Eugene Kirpichov created BEAM-1309:
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Summary: FileIOChannelFactory.match() traverses entire parent
directory recursively
Key: BEAM-1309
URL: https://issues.apache.org/jira/browse/BEAM-1309
Project: Beam
Issue Type: Bug
Components: sdk-java-core
Reporter: Eugene Kirpichov
Assignee: Pei He
I was running a pipeline that reads a single file from my local home directory.
The pipeline got stuck, and upon taking a stack snapshot, I noticed that it was
stuck in FileIOChannelFactory.match().
The code currently works by traversing the whole parent directory of the
requested filepattern and checking which files match the filepattern. In my
case, that means traversing everything in my home directory, which is *a lot*
(and includes remotely mounted directories).
https://github.com/apache/beam/blob/master/sdks/java/core/src/main/java/org/apache/beam/sdk/util/FileIOChannelFactory.java#L109
This is very wasteful and should be fixed.
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