileStreamSource stops at end of first file
> -------------------------------------------------------------------------
>
>                 Key: SAMOA-58
>                 URL: https://issues.apache.org/jira/browse/SAMOA-58
>             Project: SAMOA
>          Issue Type: Bug
>          Components: SAMOA-Instances
>         Environment: RHEL 6.6, java 1.8.0_72
>            Reporter: Edi Bice
>            Assignee: Gianmarco De Francisci Morales
>
> It appears Samoa is capable of streaming a collection of files as a single stream effectively
concatenating the files. However using Samoa AvroFileStream from HDFSFileStreamSource seems
the stream stops at end of first file:
> bin/samoa local target/SAMOA-Local-0.4.0-incubating-SNAPSHOT.jar "PrequentialEvaluation
-i -1 -l (classifiers.ensemble.Bagging -s 100) -s (AvroFileStream -s HDFSFileStreamSource
-f /tmp/order_and_feats_flat_avro/2016_02_18/ -c 1 -e binary) -f 10000"
> 2016-02-18 20:43:20,991 [main] INFO  org.apache.samoa.evaluation.EvaluatorProcessor (EvaluatorProcessor.java:183)
- last event is received!
> 2016-02-18 20:43:20,991 [main] INFO  org.apache.samoa.evaluation.EvaluatorProcessor (EvaluatorProcessor.java:184)
- total count: 262144
> ...
> 2016-02-18 20:43:20,993 [main] INFO  org.apache.samoa.evaluation.EvaluatorProcessor (EvaluatorProcessor.java:191)
- total evaluation time: 34 seconds for 262144 instances
> bash-4.1$ hadoop fs -ls /tmp/order_and_feats_flat_avro/2016_02_18 | more
> Found 70 items
> -rw-r--r--   3 yarn hdfs  230855335 2016-02-18 16:01 /tmp/order_and_feats_flat_avro/2016_02_18/hdfs-1a238673-c4ec-4462-be67-78d573efa790-00001
> -rw-r--r--   3 yarn hdfs  229800273 2016-02-18 16:04 /tmp/order_and_feats_flat_avro/2016_02_18/hdfs-1a238673-c4ec-4462-be67-78d573efa790-00002
> ...



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