[CRUNCH-543] AvroPathPerKeyTarget copy nested subdirectories

• Type: Improvement
• Status: Reopened
• Priority: Major
• Resolution: Unresolved
• Fix Version/s: 0.14.0
• Component/s: IO
• Assignee: Josh Wills
• Reporter: Adric Eckstein
• Created: 16/Jul/15 20:07
• Updated: 13/Feb/17 19:48

Description

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.

Issue Links

• is related to: CRUNCH-635 MultipleOutput Text Targets