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From "Ben Hoyt (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CAMEL-4555) Support nested directories with multiple segment files in the HDFS endpoint consumer
Date Mon, 17 Oct 2011 18:51:12 GMT
Support nested directories with multiple segment files in the HDFS endpoint consumer
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                 Key: CAMEL-4555
                 URL: https://issues.apache.org/jira/browse/CAMEL-4555
             Project: Camel
          Issue Type: Improvement
          Components: camel-hdfs
    Affects Versions: 2.8.1
            Reporter: Ben Hoyt


A common pattern in HDFS is for multiple segment files underneath a given directory, representing
the fragments of data.  Lots of tools understand to automatically merge these segment files
(ie hadoop fs -getmerge, pig script loaders).  This patch does the same for the HDFS consumer,
using a temporary local directory for the merging.

Additionally, tools like pig and oozie understand to look for a _SUCCESS file in one of these
directories containing segments.  This file indicates that the segments have been completely
written.  This patch additionally skips the directory if a _SUCCESS file is not present.

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