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HADOOP-15827. NPE in DynamoDBMetadataStore.lambda$listChildren for root + auth S3Guard.

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Contributed by Gabor Bota
This commit is contained in:
Steve Loughran 2018-10-09 10:46:41 +01:00
parent d4626b4d18
commit 7ba1cfdea7
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hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/s3guard/DynamoDBMetadataStore.java
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@ -630,7 +630,7 @@ public DirListingMetadata listChildren(final Path path) throws IOException {
LOG.trace("Listing table {} in region {} for {} returning {}", LOG.trace("Listing table {} in region {} for {} returning {}",
tableName, region, path, metas); tableName, region, path, metas);
return (metas.isEmpty() && dirPathMeta == null) return (metas.isEmpty() || dirPathMeta == null)
? null ? null
: new DirListingMetadata(path, metas, isAuthoritative, : new DirListingMetadata(path, metas, isAuthoritative,
dirPathMeta.getLastUpdated()); dirPathMeta.getLastUpdated());