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https://issues.apache.org/jira/browse/HADOOP-16458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16892077#comment-16892077
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Steve Loughran commented on HADOOP-16458:
-----------------------------------------
happening when the LocatedFileStatusFetcher gets null back from glob; the fact
that the stack from the raised fault isn't propagated is something I plan to
fix too.
{code}
@Override
public Result call() throws Exception {
Result result = new Result();
FileSystem fs = path.getFileSystem(conf);
result.fs = fs;
FileStatus[] matches = fs.globStatus(path, inputFilter);
if (matches == null) { // no matches
result.addError(new IOException("Input path does not exist: " + path));
// so error raised.
} else if (matches.length == 0) {
result.addError(new IOException("Input Pattern " + path
+ " matches 0 files"));
} else {
result.matchedFileStatuses = matches;
}
return result;
}
{code}
FWIW, I'd actually tighten down the exceptions raised to an FNFE and PathIOE if
I wasn't worried about breaking things.
> LocatedFileStatusFetcher.getFileStatuses failing intermittently with s3
> -----------------------------------------------------------------------
>
> Key: HADOOP-16458
> URL: https://issues.apache.org/jira/browse/HADOOP-16458
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.3.0
> Environment: S3 + S3Guard
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Major
>
> Intermittent failure of LocatedFileStatusFetcher.getFileStatuses(), which is
> using globStatus to find files.
> I'd say "turn s3guard on" except this appears to be the case, and the dataset
> being read is
> over 1h old.
> Which means it is harder than I'd like to blame S3 for what would sound like
> an inconsistency
> We're hampered by the number of debug level statements in the globber code
> being approximately none; there's no debugging to turn on. All we know is
> that globFiles returns null without any explanation.
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