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From "Adric Eckstein (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CRUNCH-543) AvroPathPerKeyTarget copy nested subdirectories
Date Thu, 16 Jul 2015 20:08:04 GMT
Adric Eckstein created CRUNCH-543:
-------------------------------------

             Summary: AvroPathPerKeyTarget copy nested subdirectories
                 Key: CRUNCH-543
                 URL: https://issues.apache.org/jira/browse/CRUNCH-543
             Project: Crunch
          Issue Type: Improvement
          Components: IO
            Reporter: Adric Eckstein


When using AvroPathPerKeyTarget to write out a subpath in the output directory using a String
key, the key might indicate multiple subfolders:

Pair<String, String> kv = new Pair<String, String>("foo/bar", "value");
PTable<String, String> kvs = pipeline.create(Arrays.asList(kv),Avros.tableOf(Avros.strings(),
Avros.strings()));
PTables.asPTable(kvs).write(new AvroPathPerKeyTarget("output"));

This throws the error:
java.io.IOException: java.lang.IllegalArgumentException: Reducer output name 'bar' cannot
be parsed
	at org.apache.crunch.impl.mr.exec.CrunchJobHooks$CompletionHook.handleMultiPaths(CrunchJobHooks.java:92)
...

In AvroPathPerKeyTarget the handleOutputs method would need to recursively copy subfolders
(currently only checks first level in output directory) to enable keys that define multiple
sub folders.



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