Github user zentol commented on a diff in the pull request: https://github.com/apache/flink/pull/970#discussion_r36512933 --- Diff: flink-core/src/main/java/org/apache/flink/api/common/operators/CollectionExecutor.java --- @@ -501,4 +536,22 @@ public int getSuperstepNumber() { return (T) previousAggregates.get(name); } } + + private static final class DoingNothing implements Callable<Path>{ + private Path entry; + + public DoingNothing(Path entry){ + this.entry = entry; + } + + @Override + public Path call() throws IOException{ + try{ + LocalFileSystem fs = (LocalFileSystem) entry.getFileSystem(); + return entry.isAbsolute() ? new Path(entry.toUri().getPath()): new Path(fs.getWorkingDirectory(),entry); + } catch (ClassCastException e){ + throw new RuntimeException("Collection execution must have only local file paths"); --- End diff -- dislike this error message, there's is no apparent relation to the distributed cache. how about "The DistrbutedCache only supports local files for Collection Environments."
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