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From "Gabor Bota (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-15827) NPE in DynamoDBMetadataStore.lambda$listChildren for root + auth s3guard
Date Mon, 08 Oct 2018 18:34:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-15827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16642283#comment-16642283
] 

Gabor Bota commented on HADOOP-15827:
-------------------------------------

I'm not really sure if this is happening in the return. Based on your stack [~stevel@apache.org],
https://github.com/apache/hadoop/blob/046b8768af8a07a9e10ce43f538d6ac16e7fa5f3/hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/s3guard/DynamoDBMetadataStore.java#L644
and https://github.com/apache/hadoop/blob/046b8768af8a07a9e10ce43f538d6ac16e7fa5f3/hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/s3guard/DynamoDBMetadataStore.java#L616
lines are mentioned, maybe the issue is in line 644.

> NPE in DynamoDBMetadataStore.lambda$listChildren for root + auth s3guard
> ------------------------------------------------------------------------
>
>                 Key: HADOOP-15827
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15827
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 3.3.0
>            Reporter: Steve Loughran
>            Assignee: Gabor Bota
>            Priority: Blocker
>
> NPE in a test run of {{-Dparallel-tests -DtestsThreadCount=6  -Ds3guard -Ddynamodb -Dauthoritative}}
> {code}
> [ERROR] testLSRootDir(org.apache.hadoop.fs.s3a.ITestS3AFileSystemContract)  Time elapsed:
42.822 s  <<< ERROR!
> java.lang.NullPointerException
> {code}



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